WeatherDeck SPST On-Off-On lever switch

Although the product name mentions "SPST On-Off-On", the supplier reference 4152-BSS (or 4152B-BSS) actually corresponds to a SPDT (Single Pole, Double Throw) On-Off-On switch. This means it has a single pole (one input) and two different outputs (double throw).

Its On-Off-On configuration allows it to control a single circuit in three distinct states:

Position "On" (first): Connects the input to the first output. Position "Off" (center): Disconnects the input from all outputs. Position "On" (second): Connects the input to the second output. This feature is ideal for applications requiring switching between two distinct functions or two power sources for the same equipment, with an intermediate off position.

Blue Sea Systems' WeatherDeck range is specifically designed for demanding marine environments. Products in this series, including this switch, are characterized by:

Robust and durable construction.Resistance to splashes and corrosion for outdoor use.UV-stabilized materials to prevent degradation from sun exposure.Increased reliability for electrical applications aboard vessels.

The 4152-BSS lever switch is made with materials resistant to the marine environment. It typically includes:

A phenolic base for good electrical insulation and heat resistance. Nickel-plated brass terminals for excellent conductivity and corrosion resistance. A UV-stabilized plastic lever and body for durability and weather resistance.

Yes, this switch is part of Blue Sea Systems’ WeatherDeck series, meaning it is designed to withstand marine environments. It provides good protection against splashes, moisture, and corrosion, making it suitable for use on weather-exposed dashboards or control panels.

Designed for marine environments, this switch is made from materials resistant to corrosion and UV. Its lifespan is optimized for thousands of activation cycles under normal onboard conditions, ensuring long-term reliability.

No, the Blue Sea 4152-BSS lever switch is a basic switch without integrated lighting or an indicator light. It has no LED or lamp to signal its state (On/Off).

With its On-Off-On configuration (SPDT), this switch is ideal for controlling circuits requiring two distinct active states with an off position. It is commonly used for:

Navigation lights (e.g., anchor light / off / running lights). Bilge pumps (e.g., manual / off / automatic, if paired with a float switch). Horns, wipers, or other accessories requiring simple and reliable control.

The switch is usually supplied with a hex nut and a washer for panel mounting. Other accessories such as watertight lever caps or identification plates are often sold separately by Blue Sea Systems.

Yes, this switch is fully compatible with low-power devices such as LED lighting. Its robust design and reliable contacts ensure proper operation even with low loads, while being capable of handling higher loads up to its rated amperage.

Yes, this switch is commonly used to control bilge pumps and navigation lights. Its On-Off-On configuration is particularly suited for functions such as switching between different light sources (for example, anchor light and running lights) or manual control of a bilge pump.

For installation of the 4152-BSS switch, a standard mounting hole of 1/2 inch (approximately 12.7 mm) in diameter is required on the panel.

No, there is no specific electrical orientation requirement for mounting the switch itself. However, for ergonomic and usability clarity, it is recommended to install it so that the "On" positions correspond to the desired action (e.g., push up for "On" and down for the other "On", with "Off" in the center).