Modular contactor with manual control, rail mounting 40A, 4NO contacts, ST40-40-M. (Coil voltage not specified)

Modular contactor with manual control – reliable circuit switching

This modular contactor combines functionality, safety and ease of use. Designed for mounting on a 35 mm rail, it is ideal for both home and industrial installations. It allows for remote and manual circuit control, which is particularly useful during maintenance or installation work. Equipped with four normally open contacts (4NO), it provides flexibility in configuring various circuits.

Construction and application

The ST40-40-M contactor is an electromagnetic device designed for frequent switching of electrical circuits. Its modular design makes it easy to install and integrate with other installation elements. The manual control slider allows for direct switching of the contacts, regardless of the coil status – this solution is appreciated by installers during testing and servicing of installations. The rated operating current of 40A guarantees safe operation with various loads, and the maximum switching capacity for incandescent lamps is as high as 16000 W.

Key features and benefits

• Versatility: The ability to control remotely and manually gives you full control over the circuit. The manual slider allows for quick testing and servicing without having to connect the control power supply.
• Safety: Rated insulation voltage of 500 V AC and rated impulse withstand voltage of 4 kV provide high resistance to overvoltages and protect the installation from damage. Protection class IP20 protects against accidental contact.
• Efficiency: Rated operating current of 40 A allows for safe switching on of devices with significant power.
• Compactness: A width of only 3 modules (54 mm) allows for efficient use of space in the switchgear cabinet.
• Durability: High quality workmanship guarantees long service life and reliable operation for many years. Switching frequency up to 100 times a day ensures comfortable use even with intensive use.
• Signaling: Activity indicator informs about the current status of the contactor, making diagnostics and control of the device easier.

The ST40-40-M contactor is a solid and reliable solution for anyone looking for a safe and effective way to control electrical circuits. Its versatility makes it suitable for many different applications – from simple home installations to more complex industrial systems.