1SDA062714R1 ABB T7V800 PR231/P-LS/I 800A 4-Pole Circuit Breaker

Why Choose the ABB T7V800 PR231/P-LS/I 800A 4-Pole Circuit Breaker?

The ABB T7V800 PR231/P-LS/I is a high-performance moulded case circuit breaker (MCCB) designed for dependable protection and switching of low-voltage power distribution systems. As part of the proven ABB SACE Tmax T7 series, this breaker combines an 800 A current rating with an electronic PR231/P trip unit for accurate overload, short-circuit and instantaneous protection.

This model is supplied in a 4-pole fixed configuration with front terminals, making it suitable for industrial switchboards, distribution panels and electrical installations where reliable four-pole circuit protection is required. The PR231/P-LS/I electronic release provides adjustable long-time, short-time and instantaneous protection functions for effective coordination with downstream electrical equipment.

With a rated current of 800 A, the T7V breaking-capacity version provides high fault interruption performance, including an ultimate short-circuit breaking capacity of 150 kA at 380–415 V AC. Its robust construction and high breaking capacity make it particularly suitable for demanding industrial and commercial power-distribution applications.

Key Advantages

• High-performance ABB SACE Tmax T7 moulded case circuit breaker.
• 800 A rated current for high-current distribution systems.
• 4-pole configuration for three-phase and neutral circuit protection.
• Electronic PR231/P-LS/I trip unit with long-time, short-time and instantaneous protection.
• High 150 kA Icu breaking capacity at 380–415 V AC.
• Fixed installation with front terminals for straightforward switchboard integration.

Key Features

• ABB SACE Tmax T7V series.
• 800 A rated current.
• 4-pole construction.
• PR231/P electronic trip unit.
• LS/I protection functions for overload and short-circuit protection.
• Long-time protection adjustable from approximately 0.4–1 × In.
• Instantaneous protection adjustment range up to approximately 12 × In.
• Selectable neutral protection settings for four-pole distribution systems.
• Fixed mounting with front terminals.

Reliable Protection for Power Distribution Systems

Moulded case circuit breakers such as the ABB Tmax T7 provide protection against overloads and short circuits while also providing a dependable means of isolating electrical circuits. Electronic trip technology allows protection thresholds to be adjusted to suit the installation and improve selectivity between upstream and downstream protective devices.

The PR231/P release used in this breaker provides LS/I protection functions for power-distribution applications. Combined with the T7V breaker’s high interruption capability, this makes the unit suitable for installations where substantial prospective fault currents may occur.

Typical Applications

• Industrial low-voltage switchboards.
• Main and sub-main power distribution systems.
• Commercial and infrastructure electrical installations.
• Manufacturing plants and process facilities.
• Power distribution panels with high prospective fault levels.
• Three-phase systems requiring switched and protected neutral conductors.