This CR027 series PTC fan heater is designed to prevent condensation and frost in electrical enclosures, control cabinets, and industrial panels. Equipped with a self-limiting PTC heating element and integrated adjustable thermostat, it delivers safe, constant-temperature heating without overheating risks. The built-in axial fan circulates warm air evenly inside the cabinet, eliminating cold spots and protecting sensitive electronics from moisture and low temperatures. With a flame-retardant plastic housing, DIN rail mounting, and a clear operation indicator, it is a reliable solution for maintaining stable internal conditions in industrial environments.
Compact heater
Heating capacity adjusts to ambient temperature
Adjustable temperature range
Clip fixing
Optical indicator
Temperature safe cut-out
Semiconductor fan heater prevents formation of condensation and ensure en even temperature in switch and control equipment, The built-in regulator is used to set the desired temperature.
Technical Data:
| Heating element | PTC resistor, self regulating and temperature limiting |
| Temperature safety cut-out | To protect against overheating in case of fan failure |
| Axial fan, ball bearing | Airflow see table |
| Service life 50,000h at 25°C (77°F) | |
| Connection | 2-pole clamp 2.5mm2, clamping torque 0.8Nm max. |
| Casing | Plastic according to UL94 V-0, light grey |
| Optical indicator | Thermostat control lamp |
| Mounting | Clip for 35mm DIN rail, EN 50022 |
| Fitting position | Vertical |
| Dimensions | 100 x 128 x 165mm |
| Operating / Storage temperature | -45 to +70°C (-49 to +158°F) |
| Protection type / Protection class | IP20 / II (double insulated) |
-
What Wire Size Mistakes Can Make a 60 Amp Breaker Unsafe?
Quick Answer A 60 amp breaker wire size should not be selected from the breaker rating a...
Date:2026-06-08 -
Knowledge of switching appliances: learn the basic principles of miniature circuit breakers
For ordinary people, the term miniature circuit breaker is relatively unfamiliar, but ...
Date:2025-06-18
Why Is Short-Circuit Coordination Important in a Motor Starter?
A motor starter does more than switch a motor on and off. It must also protect the motor circuit when...
Date: 2026/06/11
Circuit Breaker vs Contactor vs Overload Relay: What Is the Difference?
Quick Answer A circuit breaker, contactor, and overload relay are often installed together in a motor control circuit, but they...
Date: 2026/06/09
What Wire Size Mistakes Can Make a 60 Amp Breaker Unsafe?
Quick Answer A 60 amp breaker wire size should not be selected from the breaker rating alone. Although 6 AWG copper...
Date: 2026/06/08
What Is the Purpose of a Miniature Circuit Breaker in a Low-Voltage Electrical System?
Quick Answer The main purpose of a Miniature Circuit Breaker is to protect low-voltage electrical wiring and circuits against excessive current...
Date: 2026/06/05
Why Is MCB Protection Not Only About Rated Current?
Quick Answer MCB protection is not only about rated current because an MCB must protect the whole circuit, not just...
Date: 2026/06/03