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ATS/ACB/VCB/circuit-breakers.

An ATS is an automatic transfer switch: when mains power fails it switches to the generator, and when mains power returns it switches back, with no operator needed at the panel. It is mandatory on projects with standby generators — factories running shifts, buildings with fire pump systems, cold stores.

ACB units and circuit-breakers are used for very high-current circuits at the main switchboard, typically with an electronic trip unit whose pickup thresholds and time delays can be adjusted to coordinate protection with the downstream levels. For this group, protection coordination must be calculated from the project's actual single-line diagram, not selected on rated current alone.

  • IEC 60947-2
  • Chint
  • Automatic mains – generator transfer
  • Protection coordination must be calculated from the diagram
  • 38items
  • 7brands
  • 8product lines
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Number of poles3 items without data
Rated current In, A2 items without data
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8 lines · 38 matching items

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Often used together in switchboards

Suggested by product group · not a substitute for sizing advice

MCCB circuit-breakers

572 items · 9 brands

MCB circuit-breakers

570 items · 9 brands

Residual current devices (RCCB, RCBO, ELCB)

335 items · 8 brands

Magnetic contactors

299 items · 6 brands

Electrical enclosures

397 items · 9 brands

Terminal blocks

59 items · 2 brands

One Source for the Whole Project.

16,297 items · 72 brands · 17 product groups

Wires and cables7,406Switchgear and protective devices1,892Control and automation equipment1,633Socket-outlets, plugs and switches1,440Lighting1,324Electrical enclosures and accessories567Medium-voltage equipment483Measuring and display instruments355Cable accessories and connectors323Conduits and installation accessories296Signalling and warning devices225Power supplies, voltage stabilisers and transformers118Cable ladders, trays and accessories94Fans and ventilation84Installation tools and materials29Pumps15Residential electrical products13

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