PRD-7DH0-24

Turn On Voltage (Max):	18 VDC
Coil Resistance:	288 Ohms
Coil Power:	2 W
Contact Material:	Silver (Ag)
Operating Temperature:	-55°C ~ 80°C
Termination Style:	Screw Terminal
Mounting Type:	Chassis Mount
Features:	Insulation - Class B
Release Time:	20ms
Operate Time:	40ms
Turn Off Voltage (Min):	2.4 VDC
Series:	PRD
Switching Voltage:	125VDC - Nom
Contact Rating (Current):	20A
Contact Form:	DPST-NO (2 Form A)
Coil Voltage:	24VDC
Coil Current:	84.0mA
Coil Type:	Non Latching
Relay Type:	General Purpose
Part Status:	Active
Packaging:	Bulk

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Power Relays, Over 2 Amps: PRD-7DH0-24 Application Field and Working Principle

The PRD-7DH0-24 power relay is designed for applications with an AC or DC input of more than two amps. This product is highly versatile and can be used in various fields, such as automotive, military, home automation, industrial automation, and more. Its active circuit is a combination of resistors, capacitors, and transistors which can be configured to interface with a variety of inputs.

Characteristics

The PRD-7DH0-24 power relay measures 43 x 43 x 43 mm and weighs 250 grams. Its coil has a resistance of 24 ohms and can handle a maximum of 2 amps continuous current. It can be activated with AC or DC voltages of up to 250 volts. It has an insulation voltage of 500 volts, maximum contact resistance of 50 milli ohms, and maximum contact current of 2 amps. The power relay is available in two types: a single-pole type with 4 Normally Open contacts, and a multi-pole type with 8 Normally Open contacts.

Advantages and Applications

The PRD-7DH0-24 power relay offers several advantages. It is highly reliable due to its protection against shock, vibration, and temperature extremes. It has a long service life and its contacts can endure up to one hundred thousand operations. Additionally, its coil consumes low power enabling it to handle DC as well as AC signals. Due to its versatile design, the PRD-7DH0-24 power relay can be used in a variety of applications such as automotive, military, home automation, industrial automation, and more.

Working Principle

The working principle of the PRD-7DH0-24 power relay is relatively simple. When the PRD-7DH0-24 is activated, its active circuit — a combination of resistors, capacitors, and transistors — is connected to the input. This causes the coil to be energized, generating a magnetic field which then activates the internal mechanism — the contact arm — that will cause the Normally Open contact to close. When the input is removed from the relay, the contact arm will open, and the contact will return to its Normally Open state.

Conclusion

The PRD-7DH0-24 power relay is a versatile device suitable for a wide range of applications. It can handle up to a maximum of 2 amps of AC or DC input and is highly reliable and long-lasting. Its working principle is relatively simple, as it is activated by an external signal and its contact arm moves to close the contacts when the input is applied. Therefore, the PRD-7DH0-24 power relay is an ideal choice for a broad range of applications where reliability is a priority.

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