Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA075157R1 ABB XT4N 250 TMF 50-500 3P Moulded Case Circuit Breaker
ABB 1SDA075157R1 is an XT4N 250 three-pole fixed moulded case circuit breaker with a 50 A TMF thermomagnetic trip unit, 500 A magnetic trip level, front terminals and UL/CSA specification.
£463.16
Why Choose the ABB XT4N 250 TMF 50-500 3P Circuit Breaker?
The ABB XT4N 250 TMF 50-500 3P, order code 1SDA075157R1, is a compact and dependable moulded case circuit breaker (MCCB) designed for protection and isolation in low-voltage electrical distribution systems. As part of the advanced ABB SACE Tmax XT series, it combines the XT4 frame with a TMF thermomagnetic trip unit for reliable overload and short-circuit protection.
This circuit breaker features a 50 A rated current and a 500 A magnetic trip level. Its N breaking-capacity class provides an interruption rating of 25 kA at 480 V AC, making it suitable for a wide range of industrial, commercial and OEM power-distribution applications.
The XT4N 250 TMF 50-500 is a three-pole, fixed circuit breaker with front terminals and is rated for operation at up to 600 V. Designed for UL/CSA applications, its compact XT4 construction enables straightforward integration into switchboards, distribution panels and industrial control equipment.
Key Advantages
- Compact ABB SACE Tmax XT moulded case circuit breaker for low-voltage distribution.
- 50 A TMF thermomagnetic protection for overload and short-circuit protection.
- 500 A magnetic trip level for rapid operation under high fault-current conditions.
- 25 kA interruption rating at 480 V AC.
- Three-pole configuration for three-phase electrical distribution systems.
- Fixed mounting with front terminals for practical switchboard integration.
- Rated for operation at up to 600 V and specified for UL/CSA applications.
Key Features
- ABB SACE Tmax XT4N frame.
- 250 A frame size.
- TMF thermomagnetic trip unit.
- 50 A rated current.
- 500 A magnetic trip level.
- N breaking-capacity class: 25 kA at 480 V AC.
- 600 V rated voltage.
- 3-pole configuration.
- Fixed execution with front terminals.
- UL specification and certification.
Reliable Circuit Protection for Industrial Power Distribution
Moulded case circuit breakers such as the ABB XT4N protect electrical distribution circuits by interrupting current when overload or short-circuit conditions occur. The TMF thermomagnetic trip unit combines thermal overload protection with magnetic short-circuit protection, providing dependable circuit protection without requiring an electronic trip unit.
The XT4N platform is designed for compact installation in modern low-voltage distribution equipment. This three-pole version combines fixed mounting and front terminals with a 600 V rating and N-class interrupting performance, making it well suited to permanent installation in industrial switchboards, distribution panels and OEM electrical equipment.
Typical Applications
- Industrial low-voltage distribution boards.
- Commercial electrical distribution systems.
- Three-phase feeder and branch-circuit protection.
- Machine and production-line electrical panels.
- Switchboards and power distribution assemblies.
- OEM equipment requiring UL/CSA circuit protection.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| ABB order code | 1SDA075157R1 |
| Product type | Moulded case circuit breaker |
| Frame | XT4N |
| Frame size | 250 A |
| Trip unit | TMF thermomagnetic |
| Rated current | 50 A |
| Magnetic trip level | 500 A |
| Rated voltage | 600 V |
| Interruption rating | N, 25 kA at 480 V AC |
| Number of poles | 3 |
| Mounting execution | Fixed |
| Terminal arrangement | Front terminals |
| Standards / certification | UL / UL/CSA specification |
Frequently Asked Questions
What is the ABB 1SDA075157R1 used for?
The ABB 1SDA075157R1 is a three-pole moulded case circuit breaker designed to protect and isolate low-voltage electrical distribution circuits against overload and short-circuit conditions.
What trip unit does the ABB XT4N 250 1SDA075157R1 use?
It uses an ABB TMF thermomagnetic trip unit, providing thermal overload protection and magnetic short-circuit protection.
What is the rated current of this XT4N circuit breaker?
This configuration has a rated current of 50 A and a magnetic trip level of 500 A.
What is the interruption rating of the XT4N 250 TMF 50-500?
The N-class XT4 circuit breaker has an interruption rating of 25 kA at 480 V AC.
How many poles does the ABB 1SDA075157R1 have?
This model has three poles and is designed for three-phase electrical distribution applications.
How is the ABB XT4N 250 1SDA075157R1 installed?
It is supplied in a fixed execution with front terminals, making it suitable for permanent installation in switchboards, distribution panels and industrial electrical assemblies.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax XT moulded case circuit breakers are widely used by panel builders, electrical engineers, OEMs and industrial operators for dependable low-voltage circuit protection, isolation and power distribution.
