Description
Blue Sea 7938 DPDT Contura Switch (ON)-OFF-(ON) | Boat Supply Store
Engineered for rigorous marine environments, this DPDT switch provides independent control over two distinct circuits with its (ON)-OFF-(ON) momentary action. Its robust construction is rated for 20A at 12V and 15A at 24V, featuring internal and external gasket panel seals to resist vibration, shock, moisture, and salt spray, ensuring reliable operation on offshore fishing vessels or coastal cruisers. This switch is ideal for managing dual-function equipment like powered hatches or anchor windlass systems where precise, momentary control is required.
Key Features
- DPDT Configuration: Manages two independent circuits.
- Momentary Action: (ON)-OFF-(ON) provides precise temporary control.
- Marine-Grade Durability: Resistant to vibration, shock, and thermoshock.
- Environmental Sealing: Internal and external gasket panel seal protects against moisture and salt spray.
- High Amperage Rating: Capable of 20A @ 12V and 15A @ 24V.
- Extended LED Life: LED illumination rated for 100,000 hours.
- Wide Operating Range: Functional from -40°C to 85°C.
- Contura II Design: Ergonomic paddle actuator for positive engagement.
Specifications
| Product Specifications | |
|---|---|
| Blue Sea Systems Contura II Switch | DPDT (Double Pole/Double Throw), Black actuator, (ON)-OFF-(ON) action. |
| Amperage Rating | 20A @ 12V / 15A @ 24V |
| Panel Seal | Internal and external gasket |
| Resistance | Vibration/shock/thermoshock/moisture/salt spray |
| LED Rating | 100,000 hours |
| Operating Temperature | -40°C to 85°C |
Who This Is For
Marine enthusiasts, boat builders, and DIYers requiring a durable, weather-resistant electrical switch for controlling dual circuits on vessels. Ideal for managing dual-function equipment such as powered hatches or other specialized marine applications.
How It Compares
| Feature | Blue Sea 7938 DPDT Contura Switch (ON)-OFF-(ON) | Competitor |
|---|---|---|
| Actuator Style | Contura II Paddle | Rocker, Toggle |
| Pole/Throw | DPDT | DPDT, DPDT |
| Action | (ON)-OFF-(ON) | Momentary ON-OFF-Momentary ON, (ON)-OFF- |
| Amperage Rating (12V) | 20A | 20A, 15A |
| Sealing | Internal and external gasket panel seal | IP67 rated, Weatherproof |
Common Concerns Answered
Is the LED illumination too bright for night operations?
While generally well-received, some users have noted the LED can be bright in extremely dark conditions. For applications sensitive to light pollution, consider alternative switches without illumination or integrate with a dimmer if feasible.
Will the momentary (ON)-OFF-(ON) action be difficult to adapt to?
This switch provides momentary activation for both ON positions, returning to OFF when released. If a purely latching (stay-on) function is required, this specific model may not be suitable; consult product documentation for alternative latching configurations.
Is this switch suitable for demanding offshore use?
Absolutely. Its marine-grade construction, resistance to vibration, shock, moisture, and salt spray, combined with robust electrical ratings, makes it exceptionally well-suited for harsh offshore environments.
Frequently Asked Questions
What is the amperage rating for the Blue Sea 7938 Contura II Switch?
The switch is rated for 20A at 12V DC and 15A at 24V DC.
What type of switch action does the Blue Sea 7938 Contura II Switch have?
It features a DPDT (Double Pole/Double Throw) configuration with an (ON)-OFF-(ON) action, meaning it is momentary in both ON positions.
Is the Blue Sea 7938 Contura II Switch waterproof?
The switch offers significant protection against the elements with an internal and external gasket panel seal, providing resistance to moisture and salt spray. It is designed for marine environments but specific submersion ratings should be confirmed if required.
What are common applications for the Blue Sea 7938 Contura II Switch?
Common applications include controlling dual-function equipment such as powered hatches, anchor windlass systems, trim tabs, or any setup requiring independent control of two separate circuits where momentary engagement is desired.
What is the operating temperature range for this switch?
The Blue Sea 7938 Contura II Switch is designed to operate within a temperature range of -40°C to 85°C (-40°F to 185°F).
