Accessories
4.14 DIN rail adapter
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
415
Introduction
Description of application and basic function
The DIN rail adapter is used to mount molded case circuit breakers on 35 mm DIN rails of
meter or distribution cubicles, for example. DIN rail adapters are available exclusively for
3VA1 molded case circuit breakers in sizes 100 A and 160 A since, on the one hand, DIN
rails are not designed to support heavy weights and, on the other, only molded case circuit
breakers with thermal-magnetic trip units and rated operational currents up to maximum 160
A are normally installed in distribution boards.
The DIN rail adapters are snapped onto the rear panel of the molded case circuit breaker or
fastened by screws. With an adapter installed, the circuit breaker is simple to attach to a DIN
rail. This is done by placing the circuit breaker with attached DIN rail adapter from above
onto the DIN rail and then pressing the bottom half of the circuit breaker lightly against the
rail until the adapter engages.
Overview of variants and products
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