Why Choose the ABB 1SDA125457R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA125457R1 is a high-capacity SACE Emax 3 E2.3H 2000 air circuit breaker configured as a three-pole withdrawable moving part with an Ekip Aware LSI electronic release, providing advanced protection for demanding low-voltage power distribution systems.
With a 2000 A rated permanent current, the 1SDA125457R1 is designed for high-current industrial installations where dependable switching and protection are required. Its Ekip Aware LSI release provides long-time, short-time and instantaneous protection functions for flexible circuit protection.
The E2.3H 2000 configuration offers a high short-circuit performance level, with an Icu of 100 kA at 440 V and an Icw of 85 kA for 1 s, making it suitable for demanding industrial distribution and main switchboard applications.
Key Advantages
- High-capacity ABB SACE Emax 3 air circuit breaker for industrial power distribution.
- 2000 A rated permanent current for high-load electrical systems.
- Three-pole withdrawable moving-part configuration for compatible Emax 3 E2.3H installations.
- Ekip Aware LSI electronic release with adjustable protection functions.
- 100 kA ultimate short-circuit breaking capacity at 440 V.
- 85 kA short-time withstand current for 1 s.
- Four auxiliary contacts for control, signalling and system integration.
Key Features
- ABB SACE Emax 3 E2.3H series.
- 2000 A rated permanent current.
- Three-pole configuration.
- Ekip Aware LSI electronic release.
- Long-time, short-time and instantaneous protection.
- I1 adjustment range of 800–2000 A.
- I3 adjustment range of 3000–30000 A.
- 100 kA Icu at 440 V.
- 85 kA Icw for 1 s.
- Four auxiliary contacts.
Reliable Protection for Industrial Power Distribution
Air circuit breakers from the ABB Emax 3 family are designed for controlled switching and protection of high-current low-voltage electrical distribution systems. The E2.3H platform combines high current-carrying capability with advanced electronic protection for demanding industrial applications.
The Ekip Aware LSI electronic release provides configurable long-time, short-time and instantaneous protection functions, allowing the circuit breaker to be integrated into protection schemes where adjustable trip characteristics and dependable fault protection are required.
Typical Applications
- Industrial low-voltage power distribution.
- Main and secondary distribution switchboards.
- High-current industrial electrical installations.
- Transformer protection systems.
- Generator protection and switching.
- Commercial and infrastructure power distribution.
- Withdrawable circuit breaker systems requiring high short-circuit performance.
