Why Choose ABB 1SDA125628R1?
The ABB 1SDA125628R1 is an E1.3N 1250 Ekip Aware LI 4-pole withdrawable circuit breaker moving part designed for reliable low-voltage power distribution and protection applications. It combines a 1250 A rated current with ABB Ekip Aware LI electronic protection technology for dependable circuit protection and operational monitoring.
Configured with long-time and instantaneous protection, the 1SDA125628R1 provides adjustable protection settings with an I1 range of 500–1250 A and an I3 range of 1875–18750 A. Its 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 E1.3N platform, the ABB 1SDA125628R1 is suited to switchboards and distribution systems where maintainability, protection performance and controlled withdrawal are important. The unit also includes auxiliary contacts and open/closed position indication for integration with switchgear control and monitoring systems.
Key Advantages
- 1250 A rated current for high-capacity low-voltage distribution systems
- 4-pole configuration for comprehensive circuit switching and protection
- Ekip Aware LI electronic release with adjustable long-time and instantaneous protection
- High 66 kA short-circuit interrupting capacity at 440 V
- 50 kA short-time withstand current for 1 s
- Withdrawable moving-part construction for easier inspection, servicing and replacement
- Four auxiliary contacts for switchgear status and control 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 LI 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 LI Protection
The ABB 1SDA125628R1 forms part of 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 LI release provides long-time and instantaneous protection functions, allowing the breaker to be configured for the protection requirements of high-capacity distribution circuits.
The adjustable long-time protection range of 500–1250 A allows the thermal protection threshold to be matched to the connected installation, while the instantaneous protection range of 1875–18750 A provides rapid response to high fault currents. The E1.3N version has a 66 kA Icu rating at 440 V and a 50 kA Icw rating for 1 s.
As a withdrawable moving part, the 1SDA125628R1 is intended 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 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
- Motor and equipment feeder protection
- Electrical substations and power distribution assemblies
- Switchboards requiring withdrawable air circuit breakers
- Installations requiring integrated breaker status monitoring
