GE M-Pact Plus User Manual

A.21
M-PACT Plus
Accessories
A
B
C
X
Mechanical interlocks can be fi tted to the following electrical
systems and can link 2 or 3 circuit breakers of any rating or
number of poles, fi xed or withdrawable.
Typical circuit Interlock confi guration Possible combinations
Type A
Interlocking between 2 circuit breakers
B1 normal power supply
B2 generator (emergency) supply
B1 B2
00
I0
0I
Circuit breaker B1 can only close if B2 is open
Circuit breaker B2 can only close if B1 is open
Type B
Interlocking between 3 circuit breakers
3 power supplies (generator or
transformers) feeding the same
busbar but parallel operation is prevented.
Available upon request.
B1 B2 B3
000
I00
0I0
00 I
Only 1 from 3 breakers can be closed
Type C
Interlocking between 3 circuit breakers
2 bus sections can be powered by a
single transformer (bus coupler
closed) or by both transformers
(bus coupler open).
Available upon request.
B1 B2 B3
000
I00
0I0
00 I
I0I
0I I
II0
Any 2 from 3 circuit breakers can be closed
Any 1 from 3 circuit breakers can be closed
Interlocks

GE M-Pact Plus Specifications

General

Brand	GE
Model	M-Pact Plus
Category	Circuit breakers
Language	English