Why Choose the ABB 1SDA128921R1 SACE Emax 3 E1.3B 630 Air Circuit Breaker?
The ABB 1SDA128921R1 is a high-performance SACE Emax 3 E1.3B air circuit breaker designed for reliable protection and control of low-voltage electrical distribution systems. This three-pole circuit breaker is rated at 630 A and is equipped with an Ekip Aware LSIG trip unit providing comprehensive electronic protection functions for demanding power distribution applications.
As part of the ABB SACE Emax 3 range, the E1.3B platform combines advanced protection, monitoring and communication capabilities with the robust construction expected from an air circuit breaker. The Ekip Aware trip unit provides LSIG protection and supports advanced electrical-system monitoring and asset-management functions.
The 1SDA128921R1 is supplied as the moving part only (WMP) of a withdrawable circuit breaker. Its three-pole configuration has a rated current of 630 A and a rated ultimate short-circuit breaking capacity of 42 kA at 415 V. The corresponding fixed part is ordered separately, allowing the breaker arrangement to be configured according to the requirements of the installation.
Key Advantages
- High-performance ABB SACE Emax 3 air circuit breaker for low-voltage power distribution.
- 630 A rated current suitable for demanding distribution and protection applications.
- 42 kA Icu at 415 V for high short-circuit interruption capability.
- Three-pole configuration for three-phase electrical distribution systems.
- Advanced Ekip Aware LSIG trip unit with comprehensive electronic protection functions.
- Withdrawable moving part (WMP) enables convenient breaker withdrawal and replacement when used with the separately ordered fixed part.
Key Features
- ABB SACE Emax 3 E1.3B series.
- 630 A rated current.
- Three-pole air circuit breaker.
- 42 kA rated ultimate short-circuit breaking capacity at 415 V.
- Ekip Aware LSIG electronic trip unit.
- LSIG protection covering long-time, short-time, instantaneous and earth-fault protection functions.
- Withdrawable version supplied as the moving part only (WMP).
- Designed for low-voltage power distribution and protection applications.
Advanced Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax 3 E1.3B provide dependable protection for electrical distribution systems by interrupting fault currents and protecting conductors and connected equipment from damaging overcurrent conditions. The E1.3B platform is designed for applications requiring substantial current ratings and reliable short-circuit interruption capability.
The integrated Ekip Aware LSIG trip unit provides electronic protection and monitoring functionality. Its LSIG configuration combines long-time, short-time, instantaneous and earth-fault protection functions, enabling the breaker to be configured for the protection requirements of modern low-voltage distribution systems.
The withdrawable construction allows the circuit-breaker moving part to be withdrawn from its separately ordered fixed part. This arrangement can simplify inspection, maintenance and replacement procedures in suitable switchgear installations.
Typical Applications
- Low-voltage electrical distribution systems.
- Main and secondary distribution switchboards.
- Industrial power distribution installations.
- Commercial and infrastructure electrical systems.
- Transformer and generator protection applications.
- Power management and energy distribution equipment.
- Withdrawable switchgear and electrical control assemblies.
