ABB A2N 250 TMF 160A 3-Pole Moulded Case Circuit Breaker
The A2N 250 TMF is a fixed 3-pole moulded case circuit breaker (MCCB) from ABB's SACE Formula range, rated at 160A with a thermomagnetic (TMF) release adjustable across the 160-1600A band. Fitted with front terminals, it is built for protection of feeders and main circuits in commercial and industrial distribution boards, including panel builds and switchroom upgrades across the UAE.
Key Features
- 3-pole fixed MCCB with 160A rated current (250A frame) for main and feeder circuit protection
- TMF thermomagnetic release provides combined overload and short-circuit protection
- High breaking capacity of up to 36kA (Icu) at 415V AC, suitable for demanding fault levels
- Front terminal connection for straightforward installation and maintenance access in panels
- Genuine ABB Formula quality — rated for 10,000 mechanical and 4,000 electrical operating cycles
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
A2N 250 TMF 160-1600 3p F F |
| Type |
Moulded Case Circuit Breaker (MCCB) |
| Poles |
3 |
| Rated Current (In) |
160A |
| Rated Uninterrupted Current (Iu) |
250A |
| Release Type |
TMF (Thermomagnetic) |
| Rated Operational Voltage |
550V AC / 250V DC |
| Rated Insulation Voltage (Ui) |
690V |
| Rated Impulse Withstand Voltage (Uimp) |
6kV |
| Breaking Capacity (Icu) at 415V AC |
36kA |
| Breaking Capacity (Ics) at 415V AC |
18kA |
| Terminal Connection |
Front |
| Standards |
IEC |
Applications
- Main incomer or feeder protection in commercial and industrial distribution boards
- Protection of HVAC plant and large motor circuits in UAE commercial buildings
- Sub-main protection in panel builder assemblies and switchroom upgrades
- Circuit protection in industrial facilities and MEP contractor installations across the UAE
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.
-
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.
