Silent contactor 230VAC 4NO 40A AC-7a/b ESC440S

Silent contactor for domestic and industrial applications

This 4-pole silent contactor with a rated current of 40A, designed for 230VAC voltage, is a reliable solution for controlling electrical circuits. It is ideally suited for both home installations and more demanding industrial applications. The noise-free design ensures comfortable use, eliminating irritating sounds during switching.

Characteristics and application

The ESC440S contactor is designed for frequent switching of electrical circuits, especially those with inductive loads such as motors or transformers. The use category AC-7a/b means that it is optimal for controlling lighting circuits and sockets. Thanks to four normally open contacts (4NO), it allows simultaneous switching of several circuits. Its compact dimensions (3 modules wide) allow for easy installation in electrical panels.

Key features and benefits

• Silent operation: Eliminates acoustic interference, which is particularly important in living spaces.
• High reliability: Ensures long-lasting and trouble-free operation in various conditions.
• Versatility: Suitable for controlling various types of loads, including lighting, sockets and electrical appliances.
• Compact dimensions: Allow easy installation even in limited spaces.
• Designed for mounting on TH35 rail: Quick and easy mounting in standard distribution boards.
• Rated operating current 40A: Allows safe control of most common loads.
• Wide range of rated voltages: Operates stably at 400V AC.
• Possibility of additional equipment: Allows the contactor to be adapted to specific application needs.

Technical parameters in practice

An installation depth of 60 mm ensures convenient mounting, and the lack of a manual control slider increases safety – preventing accidental switching on or off of the circuit. The rated impulse voltage of 4000 V guarantees resistance to overvoltage, and the protection class IP2X protects against touching with fingers and access by small solid objects. The maximum switching capacity for incandescent lamps is as much as 4000 W, allowing control of even large lighting installations. Additionally, this contactor is compatible with various types of fluorescent lamps (1900 VA standard, 3000 VA with DUO compensation and 1300 VA with parallel compensation).