ABB MCCB XT5N 400 TMA 400-4000 3-Pole
The ABB XT5N 400 TMA 400-4000 3P is a high-capacity 3-pole MCCB with a 400–4000A TMA trip unit and 36kA breaking capacity at 415V. It provides main incoming protection for the largest UAE industrial facilities, substation switchgear, and critical infrastructure where premium high-current MCCB protection is specified.
Key Features
- 3-pole MCCB with 400–4000A TMA trip for maximum current applications
- 36kA breaking capacity at 415V
- Heavy-duty main incoming switchgear protection
- Fixed front robust Tmax XT5 construction
- Genuine ABB Tmax XT5N quality
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
XT5N 400 TMA 400-4000 3p F F |
| Poles |
3 |
| Trip Unit |
TMA 400–4000A |
| Breaking Capacity |
36kA @ 415V |
Applications
- Very high-current main incoming switchgear protection
- Industrial substation and primary distribution incoming
- Large process plant and critical facility protection
- Major commercial building main distribution protection
FAQ
-
What's the difference between an MCB and an MCCB?
An MCB (miniature circuit breaker) is typically rated up to 100A with a fixed, non-adjustable trip and lower breaking capacity, used for final circuits. An MCCB (moulded case circuit breaker) is built for higher currents and fault levels, and is used for main incomers, sub-mains, and feeder protection where an MCB's rating or breaking capacity would be insufficient.
-
When do I need an MCCB instead of an MCB?
Use an MCCB where the prospective fault current or load current exceeds what an MCB is rated to handle safely — typically at the main incomer or major sub-main level of a commercial or industrial distribution board.
-
How many poles do I need?
This is a 3-pole device, sized for the corresponding single or three-phase supply arrangement.
-
Does this MCCB have an adjustable trip setting?
Check the specific trip unit type in the Technical Specifications table above — thermal-magnetic MCCBs may have a fixed or adjustable trip range depending on the model; an electronic trip unit typically offers configurable protection curves.
-
Can I install this myself?
No. MCCBs are installed in distribution boards and panels by a licensed electrician, in line with UAE wiring regulations.
