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Product Documentation is available for download in PDF format, which requires Adobe Acrobat Reader to view.
*Calrod® is a trademark of GE
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FE1 - Explosion-Proof Electric Air Unit Heater

The Ruffneck™ FE1 Explosion-Proof Electric Air Heater is designed and manufactured for use in dry indoor industrial applications, such as oil refineries, petrochemical plants, pulp and paper mills, hazardous waste storage facilities and wastewater treatment plants, where specific explosive gases or dusts may be present.
All FE1 heaters feature the VacuCore® liquid-to-air heat exchanger, which provides greater efficiency, faster warm-up and even heat distribution across the face of the exchanger. The entire core can be replaced easily and safely with a new core if required.
Features & Benefits At A Glance
- models range from 2.5-23.1kW and 220-480V
- heater core assembly is contained in a sturdy, epoxy-coated, 14-gauge steel cabinet, which also houses the motor and fan assembly
- adjustable louvers allow directional control of airflow
- aluminum fan blades with steel spider and hub; narrow gap, two-piece fan guard provides safety against all moving parts
- zinc-plated fasteners for corrosion protection
- three long-life, low watt density, high grade metal-sheathed elements
- optional built-in thermostat
- standard metric field connection
- CE/ATEX II2, EEX d IIA & IIB T3 Zones 1 & 2; GOST approved for global markets
CX1 - ProVector® Explosion-Proof Convection Heater

Designed and manufactured specifically for demanding requirements and harsh operating conditions such as those in the oil and gas well drilling industry, the Ruffneck™ CX1 ProVector® Explosion-Proof Convection Heater offers the most reliable, dependable and trouble-free service available for heating hazardous locations.
Features & Benefits At A Glance
- models range from 0.75-7.6kW and 120-600V
- sloped-top cabinet prevents objects that restrict airflow from being set on top
- no exposed copper or brass, limiting corrosion and making the unit suitable for H2S environments
- high-velocity airflow generates heat faster and delivers better heat distribution
- 14-gauge steel cabinet (also available in stainless steel) offers rugged reliability and unsurpassed corrosion resistance; shorter than average cabinet length saves wall and floor space
- optional built-in thermostat reduces field installation costs
- incoloy 840 heating elements offer longer life expectancy
- radial-embossed aluminum plate fins reduce fin warping for better heat transfer performance
- galvanized steel mounting brackets for easy installation and removal
- UL C/US listed approvals for Groups A, B, C, D, IIA, IIB and IIC; IP55 moisture ingress protection available
EFX - Explosion-Proof Exhaust Fan

Specifically designed for both hazardous and general purpose industrial applications, the
Ruffneck™ EFX Explosion-Proof Exhaust Fan is built for safety and durability. A number of optional features are available for customization, including Heresite® coating on all non-motor components, backdraft dampers and rain hoods.
Features & Benefits At A Glance
- models range from 115-440V
- spark-resistant aluminum fan blades for hazardous locations
- epoxy-coated steel construction
- fan guards conform to OSHA specifications
- all motors come complete with electrical junction box
- ships fully assembled for easy installation
- motors are CSA approved and/or UL-listed
FX5 - Explosion-Proof Electric Air Unit Heater

The Ruffneck™ FX5 Explosion-Proof Electric Air Unit Heater is designed for the harshest industrial environments and intended for dry indoor industrial applications such as oil refineries, petrochemical plants, pulp and paper mills, grain elevators, hazardous waste storage facilities, wastewater treatment plants. This heater is ideal anywhere that specific explosive gases or dusts may be present.
Features & Benefits At A Glance
- models range from 3-35kW and 208-600V
- heater core assembly is contained in a sturdy, epoxy-coated, 14-gauge steel cabinet (optional Heresite® coating and stainless steel construction for corrosive environments available), which also houses the motor and fan assembly
- adjustable louvres allow directional control of airflow
- narrow gap, two-piece fan guard provides safety against all moving parts
- automatic reset bimetal high-limit; secondary ambient high-limit for added safety
- UL-certified and approved for the following Hazardous Locations Classifications: Class I, Divisions 1 & 2, Groups C & D; Class II, Divisions 1 & 2, Groups E, F & G; Class I, Zones 1 & 2, Groups IIA & IIB; Temperature code T3B 165°C (329°F)
FX4 - Explosion-Proof Electric Air Unit Heater

