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OMRON Snap Action Switch: Plunger Actuator, 1NO/1NC - Plunger Snap-Action Switches
OMRONPlunger Snap-Action Switches

OMRON Snap Action Switch: Plunger Actuator, 1NO/1NC

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

Brand
OMRON
Item
Snap Action Switch: Plunger Actuator, 1NO/1NC
Category
Plunger Snap-Action Switches
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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
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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
Automotive assembly lines — OMRON G2RV-ST500 AC/DC24 slim relays for compact control panel switching
Packaging machinery — OMRON E2E-X5Y1-M1 inductive proximity sensors for position detection of metal parts
HVAC systems — OMRON LY4-DC12 general-purpose relays for fan and compressor control
High-temperature ovens — OMRON E32-D51 fiber-optic cables for non-contact temperature sensing
Material handling — OMRON D4CC3002 limit switches for conveyor belt end-of-travel detection
Machine tool safety — OMRON TZ-1GV22 snap-action switches for interlock and guard monitoring

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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