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1SDA074701R1 ABB XT1H 125 TMF 50A 3P UL/CSA MCCB
ABB 1SDA074701R1 is an XT1H 125 three-pole fixed moulded case circuit breaker with a 50 A TMF thermomagnetic trip unit, front terminals and a 65 kA interruption rating at 480 V AC.
£378.03
Why Choose the ABB XT1H 125 TMF 1SDA074701R1 Circuit Breaker?
The ABB XT1H 125 TMF 1SDA074701R1 is a compact three-pole moulded case circuit breaker (MCCB) designed for dependable low-voltage circuit protection in UL/CSA applications. Part of the ABB SACE Tmax XT1 range, it combines a 125 A frame with a 50 A TMF thermomagnetic trip unit for overload and short-circuit protection.
This XT1H circuit breaker is supplied in a fixed configuration with front terminals. Its TMF release has a rated current of 50 A and a 500 A instantaneous short-circuit release setting, providing straightforward thermal and magnetic protection without the configuration requirements of an electronic trip unit.
The XT1H high-breaking-capacity version provides a 65 kA interruption rating at 480 V AC and is rated for systems up to 600Y/347 V AC. Its compact three-pole construction, high fault-current capability and UL-certified design make the 1SDA074701R1 suitable for industrial, commercial and OEM electrical distribution equipment.
Key Advantages
- High-performance ABB SACE Tmax XT1H moulded case circuit breaker.
- 50 A TMF thermomagnetic trip unit provides overload and short-circuit protection.
- 65 kA interruption rating at 480 V AC for demanding fault-current applications.
- Three-pole configuration for three-phase electrical distribution circuits.
- 500 A instantaneous short-circuit release setting.
- Fixed mounting with front terminals for straightforward panel and switchboard integration.
Key Features
- ABB SACE Tmax XT1H 125 moulded case circuit breaker.
- 50 A rated current.
- 125 A frame size / rated uninterrupted current (Iu).
- Three-pole configuration.
- TMF thermomagnetic release.
- Thermal overload protection.
- Instantaneous magnetic short-circuit protection.
- 500 A instantaneous short-circuit release setting.
- H high-breaking-capacity performance level.
- 65 kA interruption rating at 480 V AC.
- Rated voltage of 600Y/347 V AC.
- Fixed construction with front terminals.
- Compact XT1 frame for space-conscious panel designs.
- UL-certified circuit breaker configuration.
High-Breaking-Capacity Thermomagnetic Protection
The TMF trip unit combines thermal overload protection with instantaneous magnetic short-circuit protection in a compact mechanical release. On the 1SDA074701R1, the breaker has a rated current of 50 A and an instantaneous short-circuit release setting of 500 A. This arrangement provides straightforward circuit protection without requiring electronic trip-unit programming or configuration.
The XT1H designation identifies the high-breaking-capacity version of the XT1 frame. With an interruption rating of 65 kA at 480 V AC, the breaker is designed for applications where available fault currents demand greater interruption capability than lower-performance XT1 variants while retaining the compact XT1 footprint.
Typical Applications
- Industrial low-voltage power distribution systems.
- Commercial electrical distribution panels.
- Three-phase feeder and branch circuit protection.
- Industrial machinery and equipment supplies.
- Applications with higher available short-circuit currents.
- UL/CSA switchboards and control panels.
- OEM electrical equipment and panel-building applications.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| ABB product group | T-Max XT 250 Range |
| ABB order code | 1SDA074701R1 |
| Alternate catalogue number | XT1HU3050AFF000XXX |
| Product type | Moulded case circuit breaker |
| Frame | XT1 |
| Frame rating | 125 A |
| Number of poles | 3 |
| Rated current | 50 A |
| Rated uninterrupted current (Iu) | 125 A |
| Trip unit | TMF thermomagnetic release |
| Overload release setting | 50 A |
| Instantaneous short-circuit release setting | 500 A |
| Short-circuit performance level | H |
| Interruption rating at 480 V AC | 65 kA |
| Rated voltage | 600Y/347 V AC |
| Mounting | Fixed |
| Main circuit connection | Bolt connection |
| Connection position | Front |
| Operating element | Toggle |
| Degree of protection | IP20 |
| Protection unit included | Yes |
| DIN rail mounting | Optional |
| Motor operator | Optional |
| Standard | UL |
| UL certification | Yes |
| UPC / EAN | 8015644786786 |
Frequently Asked Questions
What is the ABB 1SDA074701R1?
The ABB 1SDA074701R1 is an XT1H 125 three-pole moulded case circuit breaker with a 50 A TMF thermomagnetic release, fixed mounting and front terminals for UL/CSA applications.
What is the rated current of the ABB XT1H 1SDA074701R1?
The TMF protection unit has a rated current of 50 A, while the XT1 circuit breaker frame has a rated uninterrupted current (Iu) of 125 A.
What is the interruption rating of the ABB XT1H 125?
The H-performance 1SDA074701R1 has an interruption rating of 65 kA at 480 V AC.
What protection does the TMF 50-500 trip unit provide?
The TMF thermomagnetic release provides thermal overload protection and instantaneous magnetic short-circuit protection. This model has a rated current of 50 A and an instantaneous short-circuit release setting of 500 A.
How is the ABB 1SDA074701R1 installed?
The circuit breaker is designed for fixed mounting with front terminals, making it suitable for integration into compatible low-voltage switchboards, distribution panels and OEM equipment.
High-Performance Circuit Protection from ABB
ABB SACE Tmax XT moulded case circuit breakers combine compact construction, proven thermomagnetic protection and high short-circuit interruption capability for reliable industrial, commercial and OEM low-voltage power distribution.
