10A Rotary Key Switch 2/3 Position NO NC Knob Selector 22mm

10A Rotary Key Switch – 2 & 3 Position Knob Selector with Keys

Take control of your electrical circuits with this versatile 22mm Rotary Key Switch. Rated at 10A and compatible with 12V to 220V systems, this selector switch is ideal for hobbyists, makers, engineers, and DIY electronics projects. Available in 8 color options, it blends function with flexibility.

Key Features

• Flexible Position Configurations: Available in 2-position and 3-position variants — choose from 1NO, 2NO, 1NC, or 2NC contact arrangements to suit your circuit design.
• 3-Position Logic: In 3-position mode, the switch operates on a left-and-right selection pattern: ON → OFF ← ON for intuitive directional control.
• Key-Lock Security: When the circuit is active, the key cannot be removed — providing a built-in safety lockout to prevent accidental switching.
• Wide Voltage Compatibility: Supports 12V DC up to 220V AC systems, making it suitable for a broad range of applications.
• Durable Plastic Construction: Lightweight yet robust housing designed for long-lasting performance in both hobby and light industrial settings.
• Standard 22mm Panel Mount: Fits standard 22mm panel cutouts for easy installation in control boxes, equipment panels, and enclosures.
• 8 Color Choices: Select the color that matches your panel or project aesthetic.

Specifications

• Rated Current: 10A
• Voltage Range: 12V – 220V
• Positions: 2-Position or 3-Position
• Contact Types: 1NO, 2NO, 1NC, 2NC (model dependent)
• Panel Cutout: 22mm
• Body Material: Plastic
• Series: LA36M
• Key Removable: Only when circuit is OFF

Ideal For

• DIY electronics and home automation projects
• Industrial control panels and enclosures
• Machinery start/stop selector circuits
• Automotive and 12V accessory switching
• Maker spaces, prototyping, and craft electronics builds

For guidance on electrical safety when working with switches and control panels, visit the OSHA Electrical Safety resource.

Frequently Asked Questions

Q: What does a 2-position vs. 3-position rotary key switch mean?

A: A 2-position rotary key switch toggles between two states (e.g., ON and OFF), while a 3-position switch has three selectable states arranged as ON → OFF ← ON, allowing left and right directional selection. The 3-position configuration is useful when you need to control two separate circuit paths from a single switch.

Q: What do NO and NC mean on this rotary switch?

A: NO (Normally Open) means the circuit is open (disconnected) in the default position and closes when the switch is activated. NC (Normally Closed) means the circuit is closed (connected) by default and opens when switched. This rotary key switch is available in 1NO, 2NO, 1NC, and 2NC configurations to match different wiring needs.

Q: Can the key be removed while the switch is on?

A: No — this is a built-in safety feature. The key can only be inserted or removed when the switch is in the OFF position. This prevents unauthorized or accidental operation of the circuit while it is active.

Q: What panel cutout size is required for this rotary key switch?

A: This switch is designed for a standard 22mm panel cutout, making it compatible with most industrial and hobbyist control enclosures and panels. Installation is straightforward with included mounting hardware.

Q: Is this switch suitable for both AC and DC applications?

A: Yes. This rotary key switch supports a wide voltage range from 12V DC up to 220V AC, making it versatile for automotive, low-voltage DC, and standard mains AC circuit applications.