1
Fig. 7:
Thermal circuit breaker for exhaust gas temperature monitoring
1 Thermal circuit breaker
Procedure
► Connect the electrical connection of the thermal circuit breaker such that an alarm is triggered and
the vacuum pump shuts down when the gas temperature exceeds 110 °C.
T
>
1
1
2
2
3
4
Fig. 8:
Connection data for the thermal circuit breaker
● Pin 1 = Brown
● Pin 2 = White
● Pin 3= not connected
● Pin 4= not connected
Part number
PK 100 135 -T
Classification
Temperature Switch
Monitored Features
Exhaust gas temperature
For pump
Hena 400 – Hena 1600 | Hena 401 | Hena 631
Temperature: Operating
-12 – 130 °C
Connection
M12x1, 4-pin
Cable length
3 m
Set point: Temperature max.
110 °C
Accuracy: % of measurement
± 5 %
Switching voltage
90 – 230 V AC / 1 – 48 V DC
Current max.
1 A
Contact
Normally closed
Protection category
IP65
Tbl. 5:
Technical data / temperature switches
Installation
27/70
