1SDA059346R1 ABB SACE Emax E3H1000 PR121/P LI 1000 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA059346R1 E3H1000 Air Circuit Breaker?

The ABB 1SDA059346R1 is a high-performance SACE Emax E3H1000 air circuit breaker (ACB) moving part designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB New Emax series, this three-pole withdrawable circuit breaker combines a 1000 A rated current with the PR121/P electronic trip unit for reliable overload and instantaneous short-circuit protection.

Configured with LI protection, the PR121/P electronic trip unit provides long-time overload and instantaneous short-circuit protection. The E3H high-performance breaker platform is intended for industrial switchboards, power distribution systems and infrastructure installations where high fault-current interruption capability and dependable circuit protection are required.

The E3H1000 has a rated uninterrupted current of 1000 A and a rated operational voltage of up to 690 V AC. This configuration features three poles and a withdrawable moving-part design, with an ultimate short-circuit breaking capacity of 100 kA at 415 V AC and a rated short-time withstand current of 75 kA for 1 s.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for demanding low-voltage power distribution.
• 1000 A rated current for industrial electrical systems.
• Three-pole withdrawable moving-part configuration for compatible Emax switchgear.
• PR121/P electronic trip unit with LI protection functions.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• 75 kA short-time withstand current for 1 s for high-fault-level applications.
• Rated operational voltage up to 690 V AC.

Key Features

• ABB SACE Emax E3H1000 air circuit breaker moving part.
• 1000 A rated uninterrupted current.
• Three-pole configuration.
• PR121/P electronic overcurrent release.
• LI protection providing long-time and instantaneous protection.
• 100 kA ultimate short-circuit breaking capacity at 380–500 V AC.
• 85 kA ultimate short-circuit breaking capacity at 660–690 V AC.
• 75 kA short-time withstand current for 1 s.
• 690 V AC rated operational voltage.
• Withdrawable moving-part configuration for switchboard integration.
• Four auxiliary contacts with open/closed position indication.

High-Performance Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H1000 protect low-voltage electrical installations against overloads and short circuits while providing dependable switching and isolation. The high short-circuit performance of the E3H platform makes it particularly suitable for industrial distribution networks with substantial prospective fault currents.

The PR121/P electronic trip unit provides LI protection through long-time overload and instantaneous short-circuit functions. Combined with the withdrawable Emax moving-part design, this provides dependable circuit protection while allowing the breaker to be withdrawn from compatible switchgear for inspection, servicing or replacement.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial switchboards and switchgear assemblies.
• Transformer and generator distribution systems.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• Heavy industrial electrical installations.
• High-fault-level low-voltage distribution networks.