Why Choose the ABB 1SDA126057R1?
The ABB 1SDA126057R1 is an SACE Emax 3 E2.3S 250 A air circuit breaker equipped with an Ekip Aware LI electronic trip unit and a 3-pole configuration. Designed for dependable low-voltage power distribution and system protection, it combines adjustable long-time and instantaneous protection functions with ABB's Emax 3 platform.
With a rated uninterrupted current of 250 A, the E2.3S 250 provides reliable protection against overloads and short-circuit conditions. Its LI protection configuration allows the long-time and instantaneous protection thresholds to be adjusted to suit different electrical installation requirements.
The 1SDA126057R1 is the mobile part of a withdrawable circuit breaker assembly in WMP configuration, providing a practical solution for switchboards where breaker withdrawal supports inspection, maintenance and replacement operations.
Key Advantages
- ABB SACE Emax 3 E2.3S platform for low-voltage power distribution
- 250 A rated uninterrupted current for dependable circuit protection
- Ekip Aware LI electronic trip unit with adjustable protection functions
- 3-pole configuration for three-phase electrical distribution systems
- Rated ultimate short-circuit breaking capacity of 85 kA at 440 V
- Rated short-time withstand current of 66 kA for 1 s
- WMP mobile part for compatible withdrawable Emax 3 assemblies
- Withdrawable design facilitates inspection, maintenance and replacement
Key Features
- Manufacturer: ABB
- Order code: 1SDA126057R1
- Product family: SACE Emax 3
- Breaker type: E2.3S 250
- Trip unit: Ekip Aware LI
- Protection functions: Long-time and instantaneous protection
- Number of poles: 3
- Configuration: WMP mobile part
- Rated uninterrupted current: 250 A
- Installation type: Withdrawable
Reliable Emax 3 Protection for Power Distribution
The ABB E2.3S 250 combines a robust air circuit breaker platform with the Ekip Aware LI electronic trip unit. This provides adjustable protection against overloads and high short-circuit currents while supporting flexible protection coordination within low-voltage distribution systems.
The WMP configuration of the 1SDA126057R1 is designed as the mobile part of a compatible withdrawable assembly, making it suitable for installations where controlled withdrawal of the breaker can simplify servicing, inspection and equipment replacement.
Typical Applications
- Low-voltage power distribution systems
- Withdrawable electrical switchboards
- Main and sub-main distribution boards
- Industrial electrical switchboards
- Commercial building distribution systems
- Transformer protection applications
- Generator and electrical system protection
