CRABTREE LOADSTAR PDF

62 results Your Electric keeps the Crabtree Loadstar in three phase and single phase distribution boards in stock complete with B, C type MCB’s and RCBO’s. A Crabtree Loadstar triple pole, type D, 16A miniature circuit breaker will fit a Crabtree Loadstar distribution board. Fully safe this MCB has been manufactured . Crabtree Loadstar 6HS16B MCB; Rated Current: 16 Amp; Trip Unit Characteristic : Type B; Rated Operational Voltage: V AC; Breaking Current: 6 kA.

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Log in or Sign up. Crabtree Loadstar consumer unit. I have a Crabtree Loadshar cu that was installed some five years ago. 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 loastar 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 TomApr 25, TBH I think you are better getting someone in for this. Looks more like a Starbreaker db to me.

Crabtree Loadstar consumer unit. Changing mcb

Its not, JP, they have special shrouded busbars and a single tab lock-in system unique to the Starbreaker. It is a Loadstar. OP have you ladstar to remove the breaker? The screw is already loose. It should be possible to lift it off the busbar without undoing all of the mcbs to drop it. Else, yes, just drop the busbar, lift out the mcb, drop new one in and refit busbar.

As other poster said that aint the neutral bar it is the LIVE busbar. Alun Tom likes this. 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.

Yes odd I know! Yes my fault re polarity of bus bar!! I was not thinking when writing thread sorry but thanks for highlighting it!! It probably easier if you take the bus bar out but when you put it back make sure none of the clamps miss the prong and just tighten up on themselves. Unusual for an MCB to fail, are you sure its not overloaded.

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Symptoms are this Peter p There is a dedicated mcb for the garden The circuit was installed from new some 5 years ago. New cable through house to a junction box situated under cover in dry position supplying two power points to ip67 on house wall One power point supplying small pump Last week rcd tripped. Thought it was the pump.

Disconnected both sockets from junction box. Now only the 2.

Crabtree Loadstar consumer unit. Changing mcb | Screwfix Community Forum

Rcd still tripped immediately whenever mcb was switched on. Today checked again and this time mcb did not trip rcd when switched back on. This is after I toggled mcb switch a dozen times! Placed a light attachment to one of the sockets and all was well for some 5 or loadshar hours.

Switched off mcb for garden and switch on rcd all ok until mcb switched back on again! There is no issue re moisture as this is all in the dry As mcb Has anyone seen this typ3 of thing before?

Alun LoadstzrApr 26, Not likely to be mcb at fault. Alun Tom and unphased like this. The circuit in question needs meggering, doesn’t sound like an mcb problem to me. Agree it won’t is highly unlikely! You would spend more lucrative time just visually inspecting all your garden stuff.

Switch the circuit off, and inspect all the termination points at the different accessory positions.

You should find water problems in at least one of them. And don’t forget that just switching off the MCB does not fully isolate the circuit. To do this you would also need to remove crzbtree neutral of the suspect circuit.

BazzaApr 26, RCD trip due to there being a difference in the current going out through the live and the loadstaf 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.

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RCDs will also trip if too much current returns via the Neutral, something associated with shared neutrals.

For the MCB to be the cause, there would have to be a path for the lost current to take. If it does not trip, the fault is with the wiring. May I thank you all for you contributions to my query.

Yes I think I was barking up the wrong tree with my mcb hard fault! I am glad you corrected me on cabtree issue! I am still intrigued as to why it is knocking off the RCB as absolutely nothing has touched the cable and the run from the cu to the the adjoining shed is all indoors.

I will now get an expert in and see what can be found.

Crabtree Loadstar 100 Amp Main Switch Disconnector 100a Double Pole 100SW2

Again thank you all for your help. Have you had any little furry visitors having a chew at the cable? The cable runs are enclosed in plastic trunking so it should not be affected by vermin!!!! Yes I have thought of it but discounted that as a cause!! Maybe the MCB has another circuit connected to it.

Perhaps the UV got to it? Thanks peter but no. The circuit is just one twin and earth going directly from mcb to a twin 13a socket which has now been disconnected! 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 Hi spinlondon thanks cable fully enclosed.

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