Certified for use in hazardous locations, the Ruffneck™ FX4 Explosion-Proof Electric Air Unit Heater is designed for dry indoor industrial environments such as oil refineries, petrochemical plants, pulp and paper mills, grain elevators, hazardous waste storage facilities, wastewater treatment plants and more. This heater is ideal for areas where explosive gases or dusts may be present.
All FX4 heaters utilize the VacuCore® liquid-to-air heat exchanger. The induced vacuum within the sealed core provides greater efficiency, faster warm-up and even heat distribution across the face of the exchanger. The entire core can be removed through the bottom cabinet of the heater and replaced easily and safely with a new core if required.
Features & Benefits At A Glance
- the heater core assembly is contained in a sturdy, epoxy-coated, 14-gauge steel cabinet (optional Heresite® coating for corrosive environments available), which also houses the motor and fan assembly
- adjustable louvres allow directional control of airflow
- narrow gap, two-piece fan guard provides safety against all moving parts
- convenient terminals for room thermostat connection
- automatic reset bimetal high-limit
- high grade metal-sheathed immersion-type heating elements
- available in a range of wattages, from 3 kW to 35 kW
- approved for the following Hazardous Locations Classifications: Class I, Divisions 1 & 2, Groups C & D; Class II, Divisions 1 & 2, Groups E, F & G; Class I, Zones 1 & 2, Groups IIA & IIB; Temperature code T3B 165°C (329°F)
CR1 - Triton™ Corrosion-Resistant Unit Heater

The Ruffneck™ CR1 Triton™ Unit Heater is a corrosion-resistant washdown heater, designed for non-hazardous locations and applications using water pressure of less than 70 psi.
Features & Benefits At A Glance
- models range from 13-39kW and 208-600V
- NEMA Type 4X construction for increased safety and protection against water penetration
- epoxy-coated fan blade and 16-gauge stainless steel cabinet for increased corrosion resistance
- custom configured stainless steel elements for improved heat distribution and corrosion protection
- optional built-in accessories for flexibility and reduced field installation costs
- stainless steel wall/ceiling mounting kit for flexible mounting options, which allow the heater to be mounted to a maximum of 30° from vertical
- stainless steel temperature high-limit for increased safety and reliability
- UL-listed Type 4X for coast guard and marine applications; GOST approved for global markets
CRE1 - Triton™ Corrosion-Resistant Unit Heater (European Certification)

The Ruffneck™ CRE1 Triton™ Unit Heater is a corrosion-resistant washdown heater designed for washdown applications in non-hazardous locations that use water pressure of less than 482 kPa.
Features & Benefits At A Glance
- models range from 2.5-40kW and 220-690V
- IP55 enclosure for increased safety and protection against water penetration
- epoxy-coated fan blade and 16-gauge stainless steel cabinet for increased corrosion resistance
- custom configured stainless steel spiral-finned heating elements for improved heat distribution and corrosion protection
- high velocity airflow
- optional built-in accessories for flexibility and reduced field installation costs
- stainless steel wall/ceiling mounting kit for flexible mounting options, which allow the heater to be mounted to a maximum of 30° from vertical
- stainless steel temperature high-limit for increased safety and reliability
- 120 volt controls for better contactor pull-in reliability
- UL-listed; CE and GOST approved for global markets
RXDF - Explosion-Proof Duct Heater

