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


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Overview of RH2B-ULAC24V

The RH2B-ULAC24V is a plug-in relay with a 24V AC coil voltage, designed for reliable switching in industrial control systems.This relay offers robust performance and is suitable for various applications requiring switching of AC loads.


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

  • A1:Coil End 1
  • A2:Coil End 2
  • 13:Common Terminal
  • 14:Normally Open Contact
  • 23:Normally Closed Contact
  • 24:Common Terminal
  • 13:Normally Open Contact
  • 14:Normally Closed Contact
  • 23:Common Terminal
  • 24:Normally Open Contact
  • 23:Normally Closed Contact

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the RH2B-ULAC24V relay for a visual representation.

Key Features

  • Plug-In Relay:The RH2B-ULAC24V is a plug-in relay, allowing for easy installation and replacement in control panels.
  • 24V AC Coil Voltage:Designed to operate with a 24V AC coil voltage, suitable for industrial AC control applications.
  • High Switching Capacity:This relay offers high switching capacity, capable of handling AC loads up to a specified current and voltage.
  • Durable Construction:With its robust design,the RH2B-ULAC24V provides reliable operation in harsh industrial environments.
  • Compact Size:Features a compact form factor, optimizing space utilization in control panels.

Note:For detailed technical specifications,please refer to the RH2B-ULAC24V datasheet.


  • Industrial Control Panels:Ideal for use in industrial control panels for switching AC loads, such as motors and lights.
  • Automation Systems:The RH2B-ULAC24V is suitable for automation systems requiring reliable relay switching.
  • HVAC Systems:Used in HVAC (Heating, Ventilation, and Air Conditioning) systems for controlling compressor and fan operation.


The RH2B-ULAC24V plug-in relay provides robust switching capability for AC loads in industrial applications, ensuring efficient control and operation.

Usage Guide

  • Coil Connection:Connect terminals A1 and A2 to the 24V AC power supply to energize the relay coil.
  • Contact Connections:Connect terminals 13 and 14 for normally open contact operation,and terminals 23 and 24 for normally closed contact operation.
  • Load Connection:Connect AC loads to the appropriate terminals (common, normally open, or normally closed) as per the application requirements.

Frequently Asked Questions

Q:What is the maximum switching current of the RH2B-ULAC24V?
A:The RH2B-ULAC24V can switch currents up to a specified maximum value, typically detailed in the datasheet.

Q:Can the RH2B-ULAC24V be used with other coil voltages?
A:Yes,variants of the RH2B series are available with different coil voltages to suit various application requirements.


For similar functionalities,consider these alternatives to the RH2B-ULAC24V:

  • OMRON LY2N-AC24:This is another plug-in relay from OMRON with similar specifications and performance characteristics.
  • FINDER plug-in relay from FINDER offering comparable features and reliability.
  • PANASONIC JS1-24V-F:A plug-in relay from PANASONIC known for its robustness and performance in industrial applications.


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 VAC
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 153 Ohms Coil Current 60.5 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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