1SDA062954R1 ABB T7L 1250 PR231/P LS/I 1250A 4P Circuit Breaker

Why Choose the ABB T7L 1250 PR231/P LS/I 1250A Circuit Breaker?

The ABB 1SDA062954R1, designated T7L 1250 PR231/P LS/I In=1250A 4p F F M, is a high-performance four-pole moulded-case circuit breaker (MCCB) designed for protection and switching in demanding low-voltage power distribution systems. Part of the established ABB SACE Tmax T7 series, it combines a rated uninterrupted current of 1250 A with a PR231/P LS/I solid-state electronic trip unit for adjustable overload and short-circuit protection.

The T7L version provides substantial short-circuit interruption capability, with a rated ultimate short-circuit breaking capacity of 120 kA at 400–415 V AC. Its PR231/P LS/I protection unit provides adjustable long-time overload protection together with short-circuit protection, making it suitable for high-current electrical distribution systems where dependable fault interruption and configurable protection are required.

With its four-pole configuration, fixed construction, front terminals and stored-energy operating mechanism, the 1SDA062954R1 is designed for professional low-voltage switchboards and distribution assemblies. The breaker supports an optional motor drive for remote or automated operation, providing additional flexibility for industrial, commercial and infrastructure power systems.

Key Advantages

• High-performance 1250 A moulded-case circuit breaker for demanding low-voltage distribution systems.
• 120 kA ultimate short-circuit breaking capacity at 400–415 V AC.
• PR231/P LS/I solid-state electronic trip unit for adjustable overload and short-circuit protection.
• Four-pole configuration suitable for three-phase and neutral distribution networks.
• Stored-energy operating mechanism designed for professional switchboard applications.
• Optional motor drive enables integration into remote and automated switching systems.

Key Features

• ABB SACE Tmax T7L 1250 series.
• 1250 A rated uninterrupted current.
• PR231/P LS/I electronic protection trip unit.
• 120 kA Icu at 400–415 V AC.
• Four-pole configuration.
• 500–1250 A adjustable overload release range.
• 1250–12500 A adjustable short-circuit release range.
• Fixed construction with front main-circuit terminals.
• Bolt-connected main circuit.
• Stored-energy operating mechanism.
• Optional motor drive.
• IP20 degree of protection.

Advanced Overload and Short-Circuit Protection

The ABB Tmax T7L platform is designed for high-current low-voltage systems where substantial short-circuit interruption capability is required. With a rated uninterrupted current of 1250 A and an ultimate breaking capacity of 120 kA at 400–415 V AC, the 1SDA062954R1 is suitable for distribution networks with significant prospective fault currents.

The PR231/P LS/I electronic trip unit provides adjustable overload protection from 500–1250 A and short-circuit release adjustment from 1250–12500 A. Combined with its four-pole construction, fixed mounting and stored-energy operating mechanism, the breaker provides flexible protection and switching for sophisticated low-voltage power distribution assemblies.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial buildings and infrastructure installations.
• Transformer secondary and high-current feeder protection.
• Three-phase and neutral distribution networks.
• Remote and automated power switching systems.