Why Choose the ABB E1.3B 1250 Ekip Aware LSI 3p F F Air Circuit Breaker?
The ABB 1SDA124758R1 is an E1.3B 1250 Ekip Aware LSI 3-pole fixed air circuit breaker from the SACE Emax 3 range, designed to provide dependable protection and switching for demanding low-voltage power distribution systems.
With a rated current of 1250 A and Ekip Aware electronic protection, this circuit breaker provides adjustable long-time, short-time and instantaneous protection functions for high-current feeders, distribution systems, transformers and other electrical installations.
The fixed three-pole construction, front terminals and 42 kA short-circuit breaking capacity provide a robust solution for industrial and commercial switchboards requiring reliable high-current circuit protection and flexible electronic protection settings.
Key Advantages
- 1250 A rated current: Supports high-current low-voltage distribution and feeder applications.
- Ekip Aware electronic release: Provides precise electronic protection with adjustable operating thresholds.
- LSI protection: Combines long-time, short-time and instantaneous protection functions for comprehensive circuit protection.
- 42 kA breaking capacity: Provides robust short-circuit interruption capability for demanding electrical installations.
- 3-pole fixed construction: Provides a straightforward installation solution for compatible switchboards and distribution assemblies.
- Front terminals: Provide practical main circuit connections within the fixed breaker configuration.
- Four auxiliary contacts: Support external status indication and control functions.
Key Features
- ABB SACE Emax 3 E1.3B air circuit breaker
- Order code 1SDA124758R1
- 1250 A rated current
- 3-pole configuration
- Fixed version
- Front terminal configuration
- Ekip Aware electronic release
- LSI protection functions
- Long-time current setting from 500 to 1250 A
- Short-time current setting from 750 to 12500 A
- Instantaneous current setting from 1875 to 18750 A
- 42 kA short-circuit breaking capacity
- Up to 690 V AC operating voltage
- IP30 degree of protection
- 4 auxiliary contacts
- Open/closed circuit breaker position indication
Reliable Protection for Low-Voltage Power Distribution
The ABB E1.3B 1250 Ekip Aware LSI 3p F F is designed for high-current low-voltage electrical distribution where dependable overload and short-circuit protection is essential. Its 1250 A rating accommodates substantial electrical loads, while the Ekip Aware electronic release provides adjustable long-time, short-time and instantaneous protection settings.
With a 42 kA short-circuit breaking capacity, front terminals, four auxiliary contacts and fixed three-pole construction, the 1SDA124758R1 can be integrated into industrial switchboards, power distribution assemblies and electrical infrastructure requiring robust and adjustable air circuit breaker protection.
Typical Applications
- Industrial low-voltage power distribution
- Main and secondary switchboards
- High-current feeder protection
- Transformer protection and distribution
- Generator distribution systems
- Commercial and industrial electrical installations
- Power distribution panels and assemblies
- Infrastructure and utility electrical systems
