Contactor 40A 4NO 230V

The Legrand CX³ 412553 contactor is a modular device designed for the control of high-power electrical loads. It features 4 poles with 4 normally open contacts, a rated current of 40 amperes, and a control coil of 230 volts AC.

Designed for installation in electrical panels on DIN rail, it allows loads such as heating systems, lighting circuits, and pumps to be controlled by a control signal. Its modular format and front manual override make both panel integration and inspection and maintenance tasks easier.

Legrand CX³ 40-amp contactor with 4 normally open contacts

Reference 412553 belongs to Legrand's modular CX³ contactor range. It incorporates 4 normally open power contacts, so the contacts remain open when the coil is not energized and close when the contactor receives the corresponding control signal.

This configuration makes it possible to switch several conductors simultaneously with a single electrical command, facilitating automation and remote control of different types of loads.

230-volt control coil

The contactor incorporates a 230-volt AC energizing coil. According to Legrand's technical data sheet, the permissible energizing voltage range is between 195 and 253 volts.

When the coil is energized, the internal mechanism changes the state of the power contacts. When the control signal is removed, the contacts return to their corresponding operating position.

40-amp rated current

The Legrand 412553 supports an operating current of 40 amperes in AC-7a or AC-1 category, categories associated with mainly resistive or slightly inductive loads.

For applications in AC-7b or AC-3 categories, the operating current indicated by Legrand is 22 amperes. The contactor must always be selected taking into account the type of load and its utilization category, not only its maximum rated current.

Applications in heating, lighting, and pumps

Legrand recommends this contactor for controlling high-consumption loads, including applications such as electric heating systems, lighting installations, and pumps.

The contactor separates the control circuit from the power circuit, so that a lower-consumption electrical signal can control the connection and disconnection of the main load.

This feature is especially useful in automated installations, electrical panels, energy management systems, and circuits that require frequent switching or control from external devices.

4 poles for circuits up to 400 volts

The device has 4 poles and is designed for a rated operating voltage of 400 volts AC. This configuration allows it to be used in installations where a combined switching operation on several conductors is required.

The 4 main contacts are normally open. The model does not include normally closed main contacts.

Front manual override for testing and maintenance

The contactor includes a front-access manual override after removing the corresponding cover. This mechanism allows testing and maintenance functions to be carried out directly on the device.

The override allows permanent on or off positions without automatic return, which facilitates certain checks during installation, diagnostics, or maintenance work.

3-module modular format

The Legrand CX³ 412553 is designed for mounting on DIN rail in electrical panels and occupies a width equivalent to 3 modules.

It features two rail fastening systems, one at the top and one at the bottom, designed to make installation and removal easier.

It also allows the insertion of a fork-type distribution comb from the top, simplifying certain power supply configurations inside the panel.

Label holder for circuit identification

The front includes a label holder that allows the circuit or load controlled by the contactor to be visually identified. This is especially practical in electrical panels with numerous control and protection devices.

Clear identification makes commissioning, inspection, maintenance, and fault tracing easier.

Compatible with Legrand auxiliaries

The contactor can be fitted with compatible Legrand auxiliaries. The manufacturer specifically indicates the possibility of pairing it with auxiliary reference 412431, allowing signaling or control functions to be expanded according to project needs.

Capacity for different types of lighting

In addition to its general power applications, Legrand provides specific values for different lighting loads. The maximum load indicated for incandescent lamps is 5,000 watts.

For fluorescent lamps, the maximum indicated capacity is 3,100 volt-amperes, reaching 3,400 volt-amperes in duo circuits and 1,400 volt-amperes in certain installations with parallel compensation.

These values should be considered together with the specific characteristics of the luminaires and the circuit to be controlled.

Dimensions and installation

The contactor has a width of 68 millimeters, a height of 94 millimeters, and a depth of 53.4 millimeters. The installation depth indicated by Legrand is 44 millimeters.

Its modular format allows it to be integrated alongside miniature circuit breakers, residual current devices, time switches, impulse relays, and other protection and automation devices inside the electrical panel.

Protection and standards

The Legrand 412553 has an IP2X protection rating and is manufactured in accordance with IEC/EN 61095, a standard specific to electromechanical contactors intended for domestic and similar applications.

Technical characteristics of the Legrand 412553

• Brand: Legrand.
• Range: CX³.
• Reference: 412553.
• EAN: 3245064125536.
• Product type: modular power contactor.
• Number of poles: 4.
• Normally open contacts: 4.
• Normally closed contacts: none.
• Operating current AC-7a or AC-1: 40 amperes.
• Operating current AC-7b or AC-3: 22 amperes.
• Rated operating voltage: 400 volts AC.
• Rated coil voltage: 230 volts AC.
• Energizing voltage range: between 195 and 253 volts.
• Mounting: DIN rail.
• Width: 3 modules.
• Physical width: 68 millimeters.
• Height: 94 millimeters.
• Depth: 53.4 millimeters.
• Installation depth: 44 millimeters.
• Protection rating: IP2X.
• Front manual override: yes.
• Label holder: yes.
• Auxiliary add-on possible: yes.
• Compatible auxiliary indicated by Legrand: reference 412431.
• Maximum load for incandescent lamps: 5,000 watts.
• Maximum load for fluorescent lamps: 3,100 volt-amperes.
• Standard: IEC/EN 61095.

Modular contactor for automating high-power loads

The Legrand CX³ 412553 combines 4 normally open contacts, a capacity of up to 40 amperes, and a 230-volt control coil, offering a compact solution for the electrical control of heating, lighting, pumps, and other compatible loads.

Its DIN rail mounting, 3-module format, front manual override, label holder, and possibility of adding auxiliaries make it easy to integrate into residential, commercial, and other electrical panels that require reliable, centralized switching of power circuits.