vol.283 August 2024
OMRON’s relays safely and efficiently support inverter
circuits that support society
Energy-saving and efficiency improvements have been made to various equipment used in society, such as air conditioners, conveyors, refrigerators, and power infrastructure equipment, and inverters (circuits) are widely used to achieve optimal control.
Relays are used to control inverters for inrush current control at power-on. OMRON uses various analysis technologies to achieve the relay performance required for inverter control. We support devices that serve as a secure foundation for society by providing optimal relays.
A large inrush current flows through the inverter circuit and
can be handled in two ways.
Configure inrush current protection circuit with relay and resistor
Inrush current
Inrush current is passed through a circuit that incorporates a resistor to buffer the inrush current and charge the capacitor
Rated current
After reaching a stable current value, current is supplied to the motor, compressor, etc.
Directly pass inrush current through a relay
The relationship between inrush currents and relays is presented here with a specific focus on renewable energy power supply systems.
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OMRON’s relays are ideal for configuring power switching and inrush current protection circuits for inverter circuits.*1
OMRON’s relays are compact, high-capacity, and highly resistant to inrush currents by utilizing various analysis technologies for all aspects of magnetic circuits and contacts as well as terminal component shapes and contact operation, and by optimizing the combination of contact materials, component design, and processing and assembly technologies.
For inrush current protection bypass applications in
the case of
480 VAC / Input:
Supports 240 A inverter load
(0-P, 3 ms or more rise time)
- 1-pole 36 A switchable
- Compact, low-profile power relay
- Energizing: 36 A, Cutoff: 0 A
Size: W16 x L30.5 x H20.5 mm
In addition to G6QE, G5NB and G5Q are also available.
For power switching applications in the case of
Supports three types of
inrush currents
- Supports lamp load
(TV8 certified) - Supports capacitor load
(IEC 60669-2-1 certified) - Supports E-ballast 3A
(single-stable type) and
E-ballast 5A (latching type)
Size: W10.3 x L20.3 x H15.8 mm
In addition to G5Q-HR, G5RL and G5PZ are also available.
*1. When selecting relays, please contact your OMRON representative with the actual usage conditions.
* Contents as of July 2024.
In the interest of product improvement, specifications are subject to change without notice
