1SDA062932R1 ABB T7L 1250 PR331/P-LSIG 1250 A 3-Pole MCCB

Why Choose the ABB 1SDA062932R1 T7L 1250 Circuit Breaker?

The ABB 1SDA062932R1, extended product type T7L 1250 PR331/P LSIG In=1250A 3p F F, is a high-performance moulded case circuit breaker (MCCB) designed for protection and switching in high-current low-voltage electrical distribution systems. As part of the established ABB SACE Tmax T7 series, it combines a 1250 A rated current with an advanced PR331/P-LSIG electronic trip unit for comprehensive overload, short-circuit and earth-fault protection.

This T7L configuration is a fixed three-pole circuit breaker with front terminals, making it suitable for demanding industrial switchboards and power distribution assemblies. The PR331/P-LSIG solid-state release provides long-time overload, short-time delayed short-circuit, instantaneous short-circuit and ground-fault protection, enabling protection characteristics to be configured for effective coordination within the electrical installation.

With a rated uninterrupted current of 1250 A and a rated ultimate short-circuit breaking capacity of 120 kA at 380–415 V AC, the T7L 1250 is engineered for installations with high prospective fault currents. Its robust Tmax construction, electronic protection and fixed front-terminal arrangement make it well suited to industrial plants, infrastructure and large low-voltage power distribution systems.

Key Advantages

• High-performance ABB SACE Tmax T7L moulded case circuit breaker for demanding power distribution applications.
• 1250 A rated uninterrupted current for high-current electrical systems.
• 120 kA ultimate breaking capacity at 380–415 V AC for installations with high prospective fault currents.
• Advanced PR331/P-LSIG electronic trip unit for comprehensive circuit protection.
• Provides long-time, short-time, instantaneous and ground-fault protection.
• Three-pole fixed configuration with front terminals for switchboard installation.
• Adjustable protection characteristics support selective and coordinated electrical distribution systems.

Key Features

• ABB SACE Tmax T7L 1250 series MCCB.
• 1250 A rated current.
• PR331/P-LSIG solid-state electronic release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated ground-fault protection.
• 120 kA Icu at 380–415 V AC.
• Three-pole construction.
• Fixed breaker installation format.
• Front terminals for main power connections.
• Overload protection adjustable from 0.4–1 × In.
• Instantaneous protection adjustable up to 15 × In.
• Ground-fault protection adjustable from 0.2–1 × In.

Comprehensive Protection for High-Current Power Distribution

Moulded case circuit breakers such as the ABB Tmax T7L protect low-voltage electrical distribution systems against excessive currents caused by overloads and short circuits. The PR331/P-LSIG trip unit adds ground-fault protection, helping provide a comprehensive protection solution for cables, switchgear and connected electrical equipment in demanding distribution networks.

The electronic LSIG protection functions allow the breaker characteristics to be coordinated with other protection devices throughout the electrical system. Combined with the high breaking capacity of the T7L platform, the 1SDA062932R1 provides a robust solution for industrial power systems requiring configurable protection, high fault-current interruption capability and dependable operation.

Typical Applications

• Main and sub-main low-voltage distribution boards.
• Industrial switchboards and power distribution assemblies.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Transformer secondary and feeder protection.
• High-current machinery and production systems.
• Electrical networks requiring ground-fault protection and high short-circuit breaking capacity.