SR4M4018

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Power Relays, Over 2 Amps: SR4M4018 Application Field and Working Principle

The SR4M4018 is one of the leading models in the high-current power relay series produced by CR Magnetics. It is a 4-pole, single-phase, relay designed for working currents that exceed 2 amps. It is mainly used in contactors, circuit breakers, and overcurrent protection devices as an actuator. This relay is an essential component in motor control and instrumentation applications, and its high-current capacity makes it suitable for electronics or power-related applications.

The SR4M4018 power relay provides a variety of functions and advantages. It is constructed using tin-plated copper and silver-plated contact surfaces, which provide reliable and durable switching performance. The relay is also designed to meet IEC, CSA, VDE, and UL ratings and certifications, and it is suitable for use in a wide variety of applications. Additionally, it is designed to provide quiet operation and has a wide temperature range of -40° C to +85° C.

The SR4M4018 is also equipped with a variety of features and capabilities that make it a valuable addition to any application. Its voltage drop is low, and it has an adjustable voltage input and adjustable switching times. It also features an anti-shock protection feature and is designed for low and medium-load applications such as auxiliary light and appliances. Its noise immunity and dielectric strength are high, and it is designed to have a long life. Additionally, the relay is highly resistant to heat and vibration.

The SR4M4018 is designed to provide a reliable, cost-effective, and efficient solution for high-current applications. Its working principle is based on the magnetic field generated by the input current. When the input current passes through the coil, it creates a magnetic field, which is used to open and close the contact terminals. The activation of the terminals is controlled by the presence or absence of the current. The contact terminals are designed to open or close depending on the direction of the coil’s magnetic field. When the direction of the magnetic field changes, the terminals open or close accordingly, allowing the circuit to be switched on and off as desired.

In summary, the SR4M4018 power relay offers reliable, efficient, and cost-effective solutions for applications requiring high current. Its magnetic base design allows for quiet operation and provides superior temperature resistance. The relay is designed to meet IEC, CSA, VDE, and UL ratings and certifications, and it has an adjustable voltage input and adjustable switching times. Its low voltage drop, noise immunity, and dielectric strength make it suitable for a wide variety of applications, and its anti-shock protection feature provides additional reliability. Additionally, the SR4M4018 is designed to provide a long life with high levels of heat and vibration resistance.

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