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WL Circuit Breaker selection and application guide
Arc chute cover
The arc chute cover is available for isolating enclosure material
or parts located above the circuit breaker where heat and
exhaust gases may exit from the breakers arc chutes. Arc chute
covers are not available for fixed mounted breakers and limited
to select draw-out breaker types.
TOC (truck operated contacts)
For draw-out breaker applications a TOC device is available to
provide remote indication of the circuit breakers primary and
secondary contact connections (racking positions). When the
breaker is racked into a connected, test or disconnected
position, it activates TOC switches for external user circuits.
Low Voltage Circuit Breaker
Cradle accessories and options
MOC (mechanism operated contacts)
If additional auxiliary contacts are needed beyond what is
supplied on the breaker, a MOC switch may be used to obtain
an additional 4A and 4B set of contacts. Contacts can be
operated in the test and connect position or the connect
only position.
Characteristics table
MCC contact configurations 4NO and 4NC
AC operation Voltage 240VAC 50/60Hz
Continuous current 10A
Making current 30A
Breaking current 3A
DC operation Voltage 24, 125, 250VDC
Making current 1.1A @ 24 or 125VDC,
.55A @250VDC
Breaking current 1.1A @ 24 or 125VDC,
55A @250VDC
TOC Switch Breaker disconnected = primary Breaker in test = primary Breaker connected = primary
and secondary contacts contacts disconnected and and secondary contacts
are disconnected secondary contacts connected are connected
Switch Option 1 1 form C contacts 1 form C contacts 1 form C contacts
Switch Option 2 1 form C contacts 2 form C contacts 3 form C contacts
Switch Option 3 0 form C contacts 0 form C contacts 6 form C contacts
AC voltage 120, 240VAC
AC continuous current 10A
TOC Contact Ratings AC making/breaking current 6A@120V, 3A@240VAC
DC voltage 24, 48, 125, 250VDC
DC continuous current 6A, 1A, 1A
DC making/breaking current 6A, 0.22A, 0.11A
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