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1SDA062951R1 ABB T7L 1250 PR332/P LSIG 1250 A 3-Pole MCCB
ABB 1SDA062951R1 is a T7L 1250 three-pole moulded case circuit breaker with a 1250 A rating, PR332/P LSIG electronic protection and 120 kA breaking capacity at 400–415 V AC.
£10,843.69
Why Choose the ABB 1SDA062951R1 T7L 1250 Circuit Breaker?
The ABB 1SDA062951R1 is a high-performance Tmax T7L 1250 moulded case circuit breaker (MCCB) designed for protection and switching of high-current low-voltage electrical distribution systems. Equipped with the advanced PR332/P LSIG electronic trip unit, this three-pole breaker provides adjustable overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection for demanding industrial and commercial installations.
As part of the ABB SACE Tmax T series, the T7L 1250 combines high breaking performance with comprehensive electronic protection. Its L performance level provides an ultimate short-circuit breaking capacity of 120 kA at 400–415 V AC, while the rated uninterrupted current of 1250 A makes it suitable for major distribution boards, transformer protection and large industrial power systems.
The 1SDA062951R1 is supplied as a fixed three-pole circuit breaker with front terminals and a stored-energy operating mechanism. With a rated operational voltage of up to 690 V AC, a 1000 V insulation voltage and an 8 kV impulse withstand voltage, it provides dependable circuit protection in demanding low-voltage installations.
Key Advantages
- High-capacity 1250 A moulded case circuit breaker for industrial power distribution.
- 120 kA ultimate breaking capacity at 400–415 V AC for demanding fault conditions.
- Advanced PR332/P LSIG electronic trip unit with overload, short-time, instantaneous and earth-fault protection.
- Three-pole fixed construction with front terminal connections.
- Rated for operation at voltages up to 690 V AC.
- Stored-energy operating mechanism supports reliable switching of high-current circuits.
Key Features
- ABB SACE Tmax T7L 1250 series.
- 1250 A rated current.
- PR332/P LSIG solid-state electronic release.
- 120 kA Icu at 380–415 V AC.
- 120 kA Ics at 380–415 V AC.
- 20 kA short-time withstand current for 1 s.
- Adjustable overload protection range of 500–1250 A.
- Integrated earth-fault protection.
- Fixed mounting with front terminals and stored-energy operating mechanism.
Advanced Circuit Protection for Power Distribution
Moulded case circuit breakers such as the ABB Tmax T7L protect electrical distribution systems against overloads, short circuits and earth faults while also providing a means of isolating and switching high-current circuits. The high interrupting capacity of the T7L makes it particularly suitable for installations where prospective fault currents can be substantial.
The PR332/P LSIG electronic trip unit provides adjustable long-time, short-time, instantaneous and ground-fault protection, allowing protection settings to be coordinated with the characteristics of the connected system. This flexibility supports selective protection strategies in industrial switchboards, transformer-fed systems and other critical low-voltage distribution applications.
Typical Applications
- Main low-voltage distribution boards and switchboards.
- Transformer secondary protection.
- Industrial power distribution systems.
- Generator and installation protection.
- Manufacturing plants and process facilities.
- Commercial and infrastructure electrical distribution.
Technical Specifications
| Series | SACE Tmax T7 |
|---|---|
| Order code / MPN | 1SDA062951R1 |
| ABB product group | 310511-T-Max T4 - T8 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame size | T7 |
| Performance level | L |
| Rated current (In) | 1250 A |
| Rated uninterrupted current (Iu) | 1250 A |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Number of poles | 3 |
| Trip unit | PR332/P LSIG |
| Release type | Electronic / solid-state |
| Protection functions | L, S, I and G |
| Overload setting range | 500–1250 A |
| Ultimate short-circuit breaking capacity (Icu) at 400–415 V AC | 120 kA |
| Service short-circuit breaking capacity (Ics) at 400–415 V AC | 120 kA |
| Ultimate short-circuit breaking capacity (Icu) at 690 V AC | 50 kA |
| Service short-circuit breaking capacity (Ics) at 690 V AC | 37.5 kA |
| Rated short-time withstand current (Icw) | 20 kA for 1 s |
| Mounting type | Fixed circuit breaker |
| Terminal connection | Front terminals |
| Operating mechanism | Stored-energy mechanism |
| Dimensions (H × W × D) | 268 × 210 × 178 mm |
| Net weight | 11 kg |
Frequently Asked Questions
What is the ABB 1SDA062951R1 used for?
This circuit breaker is designed to protect and switch high-current low-voltage electrical distribution circuits in industrial, commercial and infrastructure installations.
What is the rated current of the ABB T7L 1250?
The 1SDA062951R1 has a rated current of 1250 A.
What protection functions does the PR332/P LSIG trip unit provide?
The PR332/P LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection.
What is the breaking capacity of the 1SDA062951R1?
The T7L version provides an ultimate short-circuit breaking capacity of 120 kA at 400–415 V AC.
How is this circuit breaker installed?
The breaker is supplied in a fixed three-pole configuration with front terminals and uses a stored-energy operating mechanism.
Trusted for Industrial Power Distribution
ABB SACE Tmax circuit breakers are widely used in industrial and commercial power distribution systems where dependable switching, high fault-breaking performance and configurable electronic protection are required.
