CMRD4855-10

Series:	CMRD48
Packaging:	Bulk
Part Status:	Active
Mounting Type:	DIN Rail
Circuit:	SPST-NO (1 Form A)
Output Type:	AC
Voltage - Input:	4 ~ 32VDC
Voltage - Load:	48V ~ 530V
Load Current:	55A
Termination Style:	Screw Terminal
Package / Case:	SSR with Integrated Heat Sink
Supplier Device Package:	--

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Solid State Relays

A solid state relay (SSR) is an electrically controlled switch, used to alternate electrical current and power circuits. The CMRD4855-10 solid state relay is specially designed for high current applications up to 40A. It utilizes a triac and opto-coupler for electrical isolation and offers a broad range of electrical and environmental features.

Application Fields

The CMRD4855-10 has an optimum design, making it suitable for multiple industrial applications such as power electronics, motor speed control, lighting control, temperature monitoring, and PCB printing. It is also widely deployed in electric heating systems. Furthermore, It can handle high current withstanding impulses much longer than other types of relays; thus, finding practical application in industrial machinery switching or control systems.

Working Principle

The CMRD4855-10 works on the principle of optically isolated Triac and optocoupler. A built-in Triac in the device is used for switching, while its opto-coupler is used to separate the high power circuit from the control circuit, prohibiting reverse current flow from the load side and eliminating electrical shock hazards.When a current flows through the optocoupler LED, the Triac is triggered and a circuit is created through the LOAD side, thus allowing the desired output voltage. The process of triggering the Triac is known as zero-cross firing; meaning that the Triac will only trigger when the voltage in the input circuit reaches its zero point. This functionality provides clean switching with protection against noises, further ensuring a high quality output.

Conclusion

The CMRD4855-10 is a reliable and robust solid state relay with broad range of field applications and a zero-cross firing mechanism that provides reliable protection and noise free operation. This device is a perfect choice for medium to high current applications and brings added safety and reliability to industrial switching and control systems.

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