Connection versions - overview
Numerous connection versions are available (see also Section Accessories for connection and
insulation (Page87)). All versions can be used both for oor mounting and for rear wall
mounting:
• Front terminals:
– For xed-mounted breakers: directly or with extended terminal elements, as in the case
of the molded case circuit breakers. This saves work and costs.
– For withdrawable breakers: with extended terminal elements accessible from the front
• Rear connection:
– For xed-mounted breakers and withdrawable breakers: Horizontal or vertical orientation
• Cable connection for copper/aluminum cable:
– For xed-mounted breakers: on the front directly with cable clamps
– For withdrawable breakers: on the rear with cable lug
Connection Fixed-mounted breaker Withdrawable breaker
Front
Front
broadened terminals for main cir‐
cuit connection
Rear
Cables
Application planning
4.1Types of installation and installation locations
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 131
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