The Ruffneck™ RXDF Explosion-Proof Duct Heater is designed for heating air or gases in hazardous environments where potentially explosive substances are present, such as oil refineries, coal mines, petrochemical plants and sewage treatment plants. They use heavy walled carbon steel finned tubular (Calrod® Type)* elements with nickel plated finish to provide safe, efficient, low temperature heat transfer.
Features & Benefits At A Glance
- 3 standard sizes range from 2.5-50kW and 208-600V; single or double banked heating modules available
- painted steel duct with mounting holes for attachment to the duct section; approved for mounting in horizontal duct section
- patented x-Max® terminal housing for easy access to wiring terminal connection
- differential pressure switch
- factory-installed high limit sensing thermocouples
- optional features include transition sections, stainless steel duct section, mechanical temperature control, special temperature code, outlet air thermostat and outlet air thermocouple
- available with T2D, T3A or T3B hazardous area temperature codes
- CSA C/US approved; GOST approved for global markets
AH - Advanced Horizontal Unit Heater

Ruffneck™ AH Series Advanced Horizontal Unit Heaters are designed for rugged industrial applications and can be used with a variety of heat transfer fluids such as steam, circulating hot water, and glycol heating systems or in liquid cooling applications, including flash stream condensers, lube oil coolers, pump seal coolers and more. Explosion-proof models suitable for hazardous locations are also available on custom order.
Features & Benefits At A Glance
- models range from 115-440V and 6,000-1,200,000 BTU/hr
- maximum operating pressure of 450 psi; maximum operating temperature of 650°F
- 1.5" NPT male inlet and outlet connections for reduced costs and easy installation; other connections available (check factory for availability)
- extruded aluminum louvers provide two-way directional control of discharge air
- bolt-together cabinet offers easy, convenient maintenance and cleaning without disturbing the mounting arrangement or electrical connections
- optional Heresite® coating available for demanding corrosive environments
- heavy gauge embossed, high performance fan blade for long life and improved air flow
- epoxy powder coated, split fan guard for safety and easy replacement
- UL-listed and/or CSA-approved motors; TEFC or explosion-proof available
- all models are Canadian CRN approved
AV - Advanced Vertical Unit Heater

Ruffneck™ AV Series Advanced Vertical Throw Unit Heaters are designed for rugged industrial applications meeting the most demanding service and long life requirements. While perfect for steam, circulating hot water or glycol heating systems, these heaters are also suitable for a wide range of other heating fluids. In addition, they can be used for both space heating and liquid cooling applications. Explosion-proof models suitable for hazardous locations available on custom order.
Features & Benefits At A Glance
- models range from 115-440V and 6,000-1,200,000 BTU/hr
- maximum operating pressure and temperature rating of 450 psi and 650°F
- epoxy powder coated cabinet and nozzle; optional Heresite® coated or stainless steel cabinet available for demanding corrosive environments
- anodized extruded aluminum louver blades
- UL-listed and/or CSA-approved motors; TEFC or explosion-proof available
- all models are Canadian CRN approved
RGX - Heavy Duty Unit Heater


The Ruffneck™ RGX Heavy Duty Unit Heater is specifically engineered for heavy duty use in industrial environments, such as mine shafts, pulp & paper mills, hoist houses, welding shops, maintenance shops, sewage treatment plants, chemical plants and more. The heavy duty construction of this heater reduces the downtime and maintenance costs associated with standard design heaters.
Features & Benefits At A Glance
- models range from 10-50kW and 208-600V
- 40 and 50 kW units incorporate split loads (50%) for remotely controlled energy management systems
- factory-installed transformers, contactors and thermostats where specified
- individually adjustable air flow louvres
- factory-balanced aluminum fan blade
- NEMA 12 standard, full-sized control panel with hinged removable door
- epoxy coated 14-gauge steel cabinet for superior corrosion-resistance; optional stainless steel available
- fan delay in "ON" and "OFF" cycles
- "Fan Only" terminals for connection to remote switch
- ceiling mounting bracket supplied
- motor mounted outside the element bundle eliminates premature failure due to overheating and provides easy access for motor maintenance
- robust finned tubular sheathed elements with epoxy sealed terminals eliminate contamination from moisture and airborne impurities
- numerous optional factory installed features to meet specific customer requirements; numerous accessories for field installation available
- CSA C/US approved for horizontal and vertical air flow; CE approved; GOST approved for global markets
RGE - Regular Duty Unit Heater

