Siemens 3AK Operating Instructions Manual page 33

a)
9229 9923 176 0B
2013-09-09
b) c)
1) Integrated varistor
2) Integrated rectifier for AC/DC ≥ 100 V
3) Attention: connect L+ for direct current (DC)
a) Undervoltage release
b) Low-energy trip-coil
c) 1st transformer-operated release
d) Signal: spring state with 64-pole plug-connector
e) Circuit-breaker tripping signal for 64-pole plug-connector
Fig. 37 Sample circuit diagram (part 3) of the vacuum circuit-breaker module
d)
Description
e)
33