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General Purpose Relays Relay Plug-In DPDT 10A 120VAC


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Overview of RH2B-ULAC110-120V

The RH2B-ULAC110-120V is a general-purpose relay with AC coil voltage of 110-120VAC. It is designed for use in various control and switching applications, providing reliable and remote control of electrical circuits.


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

  • A1: Coil terminal 1
  • A2: Coil terminal 2
  • 11 & 21: Normally Closed (NC) contacts
  • 14 & 24: Normally Open (NO) contacts
  • 12 & 22: Common contacts

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the RH2B-ULAC110-120V relay for a visual representation.

Key Features

  • General-Purpose Relay: Suitable for a wide range of control and switching applications.
  • AC Coil Voltage: Operates with 110-120VAC coil voltage, offering compatibility with standard AC power systems.
  • Remote Control: Enables remote control of electrical circuits, providing flexibility in system operation.
  • Durable Construction: The RH2B-ULAC110-120V relay is built to withstand frequent switching and prolonged usage.
  • Switching Capacity: Capable of switching both AC and DC loads for versatile application use.

Note: For detailed technical specifications, please refer to the RH2B-ULAC110-120V relay datasheet.


  • Industrial Automation: Suitable for control and automation systems in industrial environments.
  • HVAC Systems: Used in heating, ventilation, and air conditioning systems for control and switching functions.
  • Lighting Control: Applications include lighting control in commercial and residential settings.


The RH2B-ULAC110-120V relay is a versatile component for remote control and switching of electrical circuits. It provides reliable operation in various applications, making it an essential part of control systems.

Usage Guide

  • Coil Connection: Connect the coil terminals A1 and A2 to the AC power supply (110-120VAC).
  • Contact Wiring: Use the NO, NC, and Common contacts based on the switching requirements of the circuit.
  • Protection: Follow proper guidelines for protecting the relay from voltage spikes and overcurrent conditions.

Frequently Asked Questions

Q: What is the switching capacity of the RH2B-ULAC110-120V relay?
A: The relay is capable of switching both AC and DC loads with appropriate ratings based on the specific model and configuration.

Q: Can the RH2B-ULAC110-120V relay be used for controlling high-power industrial equipment?
A: Yes, the relay is suitable for controlling various industrial equipment within its specified ratings and operational parameters.


For similar functionalities, consider these alternatives to the RH2B-ULAC110-120V relay:

  • OMRON G2R-1A-E-AC110: This OMRON relay offers similar remote control and switching capabilities with an AC coil voltage of 110VAC.
  • Panasonic JS1A-12V: A general-purpose relay with 12VDC coil voltage, providing flexibility in low voltage control 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 110 VAC to 120 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 Current 10.8 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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