The Ruffneck™ RGE Regular Duty Unit Heater is designed for use in regular duty industrial and commercial space heating applications. This heater is ideal for use in factories, warehouses, parking garages, boiler rooms, arenas, grandstands, mechanical rooms, shopping malls, display areas, commercial storefronts and more. This heater's robust design and top quality construction surpasses the standards of most competitive models.
Features & Benefits At A Glance
- models range from 2-40kW and 208-600V
- phosphate coated, epoxy painted 18-gauge steel cabinet
- field convertible from 1 to 3 phase
- tubular (Calrod® type)* heating elements
- individually adjustable air flow louvres
- permanently lubricated motors
- overheat protection
- ceiling mounting bracket supplied
- motors mounted outside element bundle
- numerous optional factory installed features to meet specific customer requirements, including optional thermostats and controls, and optional wall bracket
- numerous accessories for field installation available
- CSA C/US approved for horizontal air flow; CE approved; GOST approved for global markets
RDFF - Commercial Flanged Duct Heater

The Ruffneck™ RDFF Commercial Flanged Duct Heater with finned tubular (Calrod® type*) elements is designed for use in comfort heating applications, such as make-up air heating, air pre-heating, air handling equipment, fan coils, terminal reheating, multi-zone reheating, heat pump auxiliary systems and return air heating.
The finned tubular elements are constructed using a steel tube with a corrugated steel fin wrapped around it and brazed together, which increases the heat transfer surface of the element resulting in a lower operating temperature than the non-finned tubular element designs.
Features & Benefits At A Glance
- primary linear cutout, 160°F (71°C), 277/600 VAC, 25/10 AMP non-inductive
- secondary linear cutout, manual reset complete with backup magnetic contactor on units under 300V, 30 kW and less, 225°F (107°C), 277/600 VAC, 25/10 AMP non-inductive
- a wide range of optional auxiliary duct heater controls available either as factory installed on the duct heater or as an EEMAC rated control panel for wall mount, including bulb holders, silent contactors, SCR controllers, switches, magnetic contactors and more
- models range from 1-120kW and up to 600V, 3 phase
- frame fabricated from 16-gauge satin-coat steel
- approved for horizontal duct installation where maximum inlet air temperature does not exceed 25°C (77°F) and maximum rating does not exceed 120 kW
- CSA C/US & CE approved; GOST approved for global markets
RDIT - Commercial Insert Duct Heater

The Ruffneck™ RDIT Commercial Insert Duct Heater with non-finned tubular (Calrod® type*) elements is designed for use in comfort heating applications, such as make-up air heating, air pre-heating, air handling equipment, fan coils, terminal reheating, multi-zone reheating, heat pump auxiliary systems and return air heating.
The non-finned incoloy® element design should be chosen where high humidity or slightly corrosive contaminants may be present in the air stream, as this type of element features higher corrosion-resistance than the finned element design. Unlike open coil designs, duct heaters fitted with tubular elements are not subject to hazards of electrical shock, which allows installation closer to a register or grille.
Features & Benefits At A Glance
- primary linear cutout, 160°F (71°C), 277/600 VAC, 25/10 AMP non-inductive
- secondary linear cutout, manual reset complete with backup magnetic contactor on units under 300V, 30 kW and less, 225°F (107°C), 277/600 VAC, 25/10 AMP non-inductive
- a wide range of optional auxiliary duct heater controls available either as factory installed on the duct heater or as an EEMAC rated control panel for wall mount, including bulb holders, silent contactors, SCR controllers, switches, magnetic contactors and more
- available for supply voltages up to 600 V, 3 phase
- frame fabricated from 16-gauge satin-coat steel
- CSA C/US & CE approved; GOST approved for global markets
RDIF - Commercial Insert Duct Heater

