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General Purpose Relays Relay Plug-In DPDT 10A 24VDC


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Overview of RH2B-ULDC24V

The RH2B-ULDC24V is a general-purpose relay with a 24V DC coil voltage and 10A contact rating. It is designed for use in various control and switching applications where a reliable and durable relay is required.


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

  • COM: Common terminal for the switch contacts
  • NO: Normally open contact
  • NC: Normally closed contact
  • COIL +: Positive terminal for the coil voltage
  • COIL -: Negative terminal for the coil voltage

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the RH2B-ULDC24V relay for a visual representation.

Key Features

  • 24V DC Coil Voltage: Designed for operation with a 24V DC power supply, suitable for industrial and control applications.
  • 10A Contact Rating: Capable of switching loads up to 10A, providing versatility for various switching tasks.
  • Durable Construction: The RH2B-ULDC24V relay is built to withstand switching operations and environmental conditions for long-term reliability.
  • Compact Size: With a compact form factor, it can be easily integrated into different systems and control panels.
  • High Insulation Resistance: Provides high insulation resistance for safe and reliable operation.

Note: For detailed technical specifications, please refer to the RH2B-ULDC24V relay datasheet.


  • Industrial Control Systems: Suitable for use in industrial automation, machinery control, and process equipment.
  • Power Management: Used in power distribution systems, power supplies, and equipment requiring remote switching capabilities.
  • Home Automation: Can be utilized in home automation and smart home systems for controlling lights, fans, and other appliances.


The RH2B-ULDC24V relay is designed to control the flow of electrical power in various applications, providing a reliable switching solution for both low and high-power circuits.

Usage Guide

  • Coil Connections: Connect the COIL+ and COIL- terminals to the 24V DC power supply to energize the relay coil.
  • Contact Connections: Use the COM, NO, and NC terminals to make or break the electrical circuit as per the application requirements.

Frequently Asked Questions

Q: What is the maximum switching frequency of the RH2B-ULDC24V relay?
A: The maximum switching frequency is typically specified in the relay's datasheet and may vary based on the specific model.

Q: Can the RH2B-ULDC24V relay be used in automotive applications?
A: Yes, the RH2B-ULDC24V relay can be employed in certain automotive systems and aftermarket modifications where a 24V control circuit is required.


For similar functionalities, consider these alternatives to the RH2B-ULDC24V relay:

  • OMRON G2R-24VDC: A reliable relay with a 24V DC coil and similar contact rating for industrial and control applications.
  • Panasonic ALQ324: This relay offers comparable specifications and performance with a 24V DC coil, suitable for various switching tasks.


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 2 Form C (DPDT-NO, NC) Contact Current Rating 10 A
Contact Termination Plug In Mounting Style Panel Mount
Switching Voltage 220 VAC, 30 VDC Coil Type Non-Latching
Coil Resistance 650 Ohms Coil Current 36.9 mA
Contact Material Silver Cadmium Oxide (AgCdO) Series RH
Length 27.5 mm Width 21 mm
Height 35.6 mm Brand IDEC
Contact Rating 10 A Power Consumption 900 mW
Product Type General Purpose Relays Factory Pack Quantity 1
Subcategory Relays

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