Safe Supply Units

WELU Series Safe Supply Unit

Type Ref: WELU/3/5/C3-10

3kVA icon 230v icon Wall mounting icon RCD icon


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WELU series Safe Supply Unit, 3 kVA, 5mA RCD, 3 x 10A DP MCBs

WELU series of composite Safe Supply Unit comprising of a 1:1 ratio, double wound transformer with a centre-tapped restricted earth output and extra high sensitivity RCD protection.

Enclosure – Wall mounting, sheet steel with a durable, white, polyester powdercoat finish, oven dried. The enclosure is vented with fine mesh protection to prevent the insertion of foreign bodies. Knock-outs are incorporated to simplify installation.
Enclosure dimensions – 332H x 372W x 395D mm
Rating – 3 kVA single-phase continuously rated double wound transformer, manufactured in accordance with BS EN 61558 Parts 1 and 4 but with an earthed secondary. The transformer is designed to have a low inrush current but should be fed from a Type “D” MCB or motor rated fuse.
Primary Volts – Tapped at 230.240.250 and 260
Secondary Volts – 230 Centre-tapped with restricted earth. The maximum line to earth voltage is 115 volts.
Restricted Earth – A 12 kΩ current limiting resistor is incorporated in the CT to E path, which restricts the maximum line to earth current to 10 milliamps.
RCD Protection – Fitted on the secondary with a 16 amp double-pole MCB with shunt-trip working in conjunction with a 5 mA sensitivity earth leakage sensor.
Distribution – Fitted with 3 no. 10 amp double-pole distribution MCBs.

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This product cannot currently be purchased online. Please contact Blakley Electrics Customer Services on 01322 318000 to discuss your requirements and for pricing and lead times.