Modular contactor 40A 2 normally closed and 2 normally open contacts (3 modules, 4-pole) RD 40-22-230V AC/DC 002464022

Modular contactor – reliable switching of electrical circuits

This ETI RD 40-22 modular contactor is a compact device designed for frequent switching of electrical circuits. It finds application both in home installations and in more demanding industrial or commercial environments. Its versatility results from the possibility of powering it with both alternating current (AC) and direct current (DC). The 3-module design makes it easy to mount on a standard TH35 rail, which saves space in the distribution board.

Construction and functionality

This contactor has two normally open (NO) and two normally closed (NC) contacts, providing great flexibility in configuring control circuits. The rated current of 40A allows handling loads of medium power, and the rated voltage in the range of 230…400V AC ensures compatibility with most standard electrical installations. The control voltage of 230V AC/DC allows easy control of the contactor with various signal sources. The lack of a slider for manual operation means that the device is designed for automatic operation, which increases the safety and reliability of the system. The IP20 protection class provides basic protection against touch and contamination.

Applications and benefits

The RD 40-22 modular contactor is an ideal solution for:

• Heating installations: controlling electric heaters, heating mats.
• Lighting: switching on and off large groups of lighting fixtures.
• Electric motors: controlling motors with power adapted to the contactor's rated current.
• Home automation: integration with smart home systems for remote control of devices.
• Photovoltaic systems: as an element of a backup system, allowing switching to the grid in the event of an inverter failure or problems with solar energy production.

It is worth noting that the possibility of additional equipment increases the functionality of the contactor, allowing it to be adapted to the specific needs of a given application. Solid construction and high quality workmanship guarantee long-lasting and trouble-free operation of the device, which translates into savings and peace of mind for the user. Mechanical endurance at the level of 3 million cycles confirms its reliability even with intensive use.