1. Boring here, and
polish the hole
make it smooth
2. Installation sequence:
4. Push the red button “ON”, and take
the key out, then install the cover.
1. Components of the locking system:
★ NA1Install the locking system
15.9 Off position locking mechanism
When the circuit breaker is disconnected, padlock can be used to lock it after pulling out the lock lever, then the circuit breaker
can't be “Test” or “connected” position.( Padlock is prepared by users)
15.10 Key lock
Lock the circuit breaker on the OFF position, then the circuit breaker can't be closed.
Locks and keys will be provided by us.
Separate lock and key is matched with one set of the circuit breaker.
Three same locks and two same keys are matched with three circuit breaker.
Note: Before pulling out the key, the break pushbutton should be pressed first, rotate the key anticlockwise, then pull it out.
15.11 Cable mechanical interlock
It can realize the interlock of two horizontal or vertical-installed, three poles or four poles ,
drawout type or fixed type circuit breaker.
a. If need bend the cable, make sure the radian is more than 120°.
b. Check and make sure enough lubricating oil of the cable.
c. The maximum distance between two interlock circuit breakers is 1.5m.
Notes: a. when the steel cable needs to be bent, enough transition arc should be reserved to guarantee flexible movement of steel cable;
b. check the steel cable and make sure there is enough lubricant in the steel cable to guarantee flexible movement of steel cable.
1QF 2QF
1QF
2QF
0 0
0 1
1 0
Circuit diagram
Available running manner
key
lock
3. Install the
lock here
washer
2. Put the washer into
the hole
+ +
15.12 Connecting-rod type mechanical interlock
Two vertical-installed three-poles or four-poles, drawout-type or fixed type circuit breakers realize the interlock between one
breaker with another two different-state breakers.
1QF 2QF
1QF
0
0
2QF
0
1
1 0
Circuit diagram Available running manner
Manner 1: three power supplies are provided
for one circuit breaker only
0.9m(max)
52 60
52 60
40
175
190
40
175
190
50
50
C
NA1
Air Circuit Breaker
P-092
P-091
NA1
Air Circuit Breaker
1.5m(max)
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