Miniature Latching Relay G5Q-HR Contributes to Low Power Consumption of Equipment

Responding to climate change has become an urgent issue, and lowering power consumption further is required in various applications. The challenge is not only to optimize system control, but also to reduce the power consumption of the equipment itself.
This page introduces the compact latching relay/single-stable relay G5Q-HR, which contributes to lower power consumption of equipment, and provides examples of low-power consumption drive circuits for effective use of the relay.

Do you have any of these needs?

(1) Want to reduce power consumption of equipment. (2) Want to handle various inrush current loads. (3) Want to make equipment smaller and more multifunctional. => G5Q-HR compact power relay supports solutions to problems with three features.

G5Q-HR compact power relay supports
solutions to needs with three features.

G5Q-HR

Latching function added to the long-selling compact G5Q series!
Certified to handle various inrush current ratings

Rated load	10 A / 277 VAC
Contact form	SPST-NO (1a)
Electrical durability^*1	50,000 times (8 A 277 VAC), 10,000 times (10 A 277 VAC)
Type	Single-stable, Single-winding latching (G5QU), Double-winding latching (G5QK)
Certification of standards	Conforms to TV8 ratings, etc.

*1 For resistive load, 23°C, 1 sec ON / 9 sec OFF

1 Low power consumption: Equipped with latching function. 2 High inrush current tolerance: Supports multiple inrush current loads. 3 Compact package: Adopted G5Q package (L20.3xW10.3xH15.8)

If you want to know the low power consumption drive circuit examples immediately, click here to download.

●Feature 1: Low power consumption

Latching function is newly incorporated into the long-selling G5Q series. A latching relay can maintain the contact (output) ON state with only one pulse of current and achieve a significant reduction in power consumption. By reducing the drive power, the heat generated by the component itself can also be reduced.

Standard single-stable relay: Current supply to the coil must be maintained to keep the contact (output) ON. Constant current supply to the coil required => G5Q-HR latching relay (single-winding coil): Only one pulse of current to the coil is required to keep the contact (output) ON. ON by 1 pulse of current / OFF by 1 pulse of current

For example, comparing the power consumption speed of 3 batteries (1900mA/h)^*3

Single-stable relay When constantly driven (current consumption is determined by the applied time): Approx. 0.7 days => Latching relay When set/reset pulses are turned on and off 5 times/day at 100 ms each (current consumption is determined by the number of switching cycles): Approx. 168 years Approx. 610,000 switching cycles

*2 Comparison of power consumption of G5Q-1A single-stable relay and G5Q-HR latching relay (single-winding) when the contact is kept ON for 24 hours each (according to OMRON's research as of February 2024)
*3 Calculated theoretically when 3 batteries (1900 mA/h) are consumed by G5Q-1A DC5 (single-stable type) in constant drive and when G5Q-HR DC5 (single-winding latching type) is turned on and off a certain number of times. Assuming ON/OFF of lighting equipment as a usage case, and assuming 5 times/day for a latching relay (because constant drive of a latching relay consumes only the current of one pulse at the time of ON, which is not enough to consume the battery).
Note: These are theoretical figures based on the power consumption of the relay coil only. Please keep in mind that in reality, there are natural discharges of batteries and voltage conversion losses.

●Feature 2: High inrush current resistance

It can be applied for high inrush current loads such as lighting (lamp) loads and power supply (capacitor) loads.

Supports lamp load (TV8 certified) and capacitor load (IEC 60669-2-1 certified).
Also compatible with E-ballast 3 A (single-stable type) and 5 A (latching type).

Note: Please evaluate the product on the customer's actual equipment before considering incorporation.

●Feature 3: Compact package

Smaller than Omron's conventional products, contributing to downsizing and adding functions to equipment.

Conventional product (Footprint 368.3 mm2) => G5Q-HR (Footprint 209.9 mm2): Footprint Approx. 43% reduced. Miniaturization: For miniaturization and space saving of PCB. Multi-functionalization: More functions can be added with the same PCB size

*4 Comparison with typical latching relay model G5RL (research as of March 2024)
*5 Dimensions above are maximum values.

OMRON's Latching Relay Lineup

There are other products in our product line besides G5Q-HR. Please consider your choice according to your application.

Click here for details of each product (G6K, G6S, G6B, G5Q, G6C, G2R, G5RL-U/-K)

Examples of Low Power Consumption Drive Circuit

Compared to semiconductor components, mechanical relays tend to consume more power, but by devising circuit control, it is possible to design them with lower power consumption. Please refer to the following documents for design reference for examples and concepts of low power consumption drive circuits for latching relays (single- and double-winding coil) and single-stable relays.