Specifications

29
COMPACT
®
NS circuit breaker
Interlocking systems
Interlocking prevents the simultaneous closing of two circuit breakers.
Interlocking of circuit breakers with toggle control
Two models:
■ For COMPACT
®
NSF150–NSF250 circuit breakers (three-pole or four-pole);
■ For COMPACT
®
NSJ400–NSJ600 circuit breakers (three-pole or four-pole).
Padlocking systems can receive one or two padlocks with diameters ranging from
0.19 to 0.31 inch (5 to 8 mm) .
Both interlocked circuit breakers should be fixed version or plug-in version.
■ Two sliding interlocking bars can be used to interlock three circuit breakers
installed side-by-side, in which case one circuit breaker is in the ON position and the
two others in the OFF position.
E28041
Interlocking of circuit breakers with rotary handles
For COMPACT
®
NSF150–NSJ600 circuit breakers
Interlocking with keys
For circuit breakers equipped with rotary handles or a motor mechanism.
■ Interlocking with keys may be easily implemented by equipping each of the
COMPACT circuit breakers, either fixed or drawout mounted, with a directly mounted
rotary operating handle and a standard keylock, but with only one key for the two
keylocks. This solution enables interlocking between two circuit breakers that are
geographically distant or that have significantly different characteristics.
Use:
■ A keylock adapter (different for each device);
■ Two identical keylocks with a single key.
E28042
E28046
Interlocking with toggle control
Interlocking with rotary handles
Interlocking with keys
Accessories
COMPACT
®
NS circuit breaker: functions and characteristics
push
to
trip
push
to
trip
push
to
trip
ON
I
O
OFF
push
to
trip
ON
I
O
OFF
ON
I
O
tripped
tripped
ON
I
OFF
O
reset
reset
OFF
push
to
trip
O
OFF
ON
I
push
to
trip
ON
I
O
OFF
reset
Control device Means NSF150–NSJ600
Toggle Sliding bar interlocking ■
mechanical device
Rotary handle Mechanical ■
(directly or interlocking
door mounted) 2 keylocks and 1 key ■