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3G Electric
OMRON A-20GQ21-B Plunger Snap-Action Switch, 20 A @ 480 V AC, Screw Connection - Plunger Snap-Action Switches
OMRONPlunger Snap-Action Switches

OMRON A-20GQ21-B Plunger Snap-Action Switch, 20 A @ 480 V AC, Screw Connection

The OMRON Snap Action Switch is a plunger-actuated switch from the A Series, featuring a 1NO/1NC contact configuration with a screw electrical connection. It is rated for 20 A at 480 V AC (MPN A-20GQ21-B). This…

SKU 3G-OTH-40325

Also listed as: A20GQ21B · A 20GQ21 B

Brand
OMRON
Item
A-20GQ21-B Plunger Snap-Action Switch, 20 A @ 480 V AC, Screw Connection
Part Number
A-20GQ21-B
Category
Plunger Snap-Action Switches
Available to Order
Also known as:A-20GQ21-BOMRON
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

OMRON
Manufacturer Part Number
A-20GQ21-B
Series
A
AC Contact Rating
20 A @ 480 V
Electrical Connection
Screw

Technical Documents

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OMRON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OMRON Snap Action Switch is a plunger-actuated switch from the A Series, featuring a 1NO/1NC contact configuration with a screw electrical connection. It is rated for 20 A at 480 V AC (MPN A-20GQ21-B). This industrial switch is designed for reliable snap-action operation in control and automation applications.

Frequently Asked Questions

What is the OMRON Snap Action Switch A-20GQ21-B used for?

The OMRON Snap Action Switch A-20GQ21-B is a plunger-actuated switch used in industrial control and automation for reliable snap-action switching. It is commonly applied in limit sensing, safety interlocks, and position detection across machining, material handling, and packaging systems.

What are the specifications of the OMRON A-20GQ21-B snap action switch?

The OMRON A-20GQ21-B is a plunger snap-action switch from the A Series with a 1NO/1NC contact configuration. It has an AC contact rating of 20 A at 480 V and uses a screw electrical connection. The manufacturer part number is A-20GQ21-B.

Where to buy the OMRON A-20GQ21-B snap action switch worldwide?

3G Electric supplies the OMRON A-20GQ21-B snap action switch worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this switch to your facility. Contact us for availability and lead time.

How to install the OMRON A-20GQ21-B snap action switch?

Mount the OMRON A-20GQ21-B securely using the screw terminals for electrical connection. Ensure the plunger actuator aligns with the target mechanism for proper snap-action operation. Follow standard industrial wiring practices and verify the 20 A at 480 V rating matches your circuit.

Used in

Common applications for OMRON
Industrial control panels — Omron G7L series power relays for switching high-current loads up to 30 A
HVAC equipment — Omron MJN series relays with 240 V AC coils for compressor and fan control
Process automation — Omron G3NA solid-state relays for silent, high-cycle switching of heaters
Material handling — Omron photoelectric and proximity sensors for position detection and counting
Machine safety — Omron safety relays and interlock switches for guard door monitoring
Power distribution — Omron surface-mounted relays with finger-safe terminals for branch circuit control
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OMRON Products

3G Electric supplies OMRON plunger snap-action switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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