Blue Sea Systems 4151 WeatherDeck Toggle Switch, SPST OFF-(ON) Momentary, for Horn or Windshield Wipers

The Blue Sea Systems 4151 is a WeatherDeck panel-mount toggle switch built for marine electrical circuits that need momentary control, such as a horn or windshield wipers. It is an SPST OFF-(ON) switch, meaning the toggle rests in the OFF position and only closes the circuit while held in the ON direction, releasing back to OFF automatically. The switch is constructed of nickel-plated brass and phenolic for corrosion resistance in saltwater and outdoor marine environments, and it carries an IP67 waterproof rating so it can withstand temporary immersion without damage.

Designed to integrate with Blue Sea Systems WeatherDeck panels, the 4151 uses quick-connect terminals for fast, secure wiring during installation or replacement. It is rated for 15 amps at 12 volts DC or 125 volts AC, covering the electrical demands of common 12-volt boat accessories. The silver-toned toggle and Carling-manufactured switch body are sized for standard WeatherDeck cutouts, making it a straightforward swap for other WeatherDeck-compatible momentary switches.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 4151
• Switch Type: Toggle Switch
• Circuit Type: SPST, OFF-(ON) Momentary
• Recommended Use: Horn or Windshield Wipers
• Mounting Type: Panel Mount (WeatherDeck)
• Material: Nickel-Plated Brass and Phenolic
• Terminal Type: Quick Connect
• Number of Positions: 2
• Current Rating: 15 Amps at 12 Volts DC / 125 Volts AC
• Waterproof Rating: IP67
• Color: Silver
• Weight: 0.1 pounds

Fitment

Fits Blue Sea Systems WeatherDeck panel cutouts; universal for 12-volt marine circuits requiring a momentary SPST OFF-(ON) switch.

Replaces (OEM)

No OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What does OFF-(ON) mean on the Blue Sea Systems 4151 switch? OFF-(ON) means the toggle rests in the OFF position and only closes the circuit momentarily while you hold it in the ON direction; releasing the toggle returns it to OFF automatically, which is why the 4151 is well suited to horn or windshield wiper circuits.

Is the 4151 waterproof? Yes, the Blue Sea Systems 4151 carries an IP67 waterproof rating, allowing it to withstand temporary immersion without damage to the switch.

What is the current rating of this switch? The 4151 is rated for 15 amps at 12 volts DC or 125 volts AC, which covers typical 12-volt marine accessory loads such as horns and wiper motors.

What is the 4151 switch made of? It is constructed of nickel-plated brass and phenolic, materials chosen for their corrosion resistance in saltwater and outdoor marine environments.

Does the 4151 fit standard Blue Sea WeatherDeck panels? Yes, the 4151 is designed for Blue Sea Systems WeatherDeck panels and is Carling-manufactured to fit standard WeatherDeck cutouts.

How does the 4151 connect to wiring? The 4151 uses quick-connect terminals, allowing for fast and secure wiring during installation or replacement without soldering.

What circuit configuration is this switch? The 4151 is an SPST (single pole, single throw) switch, providing simple on/off control for a single circuit in its momentary ON configuration.

What applications is the 4151 typically used for? This switch is intended for circuits that need momentary control, such as a horn or windshield wipers.

How much does the Blue Sea Systems 4151 weigh? The 4151 weighs 0.1 pounds.

What color is the toggle on the 4151? The toggle on the Blue Sea Systems 4151 is silver.

How many positions does the 4151 switch have? The 4151 has 2 positions: OFF and the momentary ON position.