Screwfix Logo
Activating the button will move focus to the expanded search input field
Buy 5+ Save 15%on selected MK MCBsview all products
Trade Bulk Save
MK Sentry  40A SP Type B  MCB
MK Sentry

MK Sentry 40A SP Type B MCB (831KP)

Single pole one-module unit with a breaking capacity of 6kA. The switch can be locked in either the on or off position without affecting the ability of the trip mechanism to operate. Suitable for installation in MK Sentry consumer units.

  • DIN Rail Mounted Fitting
  • 6kA Breaking Capacity
  • Type B Curve
  • Trip-Free Mechanism
  • Positive Contact Status Indicator
  • Tunnel-Type Touchproof Captive Terminals
  • Protective Shutter
  • Generous Terminal Capacity
More Info

View all: MK Sentry MCBs

£3.49Inc Vat

Add to basket for...

Add to saved list…

You may also like:

BrandMK Sentry
Breaking Capacity (Inc)6 kA
CSU DeviceMCBs
Curve TypeType B
Incomer Fitting TypeDIN Rail Mounted
Manufacturer Guarantee1 Year Guarantee
Model NoH5940S
No. of PhasesSingle-Phase
Number of PolesSingle Pole
Pack Size1
Pieces in Pack/Case1
Product TypeMCB
Rated Impulse Withstand Voltage (Uimp)4 kV
Rated Operational Current (In)40 A
Rated Operational Voltage (Ue)240 V
Suitable Cable Size25 mm