1SDA062946R1 ABB T7L 1250 PR231/P-LS/I 1250 A 3-Pole MCCB

Why Choose the ABB 1SDA062946R1 T7L 1250 Circuit Breaker?

The ABB 1SDA062946R1, extended product type T7L 1250 PR231/P LS/I In=1250A 3p F F M, 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 uninterrupted current with a PR231/P-LS/I electronic trip unit for dependable overload and short-circuit protection.

This T7L configuration is a fixed three-pole circuit breaker with front terminals and a stored-energy operating mechanism, making it suitable for demanding industrial switchboards and power distribution assemblies. The PR231/P-LS/I solid-state release provides adjustable overload, short-time delayed short-circuit and instantaneous short-circuit protection, allowing the breaker characteristics to be coordinated with the requirements of 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.
• PR231/P-LS/I electronic trip unit providing adjustable overload and short-circuit protection.
• 500–1250 A overload release adjustment range for flexible circuit protection.
• Three-pole fixed configuration with front terminals for switchboard installation.
• Stored-energy operating mechanism with optional motor drive for remote or automated operation.

Key Features

• ABB SACE Tmax T7L 1250 series MCCB.
• 1250 A rated uninterrupted current.
• PR231/P-LS/I solid-state electronic release.
• Adjustable overload, short-time delayed and instantaneous short-circuit protection.
• 120 kA Icu at 380–415 V AC.
• Three-pole construction.
• Fixed circuit breaker installation format.
• Front terminals with bolted main-circuit connections.
• Overload release adjustable from 500–1250 A.
• Short-time delayed short-circuit release adjustable from 1250–12500 A.
• Instantaneous short-circuit release adjustable from 1250–12500 A.
• Rated insulation voltage of 1000 V and impulse withstand voltage of 8 kV.

Reliable 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. By interrupting dangerous fault currents, the breaker helps protect cables, switchgear and connected equipment while supporting the safety and availability of the electrical installation.

The PR231/P-LS/I electronic trip unit provides adjustable overload, short-time delayed and instantaneous short-circuit protection, enabling the breaker characteristics to be coordinated with other protective devices in the distribution network. Combined with the high breaking capacity of the T7L platform, the 1SDA062946R1 provides a robust solution for industrial power systems requiring configurable protection and dependable high-current fault interruption.

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 with high prospective short-circuit currents.