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1SDA074748R1 ABB XT2N 125 TMF 20-400 4P UL/CSA MCCB
ABB 1SDA074748R1 is an XT2N 125 four-pole fixed moulded case circuit breaker with a 20 A TMF thermomagnetic trip unit, front terminals, a 400 A instantaneous short-circuit setting and 25 kA breaking capacity at 400 V AC.
£372.59
Why Choose the ABB XT2N 125 TMF 1SDA074748R1 Circuit Breaker?
The ABB XT2N 125 TMF 1SDA074748R1 is a compact four-pole moulded case circuit breaker (MCCB) designed for dependable low-voltage power distribution protection in UL/CSA applications. Part of the ABB SACE Tmax XT2 range, it combines a 125 A frame with a 20 A TMF thermomagnetic trip unit for overload and short-circuit protection.
This XT2N circuit breaker is supplied in a fixed configuration with front terminals. Its TMF release has a rated current of 20 A and an instantaneous magnetic short-circuit setting of 400 A, providing straightforward thermal and magnetic protection without requiring an electronic trip unit.
The XT2N is the 25 kA performance version of the XT2 frame and is designed for UL/CSA power distribution applications. Its four-pole construction, compact fixed design and front bolt connections make the 1SDA074748R1 suitable for industrial, commercial and OEM systems requiring protection and switching across three phases and a neutral pole.
Key Advantages
- Compact ABB SACE Tmax XT2N moulded case circuit breaker.
- 20 A TMF thermomagnetic trip unit provides overload and short-circuit protection.
- 400 A instantaneous magnetic short-circuit setting.
- 25 kA short-circuit breaking capacity at 400 V AC.
- Four-pole configuration for three-phase systems requiring neutral switching.
- Fixed mounting with front bolt terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax XT2N 125 moulded case circuit breaker.
- 20 A rated trip-unit current.
- 125 A rated uninterrupted current (Iu) for the XT2 frame.
- Four-pole configuration.
- TMF thermomagnetic release.
- Thermal overload protection.
- Instantaneous magnetic short-circuit protection.
- 400 A instantaneous short-circuit release setting.
- N short-circuit performance level.
- 25 kA Icu at 400 V AC, 50 Hz.
- Rated voltage up to 600 V.
- Fixed construction with front bolt connections.
- IP20 degree of protection.
- Optional motor operating mechanism capability.
- Optional DIN rail mounting capability.
Thermomagnetic Protection for UL/CSA Distribution Systems
The TMF release combines thermal overload protection with instantaneous magnetic short-circuit protection in a compact mechanical trip unit. On the 1SDA074748R1, the thermal protection is rated at 20 A, while the instantaneous magnetic release operates at a 400 A setting. This arrangement provides straightforward circuit protection without electronic trip-unit programming or configuration.
The XT2N designation identifies the N-performance version of the XT2 frame, with a rated short-circuit breaking capacity of 25 kA at 400 V AC. Combined with four-pole construction, fixed mounting and front connections, this makes the breaker a practical solution for power distribution systems where all three phase conductors and the neutral require switching through a common MCCB.
Typical Applications
- Industrial low-voltage power distribution systems.
- Commercial electrical distribution panels.
- Three-phase and neutral feeder protection.
- Industrial machinery and equipment supplies.
- UL/CSA switchboards and control panels.
- Transformer and general plant circuit protection.
- OEM electrical equipment and panel-building applications.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| ABB product group | T-Max XT 250 Range |
| ABB order code | 1SDA074748R1 |
| Product type | Moulded case circuit breaker |
| Frame / size | XT2N 125 |
| Number of poles | 4 |
| Rated trip-unit current | 20 A |
| Rated uninterrupted current (Iu) | 125 A |
| Trip unit | TMF thermomagnetic release |
| Overload release setting | 20 A |
| Instantaneous short-circuit release setting | 400 A |
| Short-circuit performance level | N |
| Rated short-circuit breaking capacity (Icu) at 400 V AC, 50 Hz | 25 kA |
| Rated voltage | Up to 600 V |
| Mounting | Fixed |
| Main circuit connection | Bolt connection |
| Connection position | Front |
| Operating element | Toggle |
| Degree of protection | IP20 |
| Protection unit included | Yes |
| Integrated earth-fault protection | No |
| Integrated motor operator | No |
| Motor operator | Optional |
| DIN rail mounting | Optional |
| Power loss | Approx. 1.6 W |
| Net weight | Approx. 1.55 kg |
| Country of origin | Italy |
| EAN | 8015644787257 |
| Customs tariff / HS code | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA074748R1?
The ABB 1SDA074748R1 is an XT2N 125 four-pole moulded case circuit breaker with a 20 A TMF thermomagnetic release, fixed mounting and front terminals for UL/CSA applications.
What is the rated current of the ABB XT2N 1SDA074748R1?
The TMF trip unit has a rated current of 20 A, while the XT2 circuit breaker frame has a rated uninterrupted current (Iu) of 125 A.
What is the short-circuit breaking capacity of the ABB XT2N 125?
The N-performance XT2N 125 has a rated short-circuit breaking capacity of 25 kA at 400 V AC, 50 Hz.
What protection does the TMF 20-400 trip unit provide?
The TMF thermomagnetic release provides thermal overload protection at 20 A and instantaneous magnetic short-circuit protection with a 400 A setting.
How is the ABB 1SDA074748R1 installed?
The circuit breaker is designed for fixed mounting and uses front bolt connections for integration into compatible low-voltage switchboards, distribution panels and OEM equipment.
Reliable UL/CSA Circuit Protection from ABB
ABB SACE Tmax XT moulded case circuit breakers combine compact construction, proven thermomagnetic protection and dependable short-circuit performance for industrial, commercial and OEM low-voltage power distribution systems.
