Why Choose the ABB 1SDA124938R1?
The ABB 1SDA124938R1 is an SACE Emax 3 E6.3H 4000 Ekip Aware LSI 3-pole fixed air circuit breaker designed for high-current low-voltage power distribution and demanding circuit protection applications.
With a 4000 A rated current and Ekip Aware electronic trip unit, this air circuit breaker provides long-time, short-time and instantaneous protection for electrical systems requiring dependable fault protection and high current-handling capability.
The fixed 3-pole configuration with rear horizontal terminals provides a practical solution for integration into compatible switchboards and distribution assemblies where robust protection and reliable switching performance are required.
Key Advantages
- 4000 A rated current for high-capacity power distribution systems
- Ekip Aware electronic release for advanced circuit protection and monitoring
- LSI protection combining long-time overload, short-time and instantaneous protection functions
- E6.3H high-performance frame for demanding low-voltage applications
- 3-pole fixed construction for secure and consistent switchboard installation
- Rear horizontal terminals for practical connection within compatible assemblies
- Suitable for industrial, commercial and critical power distribution systems
Key Features
- ABB SACE Emax 3 E6.3H series air circuit breaker
- Order code: 1SDA124938R1
- Rated current: 4000 A
- 3-pole fixed version
- Ekip Aware electronic trip unit
- LSI protection functions
- Rear horizontal connection configuration
- High-capacity frame for demanding power distribution applications
High-Current Power Distribution and Protection
The ABB 1SDA124938R1 combines the high-current capability of the Emax 3 E6.3H platform with an Ekip Aware electronic trip unit. Its LSI protection functions provide protection against overload conditions, short-time fault currents and high-current instantaneous short-circuit events.
The fixed 3-pole construction and rear horizontal terminal arrangement make this air circuit breaker suitable for integration into high-capacity switchboards, distribution panels and other low-voltage power systems requiring reliable protection at currents up to 4000 A.
Typical Applications
- Low-voltage main distribution switchboards
- Industrial power distribution systems
- Commercial electrical distribution equipment
- High-current feeder protection
- Manufacturing and process plants
- Large building electrical infrastructure
- Data centre and critical power distribution systems
- High-capacity electrical infrastructure and energy distribution installations