The Ruffneck™ RDIF Commercial Insert Duct Heater with finned tubular (Calrod® type*) elements is designed for use in comfort heating applications, such as make-up air heating, air pre-heating, air handling equipment, fan coils, terminal reheating, multi-zone reheating, heat pump auxiliary systems and return air heating.
The finned tubular elements are constructed using a steel tube with a corrugated steel fin wrapped around it and brazed together, which increases the heat transfer surface of the element resulting in a lower operating temperature than the non-finned tubular element designs.
Features & Benefits At A Glance
- primary linear cutout, 160°F (71°C), 277/600 VAC, 25/10 AMP non-inductive
- secondary linear cutout, manual reset complete with backup magnetic contactor on units under 300V, 30 kW and less, 225°F (107°C), 277/600 VAC, 25/10 AMP non-inductive
- a wide range of optional auxiliary duct heater controls available either as factory installed on the duct heater or as an EEMAC rated control panel for wall mount, including bulb holders, silent contactors, SCR controllers, switches, magnetic contactors and more
- model range from 1-120kW and up to 600V, 3 phase
- frame fabricated from 16-gauge satin-coat steel
- approved for horizontal duct installation where maximum inlet air temperature does not exceed 25°C (77°F) and maximum rating does not exceed 120 kW
- CSA C/US & CE approved; GOST approved for global markets
RDFT - Commercial Flanged Duct Heater

The Ruffneck™ RDFT Commercial Flanged Duct Heater with non-finned tubular (Calrod® type*) elements is designed for use in comfort heating applications, such as make-up air heating, air pre-heating, air handling equipment, fan coils, terminal reheating, multi-zone reheating, heat pump auxiliary systems and return air heating.
The non-finned incoloy® element design should be chosen where high humidity or slightly corrosive contaminants may be present in the air stream, as this type of element features higher corrosion-resistance than the finned element design. Unlike open coil designs, duct heaters fitted with tubular elements are not subject to hazards of electrical shock, which allows installation closer to a register or grille.
Features & Benefits At A Glance
- primary linear cutout, 160°F (71°C), 277/600 VAC, 25/10 AMP non-inductive
- secondary linear cutout, manual reset complete with backup magnetic contactor on units under 300V, 30 kW and less, 225°F (107°C), 277/600 VAC, 25/10 AMP non-inductive
- a wide range of optional auxiliary duct heater controls available either as factory installed on the duct heater or as an EEMAC rated control panel for wall mount, including bulb holders, silent contactors, SCR controllers, switches, magnetic contactors and more
- available for supply voltages up to 600 V, 3 phase
- frame fabricated from 16-gauge satin-coat steel
- CSA C/US & CE approved; GOST approved for global markets
BMK - Basic Mounting Kit

The Ruffneck™ Basic Mounting Kit is designed for standard wall or beam mounting of Ruffneck™ unit heaters, specifically the FX4, FX5, FE1, HP, FR and AH models, where the support arm of the mounting kit can be bolted or welded directly to structural steel or concrete.
Features & Benefits At A Glance
- durable steel construction with painted enamel coating
- mounting kits range in weight from 16.5 to 20.3 lbs (7 to 9 kg), depending on which size kit is required for the heater model being mounted
- supports suspended weight of up to 300 lbs (136 kg)
PMK - Pipe Mounting Kit

The Ruffneck™ Pipe Mounting Kit is designed for mounting Ruffneck™ unit heaters, specifically the FX4, FX5, FE1, HP, FR and AH models, to 3" (3 ½" O.D.) pipe. It is particularly useful in buildings with insufficient structural strength to accommodate other types of mounts. Please note that 3" pipe is not supplied with the kit.
Features & Benefits At A Glance
- durable steel construction with painted enamel coating
- mounting kits range in weight from 23.7 to 27.5 lbs (11 to 12 kg), depending on which size kit is required for the heater model being mounted
- supports suspended weight of up to 300 lbs (136 kg)
WMK - Wall Mounting Kit

