1SDA059429R1 ABB E4H/f 3200 PR121/P-LI 3200A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E4H/f 3200 PR121/P-LI 3200A 4-Pole Fixed Air Circuit Breaker?

The ABB E4H/f 3200 PR121/P-LI, order code 1SDA059429R1, is a high-performance 3200 A four-pole fixed air circuit breaker designed for switching and protecting high-current low-voltage power distribution systems. As part of the proven ABB SACE Emax E4H range, this version incorporates a full-size neutral conductor and is engineered for demanding industrial, commercial and infrastructure switchgear.

This Emax circuit breaker is equipped with the PR121/P-LI R3200 electronic trip unit, providing long-time overload (L) and instantaneous short-circuit (I) protection. The electronic release helps protect cables, busbars, transformers, switchgear and connected equipment against sustained overloads and severe short-circuit faults.

With a rated current of 3200 A and an ultimate short-circuit breaking capacity of 100 kA at 415 V AC, the E4H/f 3200 is designed for installations with substantial prospective fault levels. This model features a four-pole fixed construction with horizontal rear terminals, four auxiliary contacts and circuit-breaker open/closed position indication.

Key Advantages

• Heavy-duty 3200 A air circuit breaker for high-current low-voltage distribution.
• Four-pole configuration with full-size neutral conductor.
• PR121/P-LI R3200 electronic trip unit provides overload and instantaneous short-circuit protection.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• 85 kA short-time withstand current for 1 s.
• Fixed construction for permanent integration into power switchboards.
• Horizontal rear terminals facilitate high-current busbar connections.
• Four auxiliary contacts with circuit-breaker open/closed position indication.
• Part of the established ABB SACE Emax air circuit breaker platform.

Key Features

• ABB SACE Emax E4H/f air circuit breaker.
• 3200 A rated current.
• Four-pole construction.
• Full-size neutral conductor.
• PR121/P-LI R3200 electronic overcurrent release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• Fixed version (F).
• Horizontal rear terminals (HR).
• 100 kA Icu at 415 V AC.
• 85 kA Icw for 1 s.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Designed for demanding high-current power distribution applications.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E4H are designed to switch and protect high-current low-voltage distribution circuits. The PR121/P electronic trip unit monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping safeguard cables, busbars, transformers, switchgear and connected equipment against damaging overload and short-circuit conditions.

The PR121/P-LI release combines long-time overload and instantaneous short-circuit protection with the substantial fault-current capability of the E4H frame. Combined with its 3200 A rating, four-pole full-size-neutral construction and fixed horizontal rear connections, this breaker is particularly well suited to high-capacity main distribution and feeder applications.

Typical Applications

• High-capacity low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Three-phase four-wire distribution systems.
• Commercial and large-building electrical distribution.
• Manufacturing and process plant switchgear.
• Transformer incomer and feeder protection.
• High-fault-level distribution systems.
• Busbar and high-current circuit protection.
• Power distribution and switchgear assemblies.
• Infrastructure and utility installations.