Silent contactor 230VAC 4NO 25A AC-7a/b ESC425S

Modular contactor for reliable circuit control

This four-pole Hager ESC425 modular contactor is a reliable solution for controlling circuits with a current of up to 25A. It is ideal for electrical installations in residential, commercial buildings and industrial applications where frequent switching of the load is required. Thanks to its compact size (2 modules) it is easy to mount in a distribution board.

Functionality and application

The ESC425 contactor is designed to control various types of receivers, such as lighting, ventilation, pumps or electric heaters. It has four normally open contacts (4NO), allowing independent control of multiple circuits simultaneously. Its construction provides high mechanical and electrical strength, guaranteeing long-lasting and trouble-free operation. This allows installers to be confident in the quality of workmanship, and end-users – safety of use.

Key features and benefits

• High reliability: Ensured by the reputable manufacturer – Hager – and solid construction.
• Versatility: Suitable for controlling various loads, including lighting, ventilation and heating devices.
• Compact dimensions: Occupies only 2 modules in the distribution board, making it easy to install even in limited spaces.
• 4 normally open contacts (4NO): Allow controlling multiple circuits independently.
• Adapted to work with different types of loads: Will work with incandescent bulbs, fluorescent lamps, as well as modern LED light sources.
• Safety: Compliance with standards ensures safe operation of the device.
• Easy installation: Quick and convenient mounting on a DIN rail using screw terminals.

Technical parameters in practice

The contactor operates at a rated voltage of 230V AC and a current of 25A. Its switching capacity for incandescent bulbs is 1900W, and for fluorescent lamps – 950 VA (up to 1990 VA with compensation). The rated insulation voltage Ui is 440V, and the impulse voltage Uimp is 4kV. The width of the contactor is 35.75 mm, and the depth is 60 mm – dimensions allowing easy adaptation to the existing electrical installation. The degree of protection IP2X provides basic protection against touching and ingress of solid objects.