Electrical Supplies
MCB
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- Schneider Acti9 iC60 miniature circuit breakers, the iC60N, iC60H and iC60L breaking-capacity tiers spanning 0.5 to 63 A in 1P, 2P, 3P and 4P, with B, C and D tripping curves and breaking capacity to 25 kA on the iC60L. Thermal tripping handles overload, magnetic tripping handles short circuit, and add-on RCD, auxiliary contact and shunt trip modules clip onto the same DIN rail.
Application
Protect final circuits throughout residential, commercial and light industrial installations, lighting, sockets, small motors and control supplies. Curve selection is the decision that matters: B curve for resistive and lighting loads, C for general mixed circuits, and D for transformers and motors whose inrush would nuisance-trip a C curve. Above 25 kA prospective fault current the duty moves to an MCCB.
Standards & Reference 4 cited
IEC/EN 60947-2
Circuit breakers: breaking capacity, utilisation categories and the coordination behaviour a protection study depends on.
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.
Also citedIEC/EN 60898-1IEC 61009-1 (RCBO)
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