Modular contactor with manual control, DIN rail mounting 25A, 4NO contacts ST25-40-M

Modular contactor – reliable circuit control 25A

This modular contactor, designed for mounting on a 35mm rail, is a key element in electrical installations requiring remote and manual control. It provides safe and efficient switching of circuits with a current of up to 25A, and its construction makes it ideal for both professional installers and end users. The contactor is particularly useful in applications where control over loads is needed, such as lighting, electric heaters or small industrial devices.

Functionality and application

The ST25-40-M contactor stands out for its versatility thanks to the combination of four normally open contacts (4NO). This allows you to connect multiple receivers to a single contactor, which translates into saving space in the distribution box and reducing costs. The built-in slider for manual operation allows you to manually turn the circuit on or off – useful in emergency situations or during maintenance. The control voltage of 230V AC is a standard in most electrical installations, which facilitates integration with existing systems.

It will find application in:

• Lighting (e.g. controlling outdoor lighting)
• Heating systems (e.g. electric heaters)
• Small industrial devices
• Home automation (e.g. controlling blinds)
• Installations requiring remote control and manual switching on/off

Characteristics and benefits

The contactor's construction based on electromagnetic technology guarantees high reliability and long life. A width of 2 modules allows for efficient use of space in the distribution box. The activity indicator facilitates visual control of the contactor's status – a red marker indicates that the circuit is on. Compliance with IEC 61095 confirms the safety and quality of the product. In addition, the high AC1 switching capacity of up to 9kW allows you to handle a variety of loads. The contactor is also characterized by high resistance to surge currents and a wide range of operating temperatures (-25°C to +50°C), making it suitable for use in various environmental conditions. The rated insulation voltage of 500V AC provides additional safety.