1SDA062973R1 ABB T7V 1250 PR332/P-LI 1250 A 4-Pole MCCB

Why Choose the ABB 1SDA062973R1 T7V 1250 Circuit Breaker?

The ABB 1SDA062973R1, extended product type T7V 1250 PR332/P LI In=1250A 4p F F, is a high-performance moulded case circuit breaker (MCCB) designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Tmax T7 series, this model combines a 1250 A rated uninterrupted current, four-pole construction and the advanced PR332/P-LI electronic trip unit.

The PR332/P-LI solid-state release provides long-time overload and instantaneous short-circuit protection, allowing the breaker to protect high-current feeders and distribution circuits against damaging overcurrent conditions. Its electronic protection system provides adjustable settings that allow the protection characteristics to be matched more closely to the electrical installation than a fixed trip arrangement.

With a rated ultimate short-circuit breaking capacity of 150 kA at 400 V AC, 50 Hz, the T7V 1250 is particularly well suited to installations with very high prospective fault currents. This version is supplied as a fixed four-pole breaker with front terminals and a lever operating mechanism, providing a robust solution for industrial switchboards, infrastructure and high-capacity power distribution assemblies.

Key Advantages

• High-performance ABB SACE Tmax T7V moulded case circuit breaker for demanding low-voltage distribution systems.
• 1250 A rated uninterrupted current for high-current applications.
• Four-pole construction enables simultaneous switching of three phases and neutral.
• 150 kA ultimate breaking capacity at 400 V AC, 50 Hz for installations with very high prospective fault currents.
• Advanced PR332/P-LI electronic trip unit for overload and instantaneous short-circuit protection.
• Overload release adjustable across 500–1250 A.
• Fixed configuration with front terminals for integration into low-voltage switchboards and distribution assemblies.

Key Features

• ABB SACE Tmax T7V 1250 series MCCB.
• 1250 A rated uninterrupted current.
• Four-pole construction.
• PR332/P-LI solid-state electronic release.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• Overload release adjustable from 500–1250 A.
• Instantaneous short-circuit release adjustable from 1875–18750 A.
• 150 kA Icu at 400 V AC, 50 Hz.
• 690 V AC rated voltage.
• Fixed installation format.
• Front-side main circuit connections.
• Bolted main circuit connection.
• Lever operating mechanism.
• IP20 degree of protection.

Four-Pole Protection for High-Current Power Distribution

The four-pole construction of the ABB Tmax T7V 1250 enables the breaker to switch all three phases together with the neutral conductor. This makes the 1SDA062973R1 particularly suitable for three-phase four-wire distribution systems where simultaneous isolation of the neutral is required as part of the switching arrangement.

The PR332/P-LI electronic trip unit combines adjustable long-time overload protection with instantaneous short-circuit protection. Together with the 150 kA breaking capacity at 400 V AC of the T7V platform, this provides dependable protection for high-current distribution systems where substantial prospective fault levels can occur.

Typical Applications

• Main and sub-main low-voltage distribution boards.
• Three-phase four-wire electrical distribution systems.
• Industrial switchboards and power distribution assemblies.
• Main incomers and high-current feeder circuits.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Electrical networks with very high prospective short-circuit currents.