Sierra RK40150 Non-Illuminated Marine Rocker Switch Off-MOM On SPST

The Sierra RK40150 is a standard non-illuminated marine rocker switch designed for reliable performance in the demanding marine environment. Built with non-corrosive plastic construction, this switch resists the moisture and salt exposure common aboard boats, making it a dependable choice for switch panel installations.

This switch features an Off – Momentary On (SPST) configuration, meaning it remains in the Off position by default and only activates a circuit while the actuator is held in the On position — ideal for applications such as horn, trim, or starter circuits that require momentary engagement. The black actuator and black face plate provide a clean, uniform look on any marine switch panel.

Key Features:

• Non-corrosive plastic construction for marine-grade durability
• Switch function: Off – Momentary On (SPST)
• Non-illuminated design with black actuator and black face plate
• Silver contacts for reliable electrical conductivity
• Brass blade terminals for secure wiring connections
• Rated: 20 Amps at 12V DC
• Parenthetical (On) in switch labeling denotes a momentary position

Sierra International is one of the most trusted names in the marine industry, engineering products that meet or exceed original equipment standards while withstanding the harsh marine environment. The RK40150 is sold individually and is a straightforward drop-in replacement for worn or failed rocker switches on standard marine switch panels.