Silent contactor 230VAC 3NC 25A AC-7a/b ESC326S

Silent contactor for a wide range of applications

This silent 230VAC contactor with a current of 25A and a 3NC (three normally closed contacts) configuration is a reliable solution for controlling various loads in electrical installations. Designed to minimize noise, it is ideal for applications where discreet operation is key. Its versatility makes it suitable for both professional installers and end-users looking for a solid and efficient solution.

Characteristics and application

This contactor is used to control lighting (incandescent bulbs, fluorescent lamps, LED), resistive and inductive loads. Thanks to the AC-7a/b usage category, it is adapted to work with various types of loads, ensuring safety and long-term performance. The contactor's design minimizes the impact of generated heat on its operation, which translates to stable operation even with intensive use. The contact position indicator facilitates diagnostics and monitoring of the device's status.

Advantages and structural features

• Quiet operation: Minimised noise during contact switching ensures comfortable use.
• Versatility: Ability to control various types of loads – from traditional bulbs to modern LED sources.
• High reliability: Mechanical endurance of 100,000 cycles and electrical endurance of 30,000 cycles guarantee a long service life.
• Safety: Rated insulation voltage Ui 440V and rated impulse voltage Uimp 4000V provide protection against overvoltage and short circuits.
• Compact dimensions: Width of 35.75 mm and depth of 60 mm allow for easy installation in switchboards with limited space.
• Flexible connections: Possibility of connecting flexible wires with a cross-section of 1-6 mm² and rigid wires with a cross-section of 1-10 mm².
• Wide operating temperature range: From -10°C to +50°C enables operation in various environmental conditions.

The contactor operates at a rated operating voltage of 400 V and is controlled by a voltage of 230 V AC. Its rated operating current is 25 A, and the contact configuration includes 3 normally closed (NC) contacts and no normally open (NO) contacts. It is designed for AC-7a/b usage category, and the maximum switching capacity for DUO-compensated fluorescent lamps is 1990 VA.

Compliance and standards

The contactor meets the relevant safety and quality standards, confirming its reliability and compliance with the requirements of modern electrical installations. The IP2X degree of protection provides basic protection against access to live parts.