1SDA059430R1 ABB SACE New Emax E4H/f3200 PR121/P LSI 3200 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA059430R1 E4H/f3200 Air Circuit Breaker?

The ABB 1SDA059430R1 is a high-performance SACE New Emax E4H/f3200 air circuit breaker (ACB) designed for protection and switching in demanding low-voltage power distribution systems. This four-pole fixed circuit breaker combines a 3200 A rated uninterrupted current with the PR121/P electronic trip unit, making it suitable for high-current industrial, commercial and infrastructure distribution applications.

Configured with LSI protection, the PR121/P electronic trip unit provides long-time, short-time and instantaneous protection functions. This allows the breaker to protect high-current electrical networks against overloads and short circuits while supporting selective protection coordination within main distribution switchboards.

The E4H/f3200 features a four-pole fixed configuration with rear horizontal terminals and a full-size neutral pole. The E4H platform provides an ultimate short-circuit breaking capacity of 100 kA at 415 V AC and 85 kA at 690 V AC, together with high short-time withstand capability for demanding power distribution networks.

Key Advantages

• High-current ABB SACE New Emax E4H/f3200 air circuit breaker for demanding power distribution.
• 3200 A rated uninterrupted current for major industrial and infrastructure loads.
• Four-pole fixed configuration with full-size neutral pole.
• PR121/P electronic trip unit with configurable LSI protection.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• High short-time withstand capability for selective high-fault-level distribution systems.
• Rear horizontal terminals for integration into compatible high-current switchboards.

Key Features

• ABB SACE New Emax E4H/f3200 air circuit breaker.
• 3200 A rated uninterrupted current.
• Four-pole configuration with 100% neutral.
• PR121/P electronic overcurrent release.
• LSI protection providing long-time, short-time and instantaneous protection.
• 100 kA ultimate short-circuit breaking capacity at 220–500 V AC.
• 85 kA ultimate short-circuit breaking capacity at 660–690 V AC.
• 100 kA short-time withstand current for 1 s.
• 75 kA short-time withstand current for 3 s.
• Fixed construction with rear horizontal main terminals.
• Four auxiliary contacts with open/closed circuit-breaker position indication.

High-Current Protection for Critical Power Distribution

Air circuit breakers such as the ABB SACE New Emax E4H/f3200 provide protection, switching and isolation for high-current low-voltage electrical networks. With a 3200 A current rating and substantial short-circuit interruption capability, this breaker is suited to main incomers, bus couplers and major feeder circuits in industrial plants, commercial facilities and infrastructure installations.

The PR121/P electronic trip unit provides LSI protection through long-time overload, short-time short-circuit and instantaneous short-circuit functions. Combined with the E4H frame's high short-circuit performance and four-pole full-neutral construction, this configuration provides dependable protection for high-capacity distribution systems where neutral switching and strong fault-withstand capability are required.

Typical Applications

• Main low-voltage switchboards and distribution boards.
• High-current transformer secondary protection.
• Industrial plants and process facilities.
• Generator and critical-power distribution systems.
• Commercial buildings and infrastructure installations.
• Main incomer, bus coupler and high-current feeder applications.
• Four-pole systems requiring full-size neutral switching.