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1SDA074656R1 ABB XT1N 125 TMF 50-500 4P Fixed MCCB UL/CSA
ABB 1SDA074656R1 is an XT1N 125 four-pole fixed moulded case circuit breaker with a 50 A TMF thermal-magnetic trip unit, 500 A magnetic trip threshold, front terminals and UL/CSA configuration.
£637.00
Why Choose the ABB XT1N 125 TMF 50-500 4P MCCB?
The ABB XT1N 125, order code 1SDA074656R1, is a four-pole moulded case circuit breaker (MCCB) designed for dependable protection and isolation of low-voltage electrical distribution circuits. As part of the ABB SACE Tmax XT1 family, this version combines a 125 A frame with a 50 A thermal-magnetic trip setting and fixed installation configuration.
The breaker is equipped with an ABB TMF fixed thermal-magnetic trip unit, providing thermal overload protection and magnetic short-circuit protection. Its specified 50–500 A protection configuration combines a 50 A rated thermal element with a 500 A instantaneous magnetic trip threshold, providing straightforward circuit protection without requiring an electronic trip unit.
This model has a four-pole configuration and fixed mounting with front terminals. The UL/CSA version is intended for applications requiring the corresponding North American certification configuration, making it suitable for industrial machinery, control panels and power-distribution equipment built for UL/CSA markets.
Key Advantages
- Compact four-pole moulded case circuit breaker for low-voltage distribution.
- 50 A TMF thermal-magnetic protection with 500 A magnetic trip threshold.
- 125 A XT1 frame provides a compact platform for distribution protection.
- Fixed thermal and magnetic protection provides straightforward, dependable operation.
- Fixed mounting with front terminals supports conventional panel installation.
- UL/CSA configuration for applicable North American electrical equipment.
Key Features
- ABB SACE Tmax XT1N 125 circuit breaker.
- Four-pole configuration.
- TMF fixed thermal-magnetic trip unit.
- 50 A rated current.
- 500 A instantaneous magnetic trip setting.
- Fixed installation.
- Front terminals.
- UL/CSA version.
Reliable Thermal-Magnetic Circuit Protection
Thermal-magnetic moulded case circuit breakers provide two complementary forms of protection. The thermal element responds to sustained overload conditions, while the magnetic element operates rapidly when a high short-circuit current exceeds its specified instantaneous threshold.
The ABB XT1N 125 1SDA074656R1 combines these functions in a compact four-pole breaker with a 50 A thermal rating and 500 A magnetic threshold. Its fixed front-terminal configuration is suited to permanent installation in electrical panels, switchboards and industrial equipment.
Typical Applications
- Industrial low-voltage distribution panels.
- Machinery and equipment electrical panels.
- Commercial power distribution systems.
- Four-pole feeder and branch-circuit protection.
- OEM electrical equipment and control panels.
- UL/CSA-oriented industrial installations.
Technical Specifications
| Series | SACE Tmax XT1 |
|---|---|
| ABB order code | 1SDA074656R1 |
| Product type | Moulded case circuit breaker |
| Frame | XT1N 125 |
| Frame current | 125 A |
| Rated current | 50 A |
| Trip unit | TMF fixed thermal-magnetic |
| Magnetic trip threshold | 500 A |
| Number of poles | 4 |
| Mounting | Fixed |
| Terminal configuration | Front terminals |
| Certification configuration | UL/CSA |
| ABB product group | 310511-T-Max T4 - T8 |
Frequently Asked Questions
What is the ABB XT1N 125 1SDA074656R1 used for?
It is a four-pole moulded case circuit breaker used for overload and short-circuit protection in compatible low-voltage electrical distribution systems.
What is the current rating of this ABB XT1N breaker?
This version uses a 50 A TMF thermal-magnetic trip unit in the XT1N 125 frame.
What does the 50-500 specification mean?
It identifies the 50 A rated thermal protection and 500 A instantaneous magnetic trip threshold of the TMF trip unit.
How many poles does the ABB 1SDA074656R1 have?
The breaker has a four-pole configuration.
How is this XT1N 125 breaker installed?
This model is a fixed breaker with front terminals and is supplied in the specified UL/CSA configuration.
Trusted by Electrical Distribution Professionals
ABB SACE Tmax XT moulded case circuit breakers provide compact and dependable protection for industrial, commercial and OEM electrical distribution systems, with coordinated trip units and installation accessories for a wide range of applications.
