1SDA056832R1 ABB E4H 3200 PR121/P-LI 3200 A 3-Pole Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB 1SDA056832R1 E4H 3200 Air Circuit Breaker?

The ABB 1SDA056832R1 is a high-performance SACE Emax E4H 3200 air circuit breaker (ACB) moving part designed for protection and switching in demanding high-current low-voltage electrical distribution systems. Part of the ABB New Emax / SACE Emax range, this three-pole withdrawable circuit-breaker moving part combines a 3200 A rated current with the PR121/P-LI electronic overcurrent release.

The PR121/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection, helping safeguard conductors, busbars, switchgear and connected equipment against damaging overcurrent conditions. The E4H high-performance configuration is engineered for installations with substantial prospective fault currents, while the withdrawable design supports convenient servicing and maintenance within compatible switchgear assemblies.

With a rated uninterrupted current of 3200 A, a three-pole withdrawable configuration and rated operational voltage up to 690 V AC, the 1SDA056832R1 is suited to high-capacity industrial and commercial power distribution. The E4H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC and 85 kA at 690 V AC.

Key Advantages

• High-capacity 3200 A air circuit breaker moving part for low-voltage power distribution.
• Withdrawable three-pole design supports maintainable switchboard installations.
• PR121/P-LI electronic protection release provides overload and instantaneous short-circuit protection.
• E4H high-breaking-capacity performance level for systems with substantial prospective fault currents.
• 100 kA ultimate short-circuit breaking capacity at 400 V AC.
• 85 kA ultimate short-circuit breaking capacity at 690 V AC.
• 100 kA short-time withstand current for 1 s supports demanding distribution applications.
• Four auxiliary contacts provide circuit-breaker open/closed status indication.

Key Features

• ABB SACE Emax E4H 3200 series.
• 3200 A rated uninterrupted current.
• Three-pole circuit-breaker configuration.
• Withdrawable moving part construction.
• PR121/P-LI R3200 electronic overcurrent release.
• Long-time (L) overload protection.
• Instantaneous (I) short-circuit protection.
• 100 kA Icu at 220–500 V AC.
• 85 kA Icu at 660–690 V AC.
• 100 kA short-time withstand current for 1 s.
• 75 kA short-time withstand current for 3 s.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.

High-Performance Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E4H provide switching and protection for high-current low-voltage distribution networks. The electronic trip unit monitors electrical conditions and initiates circuit interruption when configured protection thresholds are exceeded, helping protect switchgear, cables, busbars and connected equipment from damaging overload and short-circuit currents.

The PR121/P-LI release combines long-time overload protection with instantaneous short-circuit protection. Together with the E4H circuit breaker's high fault-breaking and short-time withstand capabilities, the 1SDA056832R1 is well suited to demanding main distribution and industrial switchgear applications where high current capacity and maintainable withdrawable construction are required.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer secondary circuit protection.
• Main incomer and high-current feeder protection.
• Withdrawable switchgear requiring serviceable circuit-breaker assemblies.
• Electrical systems with high prospective short-circuit currents.