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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New cable through house to a junction box situated under cover in loadxtar position supplying two power points to ip67 on house wall One power point supplying small pump Last week rcd tripped. Do you already have an account? Today checked again and this time mcb did not trip rcd when switched back on. You must log in or sign up to reply here.

Crabtree Loadstar Single Pole Type B 6A MCB

Not likely to be mcb at fault. Thought it was the pump. Alun Tom likes this. BazzaApr 26, Rcd still tripped immediately whenever mcb was switched on. Yes I have thought of it but discounted that as a cause!!

Maybe the MCB has another circuit connected to it. I am glad you corrected me on that issue! Placed a light attachment to one of the sockets and all was well for some 5 or so hours.

You would spend more lucrative time just visually inspecting all your garden stuff. As other poster said that aint the neutral bar it is the LIVE busbar.

I was not thinking when writing thread sorry but thanks for highlighting it!! Your name or email address: I loadstxr 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.


Alun Tom and unphased like this. For the MCB to be the cause, there would have mcn be a path for the lost current to take.

May I thank you all for you contributions to my query. The ends of the supply wire temporarily terminated by a choc box connector At present still tripping in that state but yesterday when reconnected to the socket worked for approximately 6 hours without tripping anything then mid evening Looks more like a Starbreaker db to me.

Yes my fault re polarity of bus bar!! Does not see daylight! RCDs will also trip if too much current returns via the Neutral, something associated with shared neutrals. Alun TomApr 25, Its not, JP, they have special lozdstar busbars and a single mfb lock-in system unique to the Starbreaker. To do this you would also need to remove crbatree neutral of the suspect circuit.

Crabtree Loadstar 6HS16B B Type 16A Single Pole Mcb – Your Electrics | Electrical Supplies

Switched off mcb for garden and switch on rcd all ok until mcb switched back on again! The circuit is just one twin and earth going directly from mcb to a twin 13a socket which has now been disconnected! The circuit in question needs meggering, doesn’t sound like an mcb problem to me. Usually caused by some or all the current leaking to Earth due to a short on either the live or Neutral conductors.


Yes I think I was barking up the wrong tree with my mcb hard fault! Unusual for an MCB to fail, are you sure its not overloaded. I have a Crabtree Loadstar cu that was installed some five years ago. There is no issue re moisture as this is all in the dry As mcb Has anyone seen this typ3 of thing before? Switch the circuit off, and inspect all the termination points at the different accessory positions.

OP have you tried to remove the breaker? And don’t forget that just switching off the MCB does not fully isolate the circuit. I will now get an expert in and see what can be found. The mcb will not 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.

Crabtree Loadstar consumer unit.

Crabtree Loadstar MCB TP 40a B Type 10ka 6HT40B (389)

Disconnected both sockets from junction box. TBH I think you are better getting someone in for this.

Alun TomApr 26, The screw is already loose. Have you had any little furry visitors having a chew at the cable? Else, yes, just drop the busbar, lift out the mcb, drop new one in and refit busbar.