Why Choose ABB 1SDA125629R1?
The ABB 1SDA125629R1 is an E1.3N 1250 Ekip Aware LSI 4-pole withdrawable moving part designed for dependable low-voltage power distribution and circuit protection applications. It combines a 1250 A rated current with ABB Ekip Aware LSI electronic protection technology for reliable protection and operational control.
Configured with long-time, short-time and instantaneous protection functions, the 1SDA125629R1 provides adjustable protection settings with an I1 range of 500–1250 A and an I3 range of 1875–18750 A. The E1.3N configuration provides an interrupting capacity of 66 kA at 440 V and a short-time withstand current of 50 kA for 1 s.
As a 4-pole withdrawable moving part for the ABB SACE Emax 3 platform, the 1SDA125629R1 is suitable for switchboards and distribution systems where maintainability, protection performance and controlled withdrawal are important. Four auxiliary contacts and open/closed position indication support switchgear control and monitoring functions.
Key Advantages
- 1250 A rated current for high-capacity low-voltage distribution systems
- 4-pole configuration for comprehensive circuit switching and protection
- Ekip Aware LSI electronic release with adjustable long-time, short-time and instantaneous protection
- 66 kA rated ultimate short-circuit breaking capacity at 440 V
- 50 kA short-time withstand current for 1 s
- Withdrawable moving-part construction for easier inspection, maintenance and replacement
- Four auxiliary contacts for switchgear control and status integration
- Open/closed position indication for operational monitoring
Key Features
- Manufacturer: ABB
- Product family: SACE Emax 3
- Breaker type: E1.3N
- Protection release: Ekip Aware LSI R 1250
- Rated current: 1250 A
- Number of poles: 4
- Installation: Withdrawable / draw-out
- Long-time protection setting I1: 500–1250 A
- Instantaneous protection setting I3: 1875–18750 A
- Auxiliary contacts: 4
- Position indication: Open/closed
ABB SACE Emax 3 E1.3N 1250 Ekip Aware LSI Protection
The ABB 1SDA125629R1 belongs to the SACE Emax 3 E1.3N family of air circuit breakers and is configured as a 4-pole moving part for withdrawable installations. Its Ekip Aware LSI release combines long-time, short-time and instantaneous protection functions, providing configurable protection for high-capacity distribution circuits.
The adjustable long-time protection range of 500–1250 A allows the protection threshold to be matched to the requirements of the connected installation, while the instantaneous setting range of 1875–18750 A provides rapid response to high fault currents. The E1.3N 1250 configuration has an Icu of 66 kA at 440 V and an Icw of 50 kA for 1 s.
As a withdrawable moving part, the 1SDA125629R1 is designed for use with compatible ABB SACE Emax 3 withdrawable assemblies. Four auxiliary contacts and open/closed indication provide additional functionality for switchboard control, status monitoring and electrical system integration.
Typical Applications
- Industrial low-voltage distribution switchboards
- Commercial and infrastructure electrical distribution
- Main incoming and outgoing feeder protection
- High-capacity power distribution systems
- Industrial feeder and equipment protection
- Electrical substations and power distribution assemblies
- Switchboards requiring withdrawable air circuit breakers
- Installations requiring integrated breaker status monitoring
