ABB 1SDA124818R1 E2.3N 1250 Ekip Aware LSI 3P FHR Air Circuit Breaker
The ABB 1SDA124818R1 is an Emax 3 E2.3N 1250 air circuit breaker featuring an Ekip Aware LSI electronic trip unit, three-pole fixed construction and rear horizontal connections for dependable low-voltage power distribution.
With a rated current of 1250 A and a rated voltage of up to 690 V AC, this SACE Emax 3 circuit breaker provides long-time, short-time and instantaneous protection for demanding industrial and commercial electrical distribution systems.
The fixed FHR configuration provides rear horizontal terminals and four auxiliary contacts, making the ABB 1SDA124818R1 suitable for integration into compatible switchboards, main distribution boards and high-capacity feeder applications.
Key Advantages
- 1250 A rated current for high-capacity power distribution.
- Ekip Aware electronic trip unit with LSI protection functions.
- Three-pole fixed configuration for straightforward switchboard installation.
- 66 kA interrupting capability at 440 V AC.
- 66 kA short-time withstand capability for 1 s.
- Rear horizontal terminal arrangement for practical panel integration.
- Four auxiliary contacts for additional control and signalling functions.
Key Features
- ABB SACE Emax 3 E2.3N air circuit breaker.
- Order code: 1SDA124818R1.
- Ekip Aware LSI electronic release.
- Long-time, short-time and instantaneous protection functions.
- 1250 A rated current.
- 690 V AC rated voltage.
- 3-pole fixed construction.
- Rear horizontal terminal configuration.
- Four auxiliary contacts.
- Open/closed position indication.
- Suitable for high-capacity low-voltage distribution applications.
High-Capacity Electronic Circuit Protection
The ABB 1SDA124818R1 combines the Emax 3 E2.3N platform with Ekip Aware LSI electronic protection to provide controlled interruption and protection for high-current distribution circuits. Its LSI protection arrangement addresses overload and short-circuit conditions through configurable long-time, short-time and instantaneous functions.
The 1250 A frame is designed for high-capacity low-voltage distribution, while the fixed three-pole construction and rear horizontal terminals support integration into compatible switchboards. The 66 kA interrupting and short-time withstand ratings provide a robust protection capability for demanding electrical distribution environments.
Typical Applications
- Main low-voltage distribution boards.
- Industrial power distribution systems.
- Commercial electrical switchboards.
- High-current feeder protection.
- Manufacturing and process installations.
- Infrastructure and building power systems.
- Power distribution and electrical protection assemblies.
