Why Choose the ABB 1SDA124872R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA124872R1 is a high-capacity SACE Emax 3 air circuit breaker designed for reliable protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB Emax 3 E2.3N series, it combines a 2500 A rated current with an Ekip Aware electronic release and LI protection functions for high-current industrial, commercial and infrastructure applications.
This circuit breaker provides long-time overload and instantaneous short-circuit protection, helping protect conductors, switchboards and connected equipment against excessive current conditions. Its fixed three-pole construction and rear horizontal connection arrangement make it suitable for integration into compatible low-voltage distribution assemblies.
With a 2500 A rated current, 690 V rated voltage and an E2.3N short-circuit rating of 66 kA at 440 V AC, the 1SDA124872R1 is suited to high-demand feeders and main distribution circuits. The Ekip Aware electronic release provides adjustable protection parameters for adapting the breaker to the requirements of the electrical installation.
Key Advantages
- High-capacity 2500 A air circuit breaker for demanding low-voltage distribution applications.
- Ekip Aware electronic release provides intelligent electronic circuit protection.
- LI protection combines long-time overload and instantaneous short-circuit protection.
- 66 kA short-circuit breaking capacity at 440 V AC for demanding distribution systems.
- Three-pole fixed configuration for robust switchboard integration.
- Rear horizontal connection arrangement for compatible fixed switchgear installations.
- Four auxiliary change-over contacts support additional signalling and control functions.
Key Features
- ABB SACE Emax 3 E2.3N series.
- 2500 A rated permanent current.
- Ekip Aware LI electronic release.
- Long-time overload and instantaneous short-circuit protection.
- 1000–2500 A overload protection setting range.
- 3750–37500 A instantaneous short-circuit setting range.
- 66 kA rated ultimate short-circuit breaking capacity at 440 V AC.
- 690 V rated voltage.
- Three-pole fixed construction.
- Rear horizontal main circuit connection.
- Bolt connection for the main circuit.
- Four auxiliary change-over contacts.
- Open/closed circuit-breaker position indication.
- IP30 protection rating.
Reliable High-Current Power Distribution Protection
The ABB Emax 3 E2.3N platform is designed for high-current low-voltage distribution systems where dependable circuit protection and switching are required. The Ekip Aware release provides LI protection, with long-time protection helping protect against sustained overload conditions and instantaneous protection responding to high short-circuit currents.
The fixed three-pole construction of the 1SDA124872R1, combined with its rear horizontal connection arrangement, supports installation in compatible switchboards and electrical distribution assemblies. Its 2500 A rating provides substantial current-carrying capacity for high-demand feeders and main distribution circuits.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- High-current feeder protection.
- Commercial building electrical distribution.
- Industrial plants and manufacturing facilities.
- Infrastructure and power management installations.
- High-capacity electrical switchgear and panel systems.
