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Technical
Section 11
Dimensions
Section 12
3
P25M
Electrical auxiliaries
Load protection
Motor starter protection
The electrical auxiliaries allow remote tripping or position or fault indication of the
PM25 circuit breakers.
Connection
Cables
Rigid
Flexible
Flexible with
ferrule
Mini
1 x 1 to 2.5 mm
2
1 x 0.75 to 2.5 mm
2
1 x 0.75 to 1.5 mm
2
Maxi
2 x 1 to 2.5 mm
2
2 x 0.75 to 2.5 mm
2
2 x 0.75 to 1.5 mm
2
Tightening torque
1.4 N.m
Catalogue numbers
Trip units
Type
Control voltage
(V AC)
Width in 9 mm
modules
Cat. no.
1 MX shunt release
b
b
Emergency stoppage by normally open push button
b
b
Causes tripping of the associated device when powered
C1 C2
u>
220...240
2
21127
380...415
2
21128
2 MN undervoltage release
b
b
Emergency stoppage by normally closed push button
b
b
Ensures the safety of power supply circuits for several machines by
preventing untimely restarting
b
b
Causes tripping of the circuit breaker with which it is associated when
its input voltage decreases (between 70% and 35% of Un)
b
b
Prevents closing of the device until its input voltage has been restored
D1 D2
u<
220...240
2
21129
380...415
2
21130
Auxiliary contacts
Type
Width in 9 mm
modules
Cat. no.
3 Position and fault tripping indication contacts
F + SD.F
53
54
97
98
1
21118
O + SD.F
51
52
97
98
1
21119
F + SD.O
95
96
53
54
1
21120
O + SD.O
95
96
51
52
1
21121
4 Position contacts
O + F
31
32
43
44
1
21117
F + F
43
44
33
34
1
21116
1
3
4
2
MN
MX
OF
SD
P25M
4
OF
4
OF
1 MN or MX trip unit at most
2 auxiliary contacts at most, 1 SD only.
SD is always mounted next to the P25M.
"O ": normally closed contact
" F ": normally open contact
SD: contact indicating the position of the associated device in the event of an electrical fault
SD.F: to indicate a closed contact fault
SD.O: to indicate an open contact fault