Glossary
3VL molded-case circuit breakers
354 System Manual, 03/2009, 110 0110 - 02 DS 01
M
Magnetic
MCCB (molded-case circuit breaker)
Molded-case circuit breaker
Measured value display
Graphic or alphanumeric display of a measured quantity.
MLFB
Machine-readable product designation
N
Neutral protection
NC (no connect)
No connect
Neutral conductor
Conductor in AC systems that, in contrast to the outer conductor, is not electrically live. It is
used for returning current when the circuit is closed.
NH (normal high)
Normal high
NHL (normal high large)
Normal high large
Outer conductor
AC voltage distribution board (230 V) in three-conductor networks. Also called phase
conductor or phase.
Overload protection
Protection against excessive load on the electrical components.
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