Front Connected Low Voltage Switchgear



Siemens Type WL front connected low voltage switchgear has a shallow depth (39.2”) and doesn’t require any rear access or rear working space. All customer connections are accessible from the front of the switchgear.



What is front connected low voltage metal-enclosed switchgear and how is it different from traditional rear connected low voltage switchgear?

With traditional rear connected low voltage switchgear, each vertical section contains the following three compartments:

  1. Front compartment containing breakers and/or auxiliary components

  2. Middle compartment containing vertical and horizontal bus

  3. Rear compartment containing breaker connections (line and/or load). Typically the breaker connections are cables, but could be busway





With front connected low voltage switchgear, the rear breaker connection compartment is physically relocated to a separate vertical section beside the vertical section containing the breakers. All incoming and outgoing breaker connections are accessible from the front of the vertical section. Using feeder breakers with load side cable connections as an example, the runbacks coming off the load side of the feeder breakers run over to a separate section and the breaker connections are accessible from the front of the switchgear.

With front connected low voltage switchgear, all customer connections (incoming cable lugs, outgoing cable lugs, ground lugs, neutral disconnect, etc.) are front accessible.


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