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1SDA062948R1 ABB T7L 1250 PR331/P LSIG 1250 A 3-Pole Moulded Case Circuit Breaker
ABB T7L 1250 PR331/P LSIG 3-pole moulded case circuit breaker with a 1250 A rated current, fixed front-terminal construction, stored-energy operating mechanism, comprehensive LSIG electronic protection and 120 kA breaking capacity at 400 V AC.
£10,090.16
Why Choose the ABB T7L 1250 PR331/P LSIG Moulded Case Circuit Breaker?
The ABB T7L 1250 PR331/P LSIG is a high-performance 3-pole moulded case circuit breaker (MCCB) designed for protection and control of demanding low-voltage power distribution systems. Part of the proven ABB Tmax T7 series, it combines a 1250 A rated uninterrupted current with comprehensive electronic protection and high short-circuit breaking capability.
Equipped with the PR331/P LSIG solid-state electronic release, the T7L 1250 provides long-time, short-time, instantaneous and earth-fault protection functions. Adjustable protection settings support effective coordination with cables, switchgear and downstream equipment in high-current industrial and commercial distribution networks.
With an ultimate short-circuit breaking capacity of 120 kA at 400 V AC, a 690 V AC rated voltage, fixed construction, front terminals and a stored-energy operating mechanism, the T7L 1250 is engineered for high-capacity switchboards where dependable fault interruption and comprehensive electronic protection are required.
Key Advantages
- High-performance ABB Tmax T7 moulded case circuit breaker.
- 1250 A rated uninterrupted current for high-capacity distribution circuits.
- 120 kA Icu at 400 V AC for demanding fault conditions.
- PR331/P LSIG electronic trip unit for comprehensive circuit protection.
- Long-time, short-time, instantaneous and integrated earth-fault protection.
- 500–1250 A adjustable overload release range.
- 3-pole fixed construction for three-phase power distribution.
- Front terminals and stored-energy operating mechanism support switchboard integration.
Key Features
- ABB Tmax T7 series.
- T7L 1250 performance level.
- 1250 A rated uninterrupted current.
- 3-pole construction.
- PR331/P LSIG solid-state electronic release.
- Long-time overload protection.
- Short-time delayed short-circuit protection.
- Instantaneous short-circuit protection.
- Integrated earth-fault protection.
- 500–1250 A overload release adjustment range.
- 750–12500 A short-time delayed short-circuit adjustment range.
- 1875–15000 A instantaneous short-circuit adjustment range.
- 120 kA ultimate short-circuit breaking capacity at 400 V AC, 50 Hz.
- Fixed mounting with front terminals.
- Stored-energy operating mechanism.
Reliable Circuit Protection for Power Distribution
Moulded case circuit breakers such as the ABB Tmax T7 protect low-voltage electrical distribution circuits against overload, short-circuit and earth-fault conditions. The electronic protection unit monitors circuit current and initiates interruption when configured protection thresholds are exceeded, helping protect conductors, switchgear and connected electrical equipment.
The T7L 1250 combines a high 1250 A current rating and 120 kA breaking capacity at 400 V AC with the flexibility of PR331/P LSIG electronic protection. Its long-time, short-time, instantaneous and earth-fault functions enable coordinated protection in demanding three-phase distribution systems.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Main incomer and feeder circuit protection.
- High-current three-phase power distribution systems.
- Commercial and infrastructure electrical distribution.
- Manufacturing and process-industry electrical systems.
- Power distribution centres and switchgear assemblies.
- High-fault-level installations requiring earth-fault protection.
Technical Specifications
| Series | Tmax T7 |
|---|---|
| ABB order code | 1SDA062948R1 |
| Product type | Moulded case circuit breaker |
| Rated uninterrupted current (Iu) | 1250 A |
| Rated voltage | 690 V AC |
| Number of poles | 3 |
| Trip unit | PR331/P |
| Protection functions | LSIG |
| Ultimate short-circuit breaking capacity (Icu) | 120 kA at 400 V AC, 50 Hz |
| Overload release adjustment range | 500–1250 A |
| Short-time delayed short-circuit adjustment range | 750–12500 A |
| Instantaneous short-circuit adjustment range | 1875–15000 A |
| Earth-fault protection | Integrated |
| Mounting type | Fixed |
| Terminal configuration | Front terminals |
| Main circuit connection | Bolted connection |
| Operating mechanism | Stored-energy mechanism |
| Degree of protection | IP20 |
| Product net dimensions (W × H × D) | 210 × 268 × 178 mm |
| Product net weight | 11 kg |
| ABB product group | 310511-T-Max T4 - T8 |
Frequently Asked Questions
What is the ABB T7L 1250 PR331/P LSIG used for?
This moulded case circuit breaker is designed to protect high-current low-voltage distribution circuits against overload, short-circuit and earth-fault conditions in demanding industrial and commercial electrical systems.
What is the rated current of ABB order code 1SDA062948R1?
The ABB T7L 1250 1SDA062948R1 has a rated uninterrupted current of 1250 A, with an adjustable overload release range of 500–1250 A.
What is the breaking capacity of the ABB T7L 1250 1SDA062948R1?
The breaker has an ultimate short-circuit breaking capacity of 120 kA at 400 V AC, 50 Hz.
Which trip unit is fitted to the ABB T7L 1250 1SDA062948R1?
This model is equipped with the ABB PR331/P LSIG solid-state electronic release, providing long-time, short-time, instantaneous and earth-fault protection.
Does the ABB T7L 1250 1SDA062948R1 provide earth-fault protection?
Yes. The PR331/P LSIG protection unit incorporates earth-fault protection in addition to long-time, short-time and instantaneous protection functions.
How is the ABB 1SDA062948R1 configured for installation?
ABB order code 1SDA062948R1 is a 3-pole fixed circuit breaker with front terminals and a stored-energy operating mechanism.
Trusted by Electrical Professionals Worldwide
ABB Tmax moulded case circuit breakers are widely used by electrical engineers, panel builders and industrial operators for dependable circuit protection, power distribution and control in demanding low-voltage installations.
