Automatic 15% discount for all contractors on all orders over £100 excluding VAT

The WKC240C is a 40 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) providing robust short-circuit and overload protection for moderate inrush applications. The C-curve tripping characteristic is ideal for HVAC systems, small machinery, and feeder circuits where start-up currents exceed standard B-curve tolerances.

Featuring dual-pole isolation, the breaker disconnects both live conductors simultaneously for improved safety and compliance with BS EN 60898-1. Its compact 36 mm housing fits any 35 mm DIN rail across consumer units, distribution boards, or industrial enclosures.

Installer Tip: The 40 A C-curve MCB is well suited for HVAC plant and feeder circuits where a B-curve may trip unnecessarily. For high inrush applications such as compressors or large pumps, upgrade to the D-curve version.

Key Features

  • 40 A rated – ideal for HVAC, machinery, and feeder circuits
  • 10 kA breaking capacity – suitable for high fault-level environments
  • 2-pole isolation – disconnects both live conductors at once
  • C-curve tripping – prevents nuisance tripping on moderate inrush
  • Bi-directional terminals – flexible top or bottom feed connection
  • 36 mm (2-module) DIN-rail body
  • Complies with IEC/EN 60898-1 and the 18th Edition Wiring Regulations

Compare 2 Pole 10 kA MCB Variants

Model Rating Curve
WKC240B 40 A B Curve
WKC240C (This Product) 40 A C Curve
WKC240D 40 A D Curve
Translation missing: en.general.search.loading