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1SDA062956R1 ABB T7L1250 PR331/P-LSIG 1250A 4-Pole Circuit Breaker
ABB 1SDA062956R1 is a T7L1250 1250 A four-pole fixed moulded case circuit breaker with a PR331/P LSIG electronic trip unit providing long-time overload, short-time, instantaneous short-circuit and earth-fault protection.
£12,068.05
Why Choose the ABB T7L1250 PR331/P-LSIG 1250A 4-Pole Circuit Breaker?
The ABB T7L1250 PR331/P-LSIG is a high-performance moulded case circuit breaker (MCCB) designed for dependable protection and switching in high-current low-voltage power distribution systems. Part of the ABB SACE Tmax T7 series, this model combines a 1250 A rated current with the PR331/P electronic trip unit for comprehensive overcurrent and earth-fault protection.
The PR331/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. This LSIG protection combination helps safeguard conductors, switchgear and connected equipment against multiple fault conditions while supporting coordinated protection throughout the electrical distribution system.
This model is supplied in an authoritative 4-pole fixed configuration. The T7L frame is engineered for demanding high-current applications, while the four-pole arrangement and integrated earth-fault protection make the breaker particularly suitable for sophisticated industrial, commercial and infrastructure distribution systems.
Key Advantages
- High-performance ABB SACE Tmax T7 moulded case circuit breaker.
- 1250 A rated current for high-current power distribution.
- 4-pole configuration for three-phase distribution systems.
- Advanced PR331/P-LSIG electronic trip unit.
- Long-time protection against sustained overload conditions.
- Short-time and instantaneous protection against short-circuit faults.
- Integrated earth-fault protection.
- Electronic protection supports system coordination and selectivity.
- Fixed configuration for integration into low-voltage switchboards.
Key Features
- ABB SACE Tmax T7L series.
- 1250 A rated current.
- 4-pole construction.
- PR331/P electronic trip unit.
- LSIG protection functions.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Earth-fault protection.
- Electronic protection technology for dependable fault response.
- Fixed mounting configuration.
- Designed for demanding high-current low-voltage power distribution.
Comprehensive Electronic Protection for Power Distribution
Moulded case circuit breakers such as the ABB Tmax T7 provide dependable switching, isolation and protection against damaging overcurrent conditions in low-voltage electrical distribution systems. Electronic trip technology enables accurate fault detection and allows protection characteristics to support coordinated operation across the electrical network.
The PR331/P-LSIG release combines long-time overload, short-time short-circuit and instantaneous short-circuit protection with an integrated earth-fault function. Together with the T7L frame and four-pole construction, this provides comprehensive protection for high-current distribution systems requiring advanced electronic fault management.
Typical Applications
- Industrial low-voltage switchboards.
- Main and sub-main power distribution systems.
- High-current feeder protection.
- Three-phase power distribution systems.
- Manufacturing and process facilities.
- Commercial and infrastructure electrical installations.
- Distribution systems requiring integrated earth-fault protection.
Technical Specifications
| Series | SACE Tmax T7 |
|---|---|
| ABB order code | 1SDA062956R1 |
| ABB product group | 310511-T-Max T4 - T8 |
| Product type | Moulded case circuit breaker |
| Frame | T7L |
| Rated current | 1250 A |
| Number of poles | 4 |
| Trip unit | PR331/P |
| Release type | Electronic |
| Protection functions | LSIG |
| Long-time protection (L) | Overload protection |
| Short-time protection (S) | Short-circuit protection |
| Instantaneous protection (I) | Short-circuit protection |
| Earth-fault protection (G) | Included |
| Mounting | Fixed |
Frequently Asked Questions
What is the ABB 1SDA062956R1 used for?
The ABB 1SDA062956R1 is a Tmax T7L moulded case circuit breaker designed for switching and protecting high-current low-voltage power distribution circuits.
What is the rated current of the ABB T7L1250 PR331/P-LSIG?
The circuit breaker has a rated current of 1250 A.
What protection functions does the PR331/P-LSIG trip unit provide?
The PR331/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
How many poles does the ABB 1SDA062956R1 have?
The breaker has a 4-pole configuration, making it suitable for three-phase distribution systems requiring four-pole switching and protection.
How is the ABB 1SDA062956R1 installed?
The T7L1250 is supplied in a fixed configuration for integration into low-voltage switchboards and power-distribution systems.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax circuit breakers are widely used in industrial, commercial and infrastructure power systems where dependable electronic protection, earth-fault protection and robust high-current distribution performance are required.
