Electrical Supplies
Load break switch (L.B.S)
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About
- Schneider switch-disconnectors built to make and break load current safely, with arc-extinguishing contacts rated for on-load operation. Available as plain or fused versions, panel-mounted or in an enclosure, from a few amps up to well over a thousand, the FuPact switch-disconnector fuse range alone spans 32 A to 1250 A.
Application
Used as the incoming device on distribution boards, as isolation for motors and machines, and as changeover switching between mains and generator supplies. Unlike a disconnector, a load break switch is designed to be operated with the circuit energised, which is what makes it the right device where a machine must be switched off locally by an operator rather than by tripping a breaker upstream.
Standards & Reference 5 cited
IEC/EN 60947-1
The general rules underneath every piece of low-voltage switchgear and controlgear: definitions, ratings and the test conditions the product-specific parts build on.
IEC/EN 60947-3
Switches, disconnectors, switch-disconnectors and fuse-combination units: the devices that isolate a circuit safely rather than protect it.
IEC 60529
The IP code. Two digits stating how well an enclosure keeps out solid objects and water, IP65 and the like. The number a specifier reads first when equipment sits outdoors or in a plant room.
KEMA-KEUR
Independent Dutch product certification, a long-standing mark of tested electrical safety in European specifications.
CCC
China Compulsory Certification: the mandatory safety mark for products placed on the Chinese market.
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