Accessories
4.2 Internal accessories
3VA molded case circuit breakers
150 Manual, 04/2015, A5E03603177010-02
Auxiliary and alarm switches
The auxiliary and alarm switches for 3VA molded case circuit breakers belong to an
integrated range of accessories. They can be installed in all sizes of all breakers up to 630 A.
The auxiliary and alarm switches can be very simply snapped into place and connected up in
accessories compartments provided on the front panel of the unit to the left and right of the
handle.
All auxiliary and alarm switches are designed as changeover contacts and therefore provide
a high degree of flexibility for planning and installation purposes.
The switches are available in versions HQ and HP. HQ switches are 7 mm wide, and HP
switches 14 mm wide.
Both switch versions can be combined extremely flexibly in a molded case circuit breaker.
This level of compatibility means that two HQ switches can be optionally installed in place of
one HP switch.
HQ and HP switches have the same functionality, but differ in terms of the following features:
● Connection technology
– HQ: One conductor per contact point
– HP: Two conductors per contact point possible (loop-through)
● Key electrical data
– HQ: max. 250 V; max. 6 A
– HP: max. 600 V; max. 10 A
Individual key electrical data can be found at the end of this chapter.
All HQ switches are also available in a version compatible with electronic circuitry (HP el).
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