Why Choose the ABB 1SDA126055R1?
The ABB 1SDA126055R1 is an SACE Emax 3 E2.3S 250 A air circuit breaker equipped with an Ekip Aware LI electronic trip unit and a 4-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 1SDA126055R1 is supplied in a fixed horizontal FHR configuration with rear-mounted horizontal terminals, making it suitable for switchboards, distribution panels and other low-voltage assemblies where dependable circuit protection and controlled fault interruption are required.
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
- 4-pole configuration for three-phase systems requiring neutral switching and protection
- High short-circuit breaking capacity with Icu of 85 kA at 440 V
- Fixed horizontal FHR installation configuration
- Rear-mounted horizontal terminals for practical switchboard integration
- Electronic protection technology supports accurate and flexible protection settings
Key Features
- Manufacturer: ABB
- Order code: 1SDA126055R1
- 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: 4
- Mounting configuration: Fixed horizontal FHR
- Rated uninterrupted current: 250 A
- Terminal arrangement: Rear-mounted horizontal terminals
- Rated voltage: up to 690 V AC
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.
Its 4-pole arrangement and fixed horizontal configuration make the 1SDA126055R1 well suited to switchboards, distribution panels and industrial electrical assemblies where reliable circuit protection and controlled fault interruption are essential.
Typical Applications
- Low-voltage power distribution systems
- Main and sub-main distribution boards
- Industrial electrical switchboards
- Commercial building distribution systems
- Transformer protection applications
- Generator and electrical system protection
- Industrial automation and infrastructure power systems
