Zamel STM-25-11 Modular Installation Contactor 25A 1NO+1NC 230V AC

The Zamel STM-25-11 is a high-quality modular installation contactor engineered for precise electrical switching within residential and commercial distribution boards. Designed for mounting on standard DIN rails, this device provides a robust solution for managing electrical loads up to 25A. With a 230V AC control voltage and a versatile 1NO+1NC contact configuration, it ensures reliable performance in various automated systems, contributing to efficient power distribution and long-term operational stability.

Advantages

This contactor stands out due to its compact modular design, which allows for seamless integration into existing electrical cabinets alongside other DIN-rail components. The device is built for durability, offering consistent switching cycles that minimize maintenance requirements. Its clear contact configuration provides flexibility for diverse control applications, while the high-quality materials used in its construction ensure safety and resilience against electrical stress in demanding environments.

Suitable for

• Controlling lighting circuits in residential and office buildings
• Managing heating systems and electric radiators
• Operating ventilation and air conditioning units
• Switching small motors and pumps in domestic installations

When it may not be suitable

This device is not intended for high-power industrial machinery or applications requiring switching currents exceeding 25A. It is also not suitable for DC control circuits, as it is specifically designed for 230V AC operation.

Key specifications

• Rated current: 25A
• Control voltage: 230V AC
• Contact configuration: 1NO (Normally Open) + 1NC (Normally Closed)
• Mounting type: DIN rail (TH35)
• Modular width: Standard modular size

How to use

The Zamel STM-25-11 should be installed by a qualified electrician in accordance with local electrical regulations. The device is snapped onto a standard TH35 DIN rail within a distribution board. Connect the control circuit wires to the designated coil terminals and the load circuit wires to the power terminals, ensuring that all connections are tightened securely to prevent overheating. Verify the wiring against the schematic printed on the device housing before applying power.

What to consider before purchase

• Ensure the control voltage of your system matches the 230V AC requirement
• Verify that the 25A rated current is sufficient for your specific load
• Check available space on the DIN rail within your distribution board
• Confirm that the 1NO+1NC configuration meets your automation logic needs

Usage recommendations

Always ensure the power supply is disconnected before performing any installation or maintenance work on the distribution board to prevent electrical shock.