1SDA126562R1 ABB RC Protection Setting for SACE Emax 3

Why Choose the ABB 1SDA126562R1 RC Protection Setting?

The ABB 1SDA126562R1, product designation RC protection setting E1.3...E6.3, is an RC residual-current protection upgrade for the ABB SACE Emax 3 air circuit-breaker platform. It enables compatible Emax 3 protection systems to incorporate residual-current protection functionality for enhanced detection of earth leakage and residual-current conditions.

The RC protection function works with an appropriate external residual-current toroid, allowing the protection system to monitor the vector sum of the conductors passing through the sensor. Residual current caused by insulation deterioration, leakage to earth or another earth-fault path can therefore be detected and used by the compatible Emax 3 protection system as part of the installation's protective strategy.

ABB lists the 1SDA126562R1 as a protection upgrade within the Emax 3 accessory portfolio. The exact toroidal sensor required depends on the circuit-breaker frame, pole configuration and installation arrangement, so the RC protection setting should be paired with the appropriate ABB residual-current toroid for the selected breaker configuration.

Key Advantages

• Adds residual-current (RC) protection functionality to compatible ABB SACE Emax 3 systems.
• Supports detection of earth leakage and residual-current conditions.
• Works with an appropriate external residual-current toroid.
• Provides an additional protection layer beyond conventional phase overcurrent functions.
• Suitable for demanding low-voltage power-distribution applications.
• Integrates with the ABB Emax 3 protection and accessory ecosystem.
• Supports protection strategies for industrial, infrastructure and critical-power installations.
• Genuine ABB protection upgrade identified by order code 1SDA126562R1.

Key Features

• ABB SACE Emax 3 protection upgrade.
• RC – residual-current protection functionality.
• Designed for use with compatible Emax 3 circuit breakers and protection releases.
• Requires a compatible external RC toroidal sensor.
• Detects residual current by monitoring the combined current through the toroid.
• Supports detection of leakage and earth-fault conditions.
• Part of ABB's Emax 3 protection-upgrade portfolio.
• Can be specified alongside other compatible Emax 3 protection and measurement functions.
• Suitable for low-voltage distribution protection applications.
• ABB US / CA designation F3A-SW-RC.

Residual-Current Protection for Emax 3

Residual-current protection operates by measuring the vector sum of the currents flowing through the conductors enclosed by a toroidal sensor. Under normal conditions this sum is effectively balanced. When current flows through an unintended path to earth, an imbalance is detected, allowing the compatible protection system to identify the residual-current condition and act according to its configured protection settings.

The ABB 1SDA126562R1 provides the RC protection setting within the Emax 3 ecosystem. ABB's application examples pair this protection function with an appropriate RC toroid selected for the breaker frame and pole arrangement, providing a coordinated solution for applications where residual-current monitoring forms part of the required electrical protection scheme.

Typical Applications

• Industrial low-voltage power-distribution systems.
• ABB SACE Emax 3 circuit-breaker installations requiring RC protection.
• Main incoming and distribution switchboards.
• Manufacturing and process-industry electrical systems.
• Data centres and critical-power installations.
• Commercial and infrastructure distribution systems.
• Generator and transformer distribution boards.
• Installations requiring residual-current and earth-leakage monitoring.