Zamel STM-25-31 Modular Contactor 25A 230V AC 3NO 1NC TH35

The Zamel STM-25-31 modular contactor is a high-performance electrical switching device engineered for both residential and industrial power distribution systems. Designed to operate with a 230V AC coil, this contactor provides a robust solution for managing electrical loads up to 25A. Its compact modular design allows for seamless integration into standard electrical cabinets, ensuring reliable performance in demanding environments.

Advantages

This contactor stands out due to its durable construction and reliable switching capabilities, which are essential for maintaining the integrity of electrical installations. The device is built to handle frequent switching operations, making it an ideal choice for automated control systems. Its compatibility with standard mounting rails simplifies the installation process, while the 3NO 1NC contact configuration offers versatile wiring options for various circuit requirements.

Suitable for

• Lighting control systems in commercial and residential buildings
• Heating and ventilation equipment management
• Industrial motor control circuits
• General electrical load switching in distribution boards

This device is not intended for high-voltage industrial power grids exceeding its rated capacity or for applications requiring specialized hazardous environment protection. It should not be used in circuits where the current draw consistently exceeds the 25A threshold, as this may lead to overheating or premature failure of the internal contacts.

Key specifications

• Rated current: 25A
• Coil voltage: 230V AC
• Contact configuration: 3 normally open (NO) and 1 normally closed (NC)
• Mounting type: TH35 rail
• Series: EXTA

To use the Zamel STM-25-31, mount the device onto a standard TH35 DIN rail within a distribution enclosure. Ensure that the power supply is disconnected before performing any wiring. Connect the control circuit to the coil terminals and the load circuit to the main power terminals, ensuring that all connections are tightened securely to prevent loose contacts. Once installed, verify the operation of the contactor by energizing the control coil.

What to consider before purchase

• Verify that your control circuit voltage matches the 230V AC coil requirement
• Ensure the total load current does not exceed the 25A rating
• Confirm available space on the TH35 rail within your electrical panel
• Check if the 3NO 1NC contact configuration meets your specific switching logic needs

Ensure that the installation is performed by a qualified electrician in accordance with local electrical safety regulations to guarantee long-term reliability and safety.