Circuit Breaker Locking and Interlocking
Lockable Push Button Cover
A transparent cover blocks access to the push buttons used to open and close the device. It is possible to independently lock the opening button and/or the closing button. The push buttons may be locked using:
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One to three padlocks: 3/16 to 5/16 in. (4.8 to 7.9 mm) diameter, not supplied
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Wire seal
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Two screws
| Push Button Lock |
Open Position Padlock and Key Lock Provisions
|
Open Position Key Lock (NW) |
Open Position Padlock Provision (NW) |
The circuit breaker is locked in the off position by physically keeping the opening push button pressed down using one of the following:
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One to three padlocks: 3/16 to 5/16 in. (4.8 to 7.9 mm) diameter, not supplied.
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Key locks: One or two Kirk® key locks (keyed alike or differently) are available for UL Listed/ANSI Certified circuit breakers; for IEC Rated circuit breakers, Ronis, Castell, or Profalux key locks are available. (MastePacT NT circuit breakers may have only one key lock on the circuit breaker.)
Keys may be removed only when locking is effective. The key locks are available in any of the following configurations:
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One key lock
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One key lock mounted on the device plus one identical key lock supplied separately for interlocking with another device
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Two different key locks mounted on the circuit breaker for double locking
A locking kit for installation of one or two key locks may be ordered separately.
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Type of Locking |
Maximum Number of Locks |
|
|---|---|---|
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Pushbutton Locking |
Using padlocks |
Three padlocks |
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Open Position Locking |
Using key locks |
Two key locks (optional) |
|
Using padlocks and key locks |
Up to three padlocks and two key locks (optional) |
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