Description
Overview
The Sierra Marine Ignition Switch Short Shaft is a key-operated switch for 12V conventional off-run-start systems, designed for marine environments with corrosion resistance and sealed design. This listing aligns with Argomarine Part Number SMP41030 (also referenced as MP41030).
Features
- 3-position key control: Off → Run → Start
- Glass-filled polyester housing for durability in saltwater conditions
- Inner seal between cylinder and contact plate to reduce moisture ingress
- Non-conductive housing to help isolate against accidental shorting
Specifications and Materials
| Parameter | Value |
|---|---|
| Voltage | 12 V DC |
| Ignition current rating | 15 A |
| Solenoid rating | 30 A |
| Mounting hole | 7⁄8 in (≈ 23 mm) |
| Max panel thickness | 5⁄8 in (≈ 16 mm) |
| Terminal type | 3 screw-tab |
The corrosion-resistant materials and sealed design allow this switch to withstand moisture and salt exposure in marine settings.
Compatibility and Fitment
This switch is suitable for conventional (non-magneto) ignition circuits. Ensure the dash accommodates a 23 mm cutout and panel thickness does not exceed 16 mm. The screw-tab terminals support wiring for ignition, battery, and starter solenoid circuits.
Compliance and Safety
Always disconnect battery before installation. Use properly insulated crimp terminals, secure wiring, and test that Off kills ignition, Run powers engine circuits, and Start engages the starter only while the key is turned to Start.
Marine Applications
Ideal for engine control panels, custom dashboards, retrofit installations, and environments exposed to salt spray or high humidity. The design helps maintain reliable starting operation in harsh marine conditions.
Why Choose Argomarine
Argomarine lists verified parts and provides clarity on fitment and application. This Sierra Marine Ignition Switch offering is tailored for engine and service parts, ensuring reliability and support for your marine electrical projects.
Visit our Engine and Service Parts category for more electrical supplies.
