MCB distribution boards look after seahorses and sharks

The National Marine Aquarium in Plymouth has ordered miniature circuit breaker (MCB) distribution boards and a main switchboard and sub-station from Cutler-Hammer to support all its low-power requirements, including lighting and building services.

The equipment installed and supported by Mitie Engineering features a combination of single phase 125A boards and three phase 250A boards distributed across the aquarium’s 9,000m2 floor space.

The Cutler-Hammer MCB features a visual contact position indicator so switching status can be seen at a glance, and a quick-action fixing mechanism for 35mm DIN rail mounting. The MCB’s thermal release mechanism, which comprises a bimetal snap action disc incorporated in the magnetic release, lessens the number of welds required, reducing power-loss when in service by approximately 30%. The MCB also complies with the latest international standard EN 60898 and the mechanism is trip free, preventing the MCB from being held in the on position.

The single phase 125A Cutler-Hammer A Series distribution board is a 1.6mm construction designed to accept the latest SPCL MCB with ratings from 0.5 to 63A at 10kA to EN 60898, and features a two-piece clamping rail that provides positive location for both incoming and outgoing devices. The three phase 250A B Series distribution board incorporates a busbar with a 16kA one-second withstand rating, and provides positive location for outgoing MCBs and RCBOs via a two-piece clamping rail.

The £15 million National Marine Aquarium building opened in Plymouth in May 1998. Its main attractions include seahorses, sharks, and a deep reef tank containing 750,000l of seawater one of the largest in Europe.

Cutler-Hammer Tel: 01234 267433