temperatuursafhankelijke

Temperatuursaf, often translated as temperature safety cutoff, refers to a device or mechanism designed to prevent overheating by interrupting electrical power or limiting temperature when a predefined threshold is reached. The core elements are a temperature sensor (such as a thermocouple, RTD, or thermistor) and a switching or control element (such as a bimetallic strip, relay, solid-state controller, or resettable PTC). When the sensor detects a temperature above the set point, the protective element acts to stop current flow or activate cooling, thereby reducing the risk of damage or fire.

There are two broad categories: non-resettable thermal fuses that permanently open the circuit when a temperature is exceeded, and resettable temperature protectors (thermostats and PTC-based devices) that can restore operation after cooling. Some systems use programmable controllers that trigger cooling fans or liquid cooling to maintain safe temperatures.

Common applications include power supplies, motors, transformers, battery packs, consumer electronics, and HVAC equipment. Selection depends on the temperature range, response time, environmental conditions, electrical ratings, and whether a reset is desirable.

Standards and testing ensure reliability and safety, with references to IEC, UL, and EN standards for thermal protection devices. Limitations include response delay, calibration drift, or nuisance tripping in environments with fluctuating temperatures.