Why Choose the ABB 1SDA124817R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA124817R1 is a high-performance low-voltage air circuit breaker (ACB) designed for reliable protection and switching in demanding electrical distribution systems. As part of the advanced ABB SACE Emax 3 E2.3N series, it combines robust circuit protection with intelligent Ekip Aware electronic release technology for modern power distribution applications.
This circuit breaker features a 1250 A rated permanent current, three-pole fixed construction and LI protection functions for overload and instantaneous short-circuit protection. Its fixed design with rear horizontal connection is suited to integration into low-voltage switchboards and electrical distribution assemblies.
The E2.3N 1250 Ekip Aware LI configuration provides a 66 kA rated short-circuit breaking capacity at 400 V AC. With an adjustable overload release range of 500–1250 A and instantaneous short-circuit release range of 1875–18750 A, the breaker is suitable for high-current industrial and commercial power distribution systems.
Key Advantages
- High-capacity ABB SACE Emax 3 air circuit breaker for low-voltage power distribution.
- 1250 A rated permanent current suitable for high-current electrical installations.
- Three-pole fixed configuration for straightforward switchboard integration.
- Ekip Aware LI electronic protection provides overload and instantaneous short-circuit protection.
- 66 kA short-circuit breaking capacity at 400 V AC for demanding distribution applications.
- Rear horizontal connection arrangement for practical switchboard installation.
- Four auxiliary change-over contacts provide additional status and control signalling.
- Compatible with an optional motor operating mechanism for automated operation.
Key Features
- ABB SACE Emax 3 E2.3N series.
- 1250 A rated permanent current.
- Three-pole fixed circuit-breaker configuration.
- Ekip Aware LI electronic release.
- 500–1250 A adjustable overload release range.
- 1875–18750 A instantaneous short-circuit release range.
- 66 kA rated short-circuit breaking capacity at 400 V AC, 50 Hz.
- 690 V rated voltage.
- Rear horizontal main circuit connection.
- Bolt connection for the main circuit.
- Four auxiliary contacts with change-over configuration.
- Open/closed circuit-breaker position indication.
- IP30 protection rating.
- Approximate power loss of 83 W.
Reliable High-Current Power Distribution Protection
Air circuit breakers such as the ABB Emax 3 E2.3N provide dependable protection and switching for high-current low-voltage electrical distribution systems. The Ekip Aware electronic release manages the configured LI protection functions, helping protect conductors and connected equipment against damaging overload and short-circuit conditions.
The fixed three-pole construction and rear horizontal connection arrangement make the 1SDA124817R1 suitable for integration into switchboards, distribution panels and industrial power systems. Its adjustable protection settings allow the breaker to be configured for the requirements of the connected electrical installation.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Commercial building electrical distribution.
- High-current feeder protection.
- Industrial electrical panels and switchgear.
- Transformer, generator and installation protection.
- Infrastructure and power management installations.
