Internal Modules - Siemens UL 1066 Operating Instructions Manual

9.2.2

Internal modules

9.2.2.1 Breaker Status Sensor (BSS)
For collecting circuit breaker status information via signaling switches and transmitting these data to the c.
Signaling switches for BSS
(1) Spring charge signaling switch
OPEN / CLOSE position
(2) Signaling switch
(3) Ready-to-close signaling switch
(4) S45 Bell Alarm signaling switch
(5) Signaling switch for connected position S46
(6) Signaling switch for test position S47
(7) Signaling switch for disconnected position S48
(8) Signaling switch S43 UVR or 2nd shunt trip
UVR or 2nd shunt trip
Springs
(5) (6) (7)
(4)
(3)
(2)
(1)
S44
Trip Unit
c
(8)
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