H12WD4890G

Series:	H12WD
Packaging:	Bulk
Part Status:	Active
Mounting Type:	Chassis Mount
Circuit:	SPST-NO (1 Form A)
Output Type:	AC, Zero Cross
Voltage - Input:	4 ~ 32VDC
Voltage - Load:	48V ~ 660V
Load Current:	90A
Termination Style:	Screw Terminal
Package / Case:	Hockey Puck
Supplier Device Package:	--

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Introduction

Solid-state relays (SSR) are a type of specialized electronic switching device. They are capable of making and breaking electrical connections between two or more electrical circuits in a safe, quick, and efficient manner. The SSR technology is a superior alternative to traditional electromechanical relays and contactors because they reduce wiring complexity, decrease the time it takes to make electrical connections and improve safety.One of the most common Solid-state relays is the H12WD4890G. It is a 48V DC, isolated, low-voltage, single throw, two-phase output relay. It can handle up to 4A at 300V DC and offers load protection for inductive and non-inductive loads. The relay is designed with an additional input signal control circuit for added protection. The relay\'s sensing input is TTL compatible.

Application field

The H12WD4890G is typically used in a wide range of applications such as industrial automation, process control, motor control and power supplies. It is also well suited for applications that require a high power switching solution.The H12WD4890G has a wide range of uses in industrial automation such as controlling motors, pumps, fans, and valves. It can also be used in process control as an input/output signaling device, providing a consistent output signal for various monitoring or automated processes. In addition, the relay is suitable for use in power supplies such as UPSs, switch-mode power supplies, battery chargers, and AC adapters.

Working principle

The H12WD4890G is a solid-state relay that is capable of making and breaking electrical connections between two or more circuits. It uses an optocoupler to isolate the input from the output and provides a fast and efficient switching means.The optocoupler consists of an LED light source and a phototransistor which are optically coupled together. When the input voltage is applied, the LED emits light which triggers the phototransistor to close the circuit and turn on the relay. When the input voltage is removed, the phototransistor turns off and the relay is opened.The H12WD4890G relay also has an additional input signal protection circuit. This circuit is designed to protect the relay from false signals or incorrect input. It consists of a feedback loop that monitors the current output and adjusts voltage accordingly. If the input signal is incorrect, the circuit will shut down the optical coupler and then re-enable it when the input is correct.

Conclusion

The H12WD4890G is a reliable, efficient, and cost-effective solid-state relay. It is a suitable solution for a wide range of applications that require a high power switching solution. The optocoupler used in the H12WD4890G helps to protect the relay from false signals and incorrect input, making it a safe and reliable choice for many applications.

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