1SDA056307R1 ABB E3S 3200 PR122/P-LI 3200 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E3S 3200 PR122/P-LI Air Circuit Breaker?

The ABB E3S 3200 PR122/P-LI, order code 1SDA056307R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection of high-current low-voltage power distribution systems. Part of the ABB SACE Emax E3 series, this three-pole fixed circuit breaker combines a 3200 A rated current with the PR122/P-LI R3200 electronic overcurrent release for dependable protection in demanding industrial and commercial installations.

The PR122/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection. Its electronic release technology offers adjustable protection settings, helping safeguard conductors, switchgear and connected equipment against sustained overloads and severe short-circuit faults.

The E3S 3200 provides a rated ultimate short-circuit breaking capacity of 75 kA across its specified AC operating-voltage range up to 690 V AC. This version features a three-pole fixed configuration with rear horizontal terminals, four change-over auxiliary contacts and circuit-breaker open/closed position indication for integration into high-current switchboards.

Key Advantages

• Heavy-duty 3200 A air circuit breaker for high-current power distribution.
• PR122/P-LI R3200 electronic overcurrent release for dependable circuit protection.
• LI functions provide long-time overload and instantaneous short-circuit protection.
• Three-pole fixed configuration for permanent switchboard installation.
• Rear horizontal terminals support practical connection to switchboard busbars.
• 75 kA short-circuit breaking capacity provides robust fault interruption across demanding low-voltage networks.

Key Features

• ABB SACE Emax E3S series.
• 3200 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• PR122/P-LI R3200 electronic trip unit.
• Long-time overload and instantaneous short-circuit protection.
• Three-pole fixed construction.
• Rear horizontal terminal arrangement.
• 75 kA rated ultimate short-circuit breaking capacity at 400 V AC.
• 75 kA rated short-time withstand current for 1 s.
• Four change-over auxiliary contacts with circuit-breaker open/closed position indication.

Electronic LI Protection for High-Current Distribution

The PR122/P-LI release provides two complementary protection functions for high-current electrical networks. Long-time protection responds to sustained overload conditions, while instantaneous protection rapidly trips the circuit breaker when severe short-circuit currents exceed the configured threshold.

Combined with the robust E3S platform, the PR122/P-LI release makes the 1SDA056307R1 suitable for distribution systems requiring configurable electronic protection without an integrated earth-fault function. Its fixed construction and rear horizontal terminals provide a practical arrangement for integration into main switchboards and industrial busbar systems.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer-fed low-voltage distribution circuits.
• High-current switchgear and distribution assemblies.