Modular contactor SM 340 40A 230V 2NO silent 412559

Universal modular contactor for load control

This modular contactor from Legrand, model SM 340 with a current of 40A and a voltage of 230V, is a reliable solution for controlling various electrical loads. It is suitable for both home and commercial installations. Its compact size and mounting on a TH35 rail make installation and integration with existing infrastructure easy. The design with two normally open contacts (2NO) allows for efficient switching of lighting, heating circuits or pumps.

Functionality and application

The SM 340 contactor is designed to operate at AC 230V, making it compatible with most standard electrical installations. The rated operating current is 40A, and the maximum switching capacity for incandescent lamps is as much as 5000W. The ability to control both lamps and fluorescent lamps (also with compensation) expands its range of applications. A manual override slider provides additional control over the circuit – allowing manual switching of the contactor when service or testing is required. The quiet operation of the device is an important advantage in applications where noise reduction is a priority.

Construction and characteristic features

The contactor has a width of 2 modules (36mm), which allows for efficient use of space in the distribution board. The IP2X degree of protection provides basic protection against contact and ingress of solid objects. Manufactured in accordance with IEC/EN 61095, it guarantees safety and reliability of operation. The possibility of additional equipment expands the functionality of the device, allowing it to be adapted to the specific needs of the installation. The manipulator allows manual adjustment of the contactor contacts in three positions: "ON", "OFF" and "AUTO", which facilitates diagnostics and servicing of the electrical installation.