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1SDA058138R1 ABB T4L 250 UL/CSA TMA 150A 3P Moulded-Case Circuit Breaker
ABB 1SDA058138R1 is a three-pole Tmax T4L 250 UL/CSA moulded-case circuit breaker with a 150 A TMA thermomagnetic trip unit and adjustable 750–1500 A magnetic short-circuit protection.
£1,717.08
Why Choose the ABB T4L 250 1SDA058138R1 Moulded-Case Circuit Breaker?
The ABB 1SDA058138R1 is a Tmax T4L 250 three-pole moulded-case circuit breaker (MCCB) designed for reliable protection of low-voltage industrial and commercial electrical distribution systems. As part of the ABB Tmax T4–T8 range, this breaker combines the T4 250 frame with a TMA thermomagnetic trip unit and is designed for applications requiring UL/CSA-compliant circuit protection.
The breaker incorporates a TMA adjustable thermomagnetic trip unit, providing thermal overload protection together with magnetic short-circuit protection. Its overload setting is based around a 150 A rating, while the instantaneous magnetic protection is adjustable from 750–1500 A, enabling protection to be coordinated with the requirements of the connected circuit.
The T4L 250 is supplied in a three-pole fixed configuration and is intended for three-phase distribution applications. Its high-performance L breaking-capacity version, adjustable protection and established ABB Tmax construction make the 1SDA058138R1 suitable for switchboards, distribution panels, machinery supplies and industrial feeder protection.
Key Advantages
- Genuine ABB Tmax T4L 250 moulded-case circuit breaker.
- 150 A TMA thermomagnetic protection for low-voltage distribution circuits.
- Adjustable 750–1500 A instantaneous magnetic protection.
- Three-pole configuration for three-phase electrical systems.
- High-performance T4L breaking-capacity version.
- Designed for UL/CSA applications and industrial power distribution.
Key Features
- ABB Tmax T4L 250 circuit-breaker platform.
- TMA adjustable thermomagnetic trip unit.
- 150 A nominal trip-unit rating.
- 750–1500 A magnetic trip adjustment range.
- Three-pole (3P) construction.
- Fixed circuit-breaker configuration.
- Thermal overload and magnetic short-circuit protection.
- UL/CSA version for North American industrial applications.
Reliable Thermomagnetic Protection for Power Distribution
Moulded-case circuit breakers protect electrical conductors and connected equipment against potentially damaging overcurrents. The TMA trip unit in the ABB T4L 250 combines a thermal protection element for sustained overload conditions with an adjustable magnetic element that provides rapid operation during high-current short circuits.
For the 1SDA058138R1, the magnetic protection range of 750–1500 A allows the instantaneous trip threshold to be selected to suit the application. Combined with the robust Tmax T4 platform and three-pole construction, this makes the breaker a practical solution for protecting three-phase feeders, machinery circuits and industrial distribution equipment.
Typical Applications
- Industrial low-voltage power distribution.
- Three-phase feeder protection.
- Industrial machinery and equipment supplies.
- Main and sub-distribution switchboards.
- Commercial and industrial distribution panels.
- UL/CSA electrical installations requiring adjustable thermomagnetic protection.
Technical Specifications
| Series | Tmax T4–T8 |
|---|---|
| Order code | 1SDA058138R1 |
| Product type | Moulded-case circuit breaker (MCCB) |
| Frame | T4 |
| Frame size | 250 A |
| Breaking-capacity version | L |
| Trip unit | TMA thermomagnetic |
| Trip-unit rating | 150 A |
| Magnetic protection setting | 750–1500 A |
| Number of poles | 3 |
| Mounting / execution | Fixed |
| Protection functions | Thermal overload and magnetic short circuit |
| Certification version | UL/CSA |
| ABB product group | 310511-T-Max T4 - T8 |
Frequently Asked Questions
What is the ABB 1SDA058138R1 used for?
The ABB 1SDA058138R1 is a three-pole Tmax T4L 250 moulded-case circuit breaker used to provide overload and short-circuit protection in low-voltage electrical distribution systems.
What trip unit does the ABB 1SDA058138R1 use?
The breaker uses an ABB TMA adjustable thermomagnetic trip unit, combining thermal overload protection with magnetic short-circuit protection.
What is the current rating of the ABB 1SDA058138R1?
The TMA trip unit is rated at 150 A and is installed within the T4L 250 circuit-breaker platform.
What is the magnetic trip range of the ABB 1SDA058138R1?
The instantaneous magnetic protection is adjustable over a range of 750–1500 A, allowing the short-circuit trip threshold to be coordinated with the protected circuit.
How many poles does the ABB 1SDA058138R1 have?
The 1SDA058138R1 is a three-pole (3P) circuit breaker designed for applications including three-phase low-voltage distribution systems.
Trusted ABB Circuit Protection
ABB Tmax moulded-case circuit breakers provide dependable overload and short-circuit protection for industrial and commercial electrical distribution systems, combining robust breaker construction with coordinated trip-unit technology and a comprehensive range of installation accessories.
