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General Purpose Relays Relay Plug-In 4PDT 10A 24VDC


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Overview of RH4B-UDC24V

The RH4B-UDC24V is a versatile general-purpose relay designed for switching applications. With a 24V DC coil voltage and a 4-pole, 4-throw configuration, it is ideal for controlling a variety of devices in industrial and commercial environments.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • 1-4: Coil Terminals (Coil A and Coil B connections)
  • 5-8: Common Terminals (COM)
  • 9-12: Normally Open Terminals (NO)
  • 13-16: Normally Closed Terminals (NC)
  • GND: Ground
  • VCC: Positive Power Supply (24V DC)

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the RH4B-UDC24V relay for a visual representation.

Key Features

  • 4-Pole, 4-Throw Configuration: Provides four independent switching channels for versatile control applications.
  • 24V DC Coil Voltage: Operates with a 24V DC control signal, making it suitable for various automation and control systems.
  • High Switching Capacity: Capable of handling up to 5A at 250V AC, suitable for switching high-power loads.
  • Durable Design: Built for reliability with a long mechanical and electrical life, ensuring consistent performance over time.
  • Compact Size: Features a space-saving design that fits into tight spaces without compromising functionality.

Note: For detailed technical specifications, please refer to the RH4B-UDC24V datasheet.


  • Industrial Automation: Ideal for use in industrial control systems to switch devices and manage operational processes.
  • Commercial Equipment: Suitable for controlling various commercial equipment such as HVAC systems and lighting controls.
  • Home Automation: Can be used in home automation systems for tasks like switching appliances, lighting, and security systems.


The RH4B-UDC24V is a general-purpose relay with a 4-pole, 4-throw configuration and a 24V DC coil. It is designed to switch electrical signals and control high-power devices in various applications.

Usage Guide

  • Power Supply: Connect VCC (Pin 7) to the 24V DC power supply and GND (Pin 6) to ground.
  • Control Signal: Apply a 24V DC control signal to the coil terminals (Pins 1-4) to activate the relay.
  • Load Connections: Connect your load to the common (COM) terminals (Pins 5-8) and choose between normally open (NO) or normally closed (NC) terminals (Pins 9-12 and 13-16) for the switching operation.

Frequently Asked Questions

Q: What is the maximum load current for the RH4B-UDC24V relay?
A: The RH4B-UDC24V relay can handle up to 5A at 250V AC for switching loads.

Q: Can the RH4B-UDC24V be used in a 12V DC system?
A: No, the RH4B-UDC24V is specifically designed for 24V DC operation. For a 12V DC system, consider a relay with a 12V DC coil voltage.


For similar functionalities, consider these alternatives to the RH4B-UDC24V:

  • RH4B-UDC12V: A similar relay from the same series with a 12V DC coil voltage, offering comparable switching capabilities.
  • G5V-1-DC24: A 24V DC relay from Omron with similar features, including a 4-pole configuration and high switching capacity.
  • JQC-3FF-S-24V: A 24V DC general-purpose relay with similar specifications for switching applications in various systems.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category General Purpose Relays RoHS True
REACH Details Product Power Relays
Type Compact Coil Voltage 24 VDC
Relay Contact Form 4 Form C (4PDT-NO, NC) Contact Current Rating 10 A
Contact Termination Plug In Mounting Style Panel Mount
Switching Voltage 220 VAC, 30 VDC Coil Termination Plug In
Coil Type Non-Latching Coil Resistance 388 Ohms
Coil Current 62 mA Contact Material Silver Cadmium Oxide (AgCdO)
Series RH Length 41 mm
Width 27.5 mm Height 35.6 mm
Brand IDEC Contact Rating 10 A
Power Consumption 1.5 W Product Type General Purpose Relays
Factory Pack Quantity 1 Subcategory Relays

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