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


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Overview of RH1B-ULDC24V

The RH1B-ULDC24V is a general-purpose relay with a 24V DC coil voltage, designed for various industrial and commercial applications. It features a single-pole double-throw (SPDT) configuration, capable of switching a wide range of electrical loads.


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

  • COIL A1: Coil terminal A1
  • COIL A2: Coil terminal A2
  • NC: Normally closed contact
  • COM: Common contact
  • NO: Normally open contact

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the RH1B-ULDC24V relay for a visual representation.

Key Features

  • 24V DC Coil Voltage: Operates with a 24V DC control signal, suitable for standard industrial control systems.
  • Single-Pole Double-Throw (SPDT): Provides versatility in switching applications with one normally open and one normally closed contact.
  • Durable Construction: Designed for long-term reliability in various environmental conditions.
  • Compact Size: Offers a compact form factor for easy integration into control panels and equipment.

Note: For detailed technical specifications, please refer to the RH1B-ULDC24V datasheet.


  • Industrial Automation: Ideal for use in industrial automation systems for controlling motors, actuators, and lights.
  • Commercial Equipment: Suitable for switching applications in HVAC systems, lighting controls, and security systems.
  • Power Distribution: Used in power distribution systems for reliable switching of electrical loads.


The RH1B-ULDC24V relay is designed to control electrical circuits with its SPDT configuration, providing reliable switching capabilities in various applications.

Usage Guide

  • Coil Connection: Connect COIL A1 and COIL A2 to a 24V DC power source to energize the relay coil.
  • Contact Connections: Use the NC, COM, and NO terminals for switching the desired electrical loads.

Frequently Asked Questions

Q: What is the maximum current rating for the RH1B-ULDC24V relay?
A: The maximum current rating varies based on the load type and operating conditions. Consult the datasheet for precise details.

Q: Is the RH1B-ULDC24V suitable for automotive applications?
A: No, the RH1B-ULDC24V is typically used in industrial and commercial applications. For automotive applications, consider relays specifically designed for automotive use.


For similar functionalities, consider these alternatives to the RH1B-ULDC24V:

  • G2R-1-E DC24: A 24V DC SPDT relay from Omron, offering similar switching capabilities and reliability.
  • RT424024: This is a 24V DC relay from TE Connectivity, suitable for industrial applications requiring SPDT configuration.


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 1 Form C (SPDT-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 750 Ohms Coil Current 32 mA
Contact Material Silver Cadmium Oxide (AgCdO) Series RH
Length 27.5 mm Width 14 mm
Height 35.6 mm Brand IDEC
Contact Rating 10 A Power Consumption 800 mW
Product Type General Purpose Relays Factory Pack Quantity 1
Subcategory Relays Unit Weight 1.188697 oz

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