Sub Main Distribution Board (SMDB)

Specifications:

  • Compatible and type tested in accordance with IEC 61439-1 & 2
  • Rated insulation voltage up to 800V
  • Main busbars rated up to 630A
  • Busbar short-circuit withstand capacity up to 50kA for 1 Sec
  • Neutral busbars rated up to 100% of the main busbar, Earth busbars rated up to 50% of the Neutral busbar
  • Available Up to 14 outgoing MCCB’s
  • Designed for Ambient temperature up to 50 °C
  • Wall mounted and free standing designs
  • Available for indoor & outdoor applications, up to IP66
  • Standard Color: RAL 7035 – (other colors on request)
Category:

Description

The MDB then feeds SMDBs, which is installed generally at the point where a large distribution cable terminates and several smaller sub-circuits start. These are the switchboards that although similar construction, are larger than a final distribution board circuit. The boards are installed midway through the power distribution system, at the point in a large distribution cable ends, and several smaller starting sub-circuits. Sub main distribution boards are also referred to as MCCB panels. A typical SMDB is equipped with MCCBs/ACBs as incomer and MCCBs as outgoings. Incomer is connected to upstream Main Distribution Board whereas MCCB outgoings are connected to downstream loads. These MCCBs wall mount with user friendly arrangements.

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