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- 400Amp 4-Pole MCCB – YEM3Z
400Amp 4-Pole MCCB – YEM3Z
YEM3Z4004 is a moulded case circuit breaker (MCCB), rated 400 A with 4 poles for distribution boards and generator output protection.
About this part
MCCBs cover the range above miniature breakers, from around 63 A up to 800 A and beyond, and are chosen by current rating, number of poles and breaking capacity.
When to replace it
- Installing a generator output breaker
- Upgrading a distribution board
- A breaker that trips without cause or will not reset
Before you order
Match the rating to the cable and the load, and choose 3 or 4 poles to suit the installation. Breakers must be installed by a qualified electrician.
If the old part has no readable number, send us a clear photo with the engine or alternator nameplate and we will identify it before you buy.
Questions
What is the difference between an MCB and an MCCB?
MCBs are small DIN-rail breakers for final circuits up to about 63 A. MCCBs are larger, handle higher currents and fault levels, and often have adjustable trip settings.
Specifications
| Part number | YEM3Z4004 |
|---|---|
| Brand | IEP Powerproducts |
| Range | Adjustable MCCBs |
| Current rating | 400 A |
| Poles | 4 |
Not sure it fits?
Send us the number on your old part, or a photo with the engine or alternator nameplate, and we'll confirm the match.
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