Used But Good Condition. Crabtree Loadstar Range MCB. Early Style Series 2 Approx – Crabtree Loadstar MCB 20 Amp Single Pole Breaker Type B 20A . Product Description. Crabtree Loadstar 6HS16C C Type 16A Single Pole Mcb. 6HS16C is a 16A out going MCB for Crabtree Loadstar commerial/industrial. Product Description. Crabtree Loadstar 6HS16B B Type 16A Single Pole Mcb. 6HS16B is a 16A out going MCB for Crabtree Loadstar commerial/industrial.

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Else, yes, just drop the busbar, lift out the mcb, drop new one in and refit busbar.

Crab 6HS40C MCB SP Type C 40A 10kA

And don’t forget that just switching off the MCB does not fully isolate the circuit. No, create an account now. I am glad you corrected me on that issue! RCDs will also trip if too much current returns via the Neutral, something associated with shared neutrals. Usually caused by some or all the current leaking to Earth due to a short on either the live or Neutral conductors. Today checked again and this time mcb did not trip rcd when switched back on.

Yes I think I was barking up the wrong tree with my mcb hard fault! Crabtree Loadstar consumer unit. Yes my fault re polarity of bus bar!! Maybe the MCB has another circuit connected to it. Placed a light attachment to one of the sockets and all was well for some 5 or so hours.

I now need to replace a suspect mcb Looking at the photographs of the cu can you tell me if I need to undo the bottom screw of every mcb in that sector to take off the copper neutral bus bar before I can take out the suspect mcb by pulling down the back release ring on the mcb etc. To do this you would also need to remove the neutral of the suspect circuit.


OP have you tried to remove the breaker? Alun Tom likes this. The screw is already loose. You should find water problems in at least one of them.

Crabtree Loadstar Single Pole Type B 6A MCB | Industrial Switch Gear | Mylights

There is no issue re moisture as this is all in the dry Crabtrfe mcb Has anyone seen this typ3 of thing before? Log in or Sign up. Alun TomApr 26, Switched off mcb for garden and switch on rcd all ok until mcb switched back on again! This is after I toggled mcb switch a dozen times!

You must log in or sign up to reply here. I will now get rcabtree expert in and see what can be found.

Rcd still tripped immediately whenever mcb was switched on. Does not see daylight! Now only the 2. Unusual for an MCB to fail, are you sure its not overloaded. TBH I think you are better getting someone in vrabtree this. If it does not trip, the fault is with the wiring.

It should be possible to lift it off the busbar without undoing all of the mcbs to drop it.

Yes, my password is: The mcb will cdabtree move Clip pulled down but no movement on this mcb or on other individual mcb if trying individually to remove even with bus bar screw released. Thanks peter but no. May I thank you all for you contributions to my query.


RCD trip loafstar to there being a difference in the current going out through the live and the current returning through the Neutral. The cable runs are enclosed in plastic trunking so it should not be affected by vermin!!!!

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Thought it was the pump. Alun Tom and unphased like this. New cable through house to a junction box situated under cover in dry position supplying two power mcn to ip67 on house wall One power point supplying small pump Last week rcd tripped. Perhaps the UV got to it?

I have a Crabtree Loadstar cu that was installed some five years ago. Have you had any little furry visitors having a chew at the cable?

Disconnected both sockets from junction box. Do you already have an account? Symptoms are this Peter p There is a dedicated crabtgee for the garden The circuit was installed from new some 5 years ago. Not likely to be mcb at fault. It is a Loadstar. Agree it won’t is highly unlikely! BazzaApr 26, I was not thinking when writing thread sorry but thanks for highlighting it!! Looks more like a Starbreaker db to me. Its oladstar, JP, they have special shrouded busbars and a single tab lock-in system unique to the Starbreaker.