Contura DPDT On-Off-On Switch

A DPDT switch stands for Double Pole Double Throw. This means it can control two separate electrical circuits simultaneously or reverse the polarity of a single circuit.

The On-Off-On designation means the switch has three stable positions: a first 'On' position, a central 'Off' position, and a second 'On' position. Each position remains engaged until the switch is manually moved.

This switch is suitable for marine applications requiring bidirectional control or selection between two functions with a central off position. Examples include:

Windlass control: for 'Up', 'Off' and 'Down' functions.Flap control: for 'Up', 'Off' and 'Down' functions.Bilge pump selection: for 'Manual', 'Off' and 'Automatic' modes.Polarity reversal: for motors requiring direction change.

The BLUE SEA Systems Contura series is known for its robustness, reliability, and modularity. The switches in this series are designed to withstand demanding marine environments and integrate easily into control panels. They offer high flexibility thanks to compatibility with a wide range of interchangeable actuators (rocker switches) and mounting frames.

Yes, the BLUE SEA 8220-BSS switch, like all products in BLUE SEA Systems' Contura series, is specifically designed to withstand harsh marine environment conditions. It is made from materials resistant to moisture, spray, UV, and vibration.

The BLUE SEA 8220-BSS switch is a momentary-position switch. This means each position (On, Off, On) is stable, and the switch remains in the selected position until manually moved to another position. It does not automatically return to the center position.

No, the BLUE SEA 8220-BSS switch is typically sold as a switch body only. The actuator (the visible and operable rocker) is a separate component from the Contura series. This allows users to select the actuator that best suits their needs in terms of color, symbols, or backlighting function.

Yes, it is entirely possible to add a lighting function to this switch. To do so, you will need to use a Contura series actuator (rocker) compatible with lighting. These actuators include LEDs and are designed to fit perfectly with the 8220-BSS switch body, providing improved visibility in the dark.

The main benefits of a DPDT switch include:

Versatility: It can control two independent circuits with a single switch.Polarity reversal: It allows easy reversal of current direction in a circuit, which is critical for motors.Simplicity: It simplifies wiring and integration into control panels by potentially replacing two SPDT switches.

Yes, one of the main functions of a DPDT On-Off-On switch is its ability to reverse the polarity of a motor. This feature is essential for controlling the rotation direction of equipment such as windlasses, trim tab motors, or other linear actuators.

The 8220-BSS switch is designed for snap-in mounting on a panel. After cutting an appropriately sized hole, the switch is simply pushed into place and integrated clips hold it firmly without requiring additional tools or fasteners.

A DPDT (Double Pole Double Throw) switch typically has 6 connection terminals. These terminals are arranged to manage the two independent poles and their respective two switching positions, plus the common inputs.

For BLUE SEA Systems Contura series switches, the standard panel cutout is approximately 21.08 mm x 36.83 mm (0.830" x 1.450"). Always verify the exact specifications provided with the product or in Blue Sea Systems' technical documentation to ensure a perfect fit.

Wiring a DPDT On-Off-On switch must be done by following an appropriate electrical diagram for the intended application. It is critical to ensure the power supply is cut off before any work and to strictly respect the polarities and current ratings of the circuits. If in doubt, it is strongly recommended to consult a qualified marine electrician.

Contura switches are designed to provide good water resistance once correctly installed in the panel. For maximum protection, especially in environments highly exposed to spray or splashes, the use of additional sealing gaskets or protective caps for the actuators may be considered to improve sealing.

Yes, the BLUE SEA 8220-BSS switch can be mounted in any orientation (vertical or horizontal) on your panel. Mounting flexibility will primarily depend on the layout of your dashboard and the readability of the symbols or text on the actuator (toggle) you choose.

Yes, the 8220-BSS switch is fully compatible with the entire range of actuators (toggle switches) and mounting frames in BLUE SEA Systems’ Contura series. This compatibility ensures easy integration and both aesthetic and functional customization of your control panel.

Yes, Blue Sea Systems Contura series switches are generally designed to operate reliably in standard 12V and 24V DC marine electrical systems. However, it is important to ensure that the current in the application does not exceed the switch’s maximum rating to guarantee safe and durable operation. This information is not provided in the product description here.

Yes, this switch can be used effectively to control larger relays or contactors. In this setup, the 8220-BSS switch acts as a control switch to turn the relay on or off, which then handles the high current of the main equipment. This is a common practice to protect the switch and undersized wiring.

BLUE SEA Systems products are generally covered by a manufacturer's limited warranty, protecting against defects in materials and workmanship. For specific warranty details, including duration and applicable conditions, consult BLUE SEA Systems' official documentation or contact the dealer's customer service.