Electronic Temperature Limiter ETBA 1 Ex-ib to limit temperatures of devices in flame proof areas.
The limiter measures the temperature at the HOT SPOT by means of PT100 sensor and supervises this procedure of -4… 460°C as self-sufficient system.
Whenever the measured temperature is higher than the adjusted switching temperature, the main circuit will be opened and locked. Unlock is possible with the unlock switch at the Temperature Limiter ETBA or remote controlled,
After a failure of supply voltage the ETBA switches into the same condition as before the supply voltage failure.