ABB SACE Emax 3 E2.3N 2500 ACB 3 Pole 2500A 66kA Ekip Aware LI Fixed Rear Terminals

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.