Hager ESC125 25A 1 Pole 1NO Modular Contactor 230V Coil

Description

Remote load switching, one module wide.

The Hager ESC125 is a 25A, 1 pole modular contactor with a single normally open (1NO) contact and a 230V AC coil. It switches a load on and off from a separate control circuit, such as a thermostat, timer or switch, making it a compact way to control lighting, heating, ventilation and small motor loads from a distribution board.

Key Features

• 25A rated current (AC-7a)
• 1 pole, single normally open (1NO) contact
• 230V AC control coil, 50Hz
• Single module (17.85mm) width
• Utilisation categories AC-7a 25A / AC-7b 8.5A
• Screw terminals, 1-10mm2 rigid / 1-6mm2 flexible
• 100,000 mechanical operations, 30,000 electrical cycles
• Rated insulation voltage Ui 250V, impulse withstand Uimp 4kV
• DIN rail mounting

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What Is a Modular Contactor?

A contactor is an electrically operated switch: applying voltage to its coil closes the power contact and switches the load. The ESC125 has a normally open (1NO) contact, so the circuit is off until the 230V coil is energised. That lets a low-power control signal switch a larger load safely from a separate circuit, which is the basis of timed lighting, off-peak heating and remote switching.

Compact Switchboard Control

At one module wide, the ESC125 fits neatly into a distribution board without consuming space. It mounts on standard 35mm DIN rail and accepts rigid conductors up to 10mm2 through screw terminals. Its AC-7a rating covers resistive household loads at 25A, while the AC-7b rating of 8.5A applies to motor loads with higher inrush.

Built to Last

Rated for 100,000 mechanical operations and 30,000 electrical cycles, the ESC125 is built for the frequent switching a control contactor sees over its life. An operating temperature range of -10 to 50 degrees Celsius suits it to a range of Australian installation environments.

Q: What does the Hager ESC125 do?
A: It is a modular contactor that switches a load on and off from a separate control circuit. Energising its 230V coil closes the normally open contact, switching up to 25A.

Q: What is the difference between the AC-7a and AC-7b ratings?
A: AC-7a covers largely resistive household loads and is rated 25A on the ESC125. AC-7b covers motor loads with higher inrush and is rated 8.5A.

Q: Can the ESC125 be controlled by a timer or thermostat?
A: Yes. Its 230V AC coil can be switched by a timer, thermostat or manual switch, making it suitable for timed lighting, off-peak heating and similar control tasks.