Hager ESC428 Modular Contactor 25A 3NO 1NC 230V AC

The Hager ESC428 is a high-quality modular contactor engineered for reliable electrical switching within distribution boards. This device is designed to handle a rated current of 25A and operates on a 230V AC control voltage, featuring a 3NO 1NC contact configuration. Its compact design allows for seamless integration into standard electrical panels, providing a robust solution for power management in both residential and commercial environments.

Advantages

The primary benefit of the Hager ESC428 is its exceptional operational reliability and durability. Built to withstand frequent switching cycles, this contactor ensures consistent performance in demanding electrical systems. Its modular construction simplifies installation on standard DIN rails, saving time and effort during assembly. Furthermore, the device is designed for quiet operation, making it suitable for environments where noise reduction is a priority.

Suitable for

• Controlling lighting circuits in commercial buildings
• Managing heating and ventilation systems
• Automating electrical loads in residential distribution boards
• Switching power for small motors or pumps

When it may not be suitable

This contactor is not intended for high-power industrial applications that exceed its 25A current rating. It is also not suitable for direct current (DC) control circuits, as it is specifically designed for 230V AC operation.

Key specifications

• Rated operational current: 25A
• Contact configuration: 3 Normally Open (NO), 1 Normally Closed (NC)
• Control voltage: 230V AC
• Mounting type: DIN rail
• Number of modules: 2

How to use

The Hager ESC428 should be installed by a qualified electrician in accordance with local electrical regulations. The device is designed to be snapped onto a standard 35mm DIN rail inside a distribution board. Connect the control circuit wires to the coil terminals and the load circuit wires to the power terminals, ensuring that all connections are tightened to the specified torque to prevent overheating. Once installed, the contactor will automatically switch the connected load based on the signal received from the control circuit.

What to consider before purchase

• Verify that the 25A current rating is sufficient for your specific load requirements
• Ensure the 230V AC control voltage matches your existing control system
• Check the available space in your distribution board for a 2-module wide device
• Confirm the contact configuration (3NO 1NC) meets your switching logic needs

Usage recommendations

For optimal longevity and safety, ensure the contactor is installed in a well-ventilated enclosure to prevent heat buildup. Periodically inspect the terminal connections to ensure they remain secure, especially in applications with high vibration or frequent switching.