Why Choose the ABB 1SDA125808R1?
The ABB 1SDA125808R1 is an Emax 3 air circuit breaker featuring the E6.3X 4000 Ekip Aware LI configuration with four poles and a withdrawable moving part (WMP). Designed for high-capacity low-voltage power distribution, it combines advanced electronic protection with high short-circuit performance.
With a rated current of 4000 A, the 1SDA125808R1 provides LI protection functions and is engineered for demanding electrical distribution applications where dependable overload and instantaneous short-circuit protection are required.
As part of the ABB SACE Emax 3 family, this breaker is suited to modern switchboards and power distribution systems requiring high current capacity, withdrawable installation and reliable protection performance.
Key Advantages
- High current capacity: Rated for continuous currents up to 4000 A.
- Advanced Ekip Aware protection: Electronic LI protection supports overload and instantaneous short-circuit protection.
- High breaking performance: Up to 150 kA ultimate short-circuit breaking capacity at 440 V.
- High short-time withstand capability: 120 kA short-time withstand current for 1 s.
- Four-pole configuration: Provides switching and protection across four poles for suitable low-voltage distribution systems.
- Withdrawable design: WMP configuration supports practical installation, isolation and maintenance within compatible switchboards.
- Emax 3 platform: Designed for demanding industrial and commercial power distribution applications.
Key Features
- Manufacturer: ABB
- Product family: SACE Emax 3
- Breaker type: Air circuit breaker
- Frame size: E6.3X
- Rated current: 4000 A
- Protection release: Ekip Aware
- Protection functions: LI
- Number of poles: 4
- Configuration: Withdrawable moving part (WMP)
- Application: Low-voltage power distribution and protection
Power Distribution & Protection
The ABB 1SDA125808R1 is designed for high-capacity power distribution systems where reliable circuit protection and controlled interruption are essential. Its Ekip Aware LI release combines long-time overload protection with instantaneous short-circuit protection, while the E6.3X frame provides high interrupting and short-time withstand performance for demanding installations.
The four-pole withdrawable configuration makes the breaker suitable for compatible switchboards where operational flexibility and maintainability are important. Its Emax 3 architecture supports integration into modern low-voltage distribution environments requiring dependable protection and high-current switching capability.
Typical Applications
- Industrial low-voltage power distribution
- Large commercial electrical installations
- Main distribution switchboards
- High-current feeder protection
- Power generation and distribution facilities
- Data centre and critical infrastructure power systems
- Manufacturing and process industry installations
- Switchboard assemblies requiring withdrawable air circuit breakers
