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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Looks more like a Starbreaker db to me. Today checked again and this time mcb did not trip rcd when switched back on.

Crabtree Loadstar 6HS16B B Type 16A Single Pole Mcb

If it does not trip, the fault is with the wiring. OP have you tried to remove the breaker? May I thank you all for you contributions to my query. Thanks peter but no.

Perhaps the UV got to it? 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. The circuit in question needs meggering, doesn’t sound like an mcb problem to me. You must log in or sign up to reply here. Yes I think I was barking up the wrong tree with my mcb hard loaddstar Yes odd I know! To do this you would also need to remove the neutral of the suspect circuit.


Have you had any little furry visitors having a chew at the cable? For the MCB to be the cause, there would have to be a path for the lost current to take. RCD trip due to there being a difference in the current going out through frabtree live and the current returning through the Neutral.

Usually caused by some or all the current leaking to Earth due to a short on either the live or Neutral conductors. The circuit is just one twin and earth going directly from mcb to a twin 13a socket which has now been disconnected!

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

As other poster said that aint the neutral bar it is the LIVE busbar. New cable through house to a junction box situated under cover in dry position supplying two power points to ip67 on house wall One carbtree point supplying small pump Last week rcd tripped. Disconnected both sockets from junction box.

Do you already have an account? There is no issue re moisture as this is all in the dry As mcb Has anyone seen this typ3 of thing before?


Hi spinlondon thanks cable fully enclosed.

Alun TomApr 25, Log in or Sign up. Unusual for an MCB to fail, are you sure its not overloaded. RCDs will also trip if too much current returns via the Neutral, something associated with shared neutrals.

BazzaApr 26, I will now get an expert in and see what can be found. Not likely to be mcb at fault. Its not, JP, they have special shrouded busbars and a single tab lock-in system unique to the Starbreaker. Switched off mcb for garden and switch on rcd all ok until mcb switched back on again! TBH I think you are better getting someone in for this. I was not thinking when writing thread sorry but thanks for highlighting it!! Your name or email address: Yes my fault re polarity of bus bar!!

I am glad you corrected me on that issue!