The Ruffneck™ Wall Mounting Kit is designed for wall mounting of Ruffneck™ unit heaters, specifically the FX4, FX5, FE1, HP, FR and AH models. It is ideal for mounting heaters in areas with substantial wall structures. Z sections provide additional support where required.
Features & Benefits At A Glance
- durable steel construction with painted enamel coating
- mounting kits range in weight from 24.3 to 27.5 lbs (11 to 12 kg), depending on which size kit is required for the heater model being mounted
- supports suspended weight of up to 300 lbs (136 kg)
VHMK - Vertical Hanging Mounting Kit

The Ruffneck™ Vertical Hanging Mounting Kit is designed for simple and economical overhead mounting of the Ruffneck™ AV Advanced Vertical Unit Heater. It is compatible with all sizes of the AV model. Please note that this kit requires 3/8" threaded rod (not supplied).
Features & Benefits At A Glance
- durable steel construction with painted enamel coating
- shipping weight of 4.5 lbs (2 kg)
- supports suspended weight of up to 300 lbs (136 kg)
SHMK - Swivel Hanging Mounting Kit

The Ruffneck™ Swivel Hanging Mounting Kit is designed for simple and economical overhead mounting of Ruffneck™ unit heaters, specifically FX4, FX5, FE1, HP, FR and AH models. The swivel design rotates 360°, allowing for the repositioning of airflow where required. Please note that ½" cut and threaded pipe is required (not supplied).
Features & Benefits At A Glance
- durable steel construction with painted enamel coating
- mounting kits range in weight from 18.2 to 21.4 lbs (8 to 10 kg), depending on which size kit is required for the heater model being mounted
- supports suspended weight of up to 300 lbs (136 kg)
HMK - Hanging Mounting Kit

The Ruffneck™ Hanging Mounting Kit is designed for simple and economical overhead mounting of Ruffneck™ unit heaters, specifically FX4, FX5, FE1, HP, FR and AH models. Please note that ½" cut and threaded pipe is required (not supplied).
Features & Benefits At A Glance
- durable steel construction with painted enamel coating
- shipping weight is 4.5 lbs (2 kg)
- supports suspended weight of up to 300 lbs (136 kg)
XT - Defender® Explosion-Proof Thermostat

Ruffneck™ Defender® heavy-duty explosion-proof thermostats are the smallest, lightest, and most durable thermostats in their class, providing dependable, trouble-free service. They are designed for hazardous location temperature control, such as heating only, cooling only, or ventilation systems in demanding industrial applications, including oil refineries, petrochemical plants, pulp and paper mills, coal mines, grain elevators, hazardous waste storage facilities, and other hazardous locations where specific explosive gases or dusts are present.
Features & Benefits At A Glance
- all-aluminum exterior
- no breakable external plastic parts
- no exposed copper or brass
- corrosion-resistant; suitable for H2S environments
- CFC & mercury free; environmentally safe, no leveling required
- precision die-cast components
- bimetal sensing element
- fast-acting, reliable, unaffected by altitude
- no delicate coils or bellows
- temperature range of 36°F to 82°F (2°C to 28°C)
- 480 VAC maximum
- compact and lightweight
- 3-year warranty; longest trouble-free warranty in the industry
- UL listed and CSA C/US certified; GOST approved for global markets
XTB - Explosion-Proof Thermostat (Remote Sensing)

