ABB MCCB A1N 125 TMF 40-400 1-Pole 40A 25kA
The ABB A1N 125 TMF 40-400 is a 1-pole MCCB with 25kA breaking capacity, adjustable thermal-magnetic trip from 40–400A (set at 40A), designed for high-current single-pole circuit protection in UAE industrial and commercial switchgear. Its 25kA fault withstand makes it suitable for high fault-level incoming protection applications.
Key Features
- 1-pole MCCB with 25kA breaking capacity
- Adjustable TMF trip unit: 40–400A
- High breaking capacity for industrial switchgear applications
- Compact MCCB design for space-efficient panel installation
- Genuine ABB Formula A1 MCCB quality
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Series |
A1N 125 |
| Trip Unit |
TMF 40-400 |
| Poles |
1 |
| Set Current |
40A |
| Breaking Capacity |
25kA |
| Voltage |
415V AC |
Applications
- Single-pole high fault-level circuit protection
- Industrial switchgear and MCC applications
- Sub-main feeder protection in commercial buildings
- High fault-level panel incoming 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 1-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.
