Metal clad space heaters, PTC self-regulating heaters, and thick film heating elements — purpose-built to deliver controlled heat to specific areas in enclosures, power distribution boards, and industrial equipment from 3V to 240V supply.
3 Technologies
Metal clad, PTC, Thick Film
10+ Models
GBR Series and more
Certifications:
PTC Self-Regulating
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ISO9001
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Thick Film Elements
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TÜV
What Is a Resistive Heater?
A practical overview for engineers and procurement teams evaluating resistive solutions.
A
resistive heater
converts electrical energy directly into heat by passing current through a resistive element. Unlike general-purpose resistors where heat is a byproduct to be managed, resistive heaters are
designed specifically to generate and deliver heat
to a targeted area — making them ideal for preventing condensation, maintaining component operating temperature, and keeping enclosures above the dew point in harsh environments.
RARA offers three distinct heater technologies.
Metal clad
space heaters (RSHT/RSH series) are rugged aluminum-housed units rated 50W to 500W at 110–240V AC — the workhorse solution for cabinet and panel heating.
PTC (Positive Temperature Coefficient) heaters
(YB series) are inherently self-regulating: as temperature rises, resistance increases and power draw automatically drops, providing built-in thermal protection without a thermostat.
The
GBR thick film heater
series
covers a wide range of compact, low-profile heating elements from 1W to 150W across supply voltages of 3V to 240V — suitable for PCB-mounted, chassis-mounted, and heatsink-coupled applications where precise, localized heating is needed in a small footprint.
Heater Technologies
-Metal clad space heaters (RSHT/RSH)
-PTC self-regulating heaters (YB)
-Thick film elements — standard (GBR-601, 612, 619, 666)
-Thick film elements — heatsink mount (GBR-601, 605)
-Low voltage thick film (GBR-603, 618)
Key Advantages
-3V to 240V supply voltage range
-PTC models are self-regulating — no thermostat needed
-Compact thick film elements for tight spaces
-Heatsink-compatible models available
-ISO 9001 & IATF 16949 certified manufacturer
RARA resistive heaters are an ideal solution for inducing heat to specific areas in specialized applications such as power distribution boards, outdoor enclosures, and precision electronics cabinets.
Where RARA resistive heaters are deployed in the field.
Electrical Enclosure & Cabinet Heating
The RSHT/RSH metal clad space heater series (50W–500W, 110–240V) is designed specifically for installation inside electrical switchgear cabinets and control panels — preventing condensation that can cause short circuits and corrosion in outdoor or high-humidity environments.
Anti-Condensation & Dew Point Control
In cold climates or temperature-cycling environments, maintaining enclosure temperature a few degrees above the dew point prevents moisture damage to sensitive electronics. Low-wattage GBR thick film elements (GBR-620, GBR-618) are ideal for continuous low-level anti-condensation heating on 12–240V systems.
Power Distribution Boards
Power distribution boards in substations, wind turbines, and industrial plants use resistive heaters to maintain operating temperature and prevent condensation on bus bars, contactors, and protective relays. The GBR-601 and GBR-666 series are suited to these demanding continuous-duty applications.
Self-Regulating PTC Heating
The YB PTC heater series is inherently fail-safe — it cannot overheat because its resistance rises sharply as temperature increases, automatically limiting power consumption. This makes it ideal for battery warming, pipe heating, and anywhere a thermostat-free, self-regulating solution is preferred.
Industrial Process Heating
Thick film GBR heater elements (GBR-380, GBR-388) operate across a wide voltage range (12–240V) at defined power levels — suitable for precise process heating in food equipment, medical devices, and analytical instruments where stable, repeatable heat output is required.
PCB & Component Warming
Low-voltage GBR-603 (5W–30W, 12–48V) and GBR-618 (5W–20W, 3–24V) elements provide localized warming for temperature-sensitive components, crystal oscillators, and sensors in outdoor or cold-storage electronics where cold-start performance must be maintained.
Select models from our wire wound lineup. Download individual datasheets for full specifications, dimensions, and ordering codes.
Model: RSHT, RSH
Resistor type: Heater
Description: Metal clad space heater
Power Rating: 50W~500W
Supply Voltage (V): 110-240
Tolerance (%): ±10
TCR (ppm/C): 260
Model: YB
Resistor type: Heater
Description: PTC
Power Rating: 3.7W, 220V
Resistance (Ω): 500~2k (@25C)
Tolerance (%): ±10
TCR (ppm/C): 1500
Model: GBR-380
Resistor type: Heater
Description: Thick film elements
Power Rating: 75W, 80W, 85W 230V
Resistance (Ω): 705.3, 661.2, 622.4
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-388
Resistor type: Heater
Description: Thick film elements
Power Rating: 80W, 230V
Resistance (Ω): 161.31, 74.47, 41.33
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-601
Resistor type: Heater
Description: Thick film elements
Power Rating: 10W~150W (heatsink)
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-603
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~30W
Supply Voltage (V): 12-48
Tolerance (%): ±5
TCR (ppm/C): 1500
Model: GBR-605
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~60W (heatsink)
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-612
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~100W
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-618
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~20W
Supply Voltage (V): 3-24
Tolerance (%): ±1
TCR (ppm/C): 100
Model: GBR-619
Resistor type: Heater
Description: Thick film elements
Power Rating: 10W~100W
Supply Voltage (V): 12-230
Tolerance (%): ±10
TCR (ppm/C): 100
Model: GBR-620
Resistor type: Heater
Description: Thick film elements
Power Rating: 1W~2W
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-666
Resistor type: Heater
Description: Thick film elements
Power Rating: 10W~100W
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Why Choose RARA Resistive Heaters
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Three Technologies
Metal clad space heaters, PTC self-regulating elements, and thick film heaters — RARA covers every industrial heating requirement from a single ISO-certified supplier.
02
Wide Voltage Range
From 3V DC low-voltage PCB warmers to 240V AC panel space heaters — the GBR series and RSHT/RSH range cover virtually any supply voltage in industrial or building systems.
03
PTC Self-Regulation
PTC models (YB, GBR-603) are inherently self-limiting — no thermostat or controller required. As temperature rises, power draw automatically decreases, preventing overheating by design.
04
Global Track Record
Deployed by Siemens, Schneider Electric, Rockwell, and Hanwha in industrial panels and power systems across six continents — backed by ISO 9001 and IATF 16949 certification.