The Ruffneck™ XTB Explosion-Proof Thermostat is designed for remote sensing and control applications in hazardous locations where explosive substances may be present, such as air, ducts, pipes or tanks. This model uses the patented x-Max® system with the unique track and trolley wiring to provide maximum durability, safety, convenience and ease of use.
Features & Benefits At A Glance
- CSA certified packing gland allows the 57" capillary to exit the x-Max® terminal housing and facilitates remote sensing
- rating to 600V, SPST and DPST
- multiple 3/4" NPT conduit entries
- "O"-rings for moisture protection
- housings and covers made from copper-free extruded aluminum
- universal mounting bracket provided standard for horizontal or vertical mounting
- #14 ga. wire provided for grounding purposes
- ideal for applications where a faster response time is required
- attractive black finish
- certified for Class I, Groups C & D; Class II, Groups E, F & G; and Class III, Divisions 1&2 hazardous locations
XTD8 - Explosion-Proof Thermostat (Room)

The Ruffneck™ XTD8 Explosion-Proof Thermostat is designed for temperature control in room heating or cooling applications, including in hazardous locations where explosive substances may be present.
Features & Benefits At A Glance
- temperature range of 5°C to 25°C (40°F to 80°F)
- feed-thru model (includes explosion-proof plug)
- 3/4" - 14 NPT conduit opening (1/2" conduit adapter included)
- single pole, double throw (heating or cooling applications)
- 22 Amps, 277 VAC Max.
- 3/4 HP @ 125 VAC
- 1 1/2 HP @ 250/277 VAC
- CSA C/US approved and UL-listed for Class I, Division 1 & 2 Groups C & D; Class II, Division 1 & 2 Groups E, F & G; Class III, Division 1 & 2 hazardous locations
XTW - Explosion-Proof Thermostat (Air Sensing)

The Ruffneck™ XTW Explosion-Proof Thermostat is designed for air temperature sensing and control applications in hazardous locations where explosive substances may be present, such as air, ducts, pipes or tanks. This model uses the patented x-Max® system with the unique track and trolley wiring to provide maximum durability, safety, convenience and ease of use.
Features & Benefits At A Glance
- for air sensing applications, a finned stainless steel thermostat well assembly encloses the thermostat bulb
- for liquid sensing applications, an external 1/2" NPT thread on the well assembly provides easy installation into the tank wall
- rating to 600V, SPST and DPST
- multiple 3/4" NPT conduit entries
- "O"-rings for moisture protection
- housings and covers made from copper-free extruded aluminum
- universal mounting bracket provided standard for horizontal or vertical mounting
- #14 ga. wire provided for grounding purposes
- attractive black finish
- certified for Class I, Groups A, B, C & D; Class II, Groups E, F & G; and Class III, Divisions 1&2 hazardous locations
ET5 - Heavy-Duty Line Voltage Thermostat

The Ruffneck™ ET5 Heavy-Duty Line Voltage Thermostat is designed for temperature control in a variety of standard heating or cooling applications.
Features & Benefits At A Glance
- temperature range of 5°C to 25°C (40°F to 80°F)
- single pole, single throw
- 22 Amps, 277 VAC
- 3/4 HP @ 125 VAC
- 1 1/2 HP @ 250/277 VAC
- UL-listed
TF - NEMA 4X Water-Resistant Thermostat

The Ruffneck™ TF115 NEMA 4X Water-Resistant Thermostat features superior corrosion resistance and is designed for temperature control applications where humidity and/or moisture may be present, which makes it ideal for outdoor use.
Features & Benefits At A Glance
- temperature range of 4°C to 30°C (40°F to 90°F)
- single pole, double throw
- 25 Amps, 480 VAC
- full load = 16 Amps @ 120 VAC / 12 Amps @ 240 VAC; lock rotor = 80 Amps @ 120 VAC / 60 Amps @ 240 VAC
- approximate shipping weight of 0.69 lbs (310 grams)
BMK - Basic Mounting Kit - Installation Manuals
HMK - Hanging Mounting Kit - Installation Manuals
WMK - Wall Mounting Kit - Installation Manuals
SHMK - Swivel Hanging Mounting Kit - Installation Manuals
PMK - Pipe Mounting Kit - Installation Manuals
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