These devices are suitable for operation in explosion-proof and flammable environment (e.g. heat-pumps with R290 refrigerant), as they are housed within an enclosure sealed with a special resin. They automatically switch off the current in the controlled circuit as the pre-set temperature limit is reached, thus preventing overheating. Once the defection of the temperature regulation was repaired, in voltage-free state, the limiter / protective guard can be re-started manually. Important: the reset function should only be operated after the sensor has cooled down to room-temperature, otherwise the forced reset will cause fatal damage to the device.
Working temperature range: 0- 130 °C
Areas of application:
– heat-pumps or other devices requiring explosion-proof protection.
Trouble-free operation is conditioned by proper heat transfer between the protective limiter’s sensor and the controlled medium.
