Product Description
Heavy-Duty Toggle Switch – DPDT 3P, ON-OFF-(ON), 20A 125VAC / 15A 250VAC
The 66-1955 Heavy-Duty Toggle Switch is a rugged DPDT (Double Pole Double Throw) 3P panel-mount switch designed for reliable switching in electrical, automotive, marine, industrial, radio, and equipment-control applications. It features an ON-OFF-(ON) configuration, with one maintained ON position, a center OFF position, and a momentary (ON) position.
With a high-current rating of 20 Amps at 125VAC and 15 Amps at 250VAC, the 66-1955 is well suited for applications requiring a durable, high-capacity toggle switch. The chrome-plated lever, metal mounting hardware, threaded bushing, and quick-connect terminals provide a rugged design for panel installations.
Key Features
- Part Number: 66-1955
- Heavy-duty toggle switch
- DPDT 3P configuration
- ON-OFF-(ON) switching function
- (ON) = Momentary
- One maintained ON position
- One momentary ON position
- Center OFF position
- Chrome-plated metal toggle lever
- Durable metal mounting assembly
- Threaded M12 x 0.75 mounting bushing
- Quick-connect style terminals
- Designed for panel mounting
- High-current switching capability
- RoHS compliant
- TÜV and CE markings shown on specification sheet
Switch Function
ON-OFF-(ON)
The three switch positions are:
- ON – Maintained ON
- OFF – Center OFF
- (ON) – Momentary ON
The (ON) position is spring-loaded and returns to the center OFF position when the lever is released.
This configuration is particularly useful where a maintained ON function is needed in one direction and a momentary activation function is required in the opposite direction.
Electrical Ratings
- 20 Amps @ 125VAC
- 15 Amps @ 250VAC
Mechanical Specifications
All measurements are in millimeters (mm).
- Body Width: 33.0 mm
- Body Depth: 19.8 mm
- Body Height: 19.0 mm
- Terminal Length: 13.0 mm
- Terminal Height: 10.3 mm
- Terminal Dimension: 6.4 mm
- Toggle Diameter: 6.0 mm
- Toggle Head Diameter: 12.2 mm
- Toggle Height: 18.1 mm
- Toggle Travel: 30°
- Mounting Thread: M12 x 0.75
- Additional Toggle Dimension: 6.9 mm
- Additional Dimension: 1.9 mm
Construction
The 66-1955 features a heavy-duty black housing with a polished chrome toggle lever and metal mounting components. The threaded M12 x 0.75 bushing allows the switch to be securely mounted through a control panel, while the accessible terminals simplify electrical connections.
Common Applications
The 66-1955 is suitable for:
- Two-way radio equipment
- Amateur radio equipment
- Automotive electrical controls
- Marine electronics
- Industrial machinery
- Control panels
- Electrical equipment
- Power equipment
- Communications equipment
- Custom electrical and electronic projects
Specifications
| Specification | Details |
|---|---|
| Part Number | 66-1955 |
| Switch Type | Heavy-Duty Toggle |
| Circuit | DPDT 3P |
| Function | ON-OFF-(ON) |
| ON Position 1 | Maintained |
| OFF Position | Center OFF |
| ON Position 2 | Momentary |
| Rating A | 20A / 125VAC |
| Rating B | 15A / 250VAC |
| Mounting Thread | M12 x 0.75 |
| Toggle Diameter | 6.0 mm |
| Toggle Head Diameter | 12.2 mm |
| Toggle Travel | 30° |
| Body Width | 33.0 mm |
| Body Depth | 19.8 mm |
| Body Height | 19.0 mm |
| Compliance | RoHS / TÜV / CE |
66-1955 Heavy-Duty Toggle Switch
The 66-1955 provides a versatile ON-OFF-(ON) DPDT configuration with high-current switching capability and a rugged panel-mount design. It is an excellent choice for applications requiring a maintained ON / OFF / momentary ON toggle switch rated at 20A 125VAC or 15A 250VAC.
