Description
Sierra 3-Position Polyester Ignition Switch with Rubber Cap – MP39200
A non-conductive three-position conventional ignition switch designed for marine panels where corrosion resistance and a protective rubber cap are desirable.
- Off-Run-Start conventional switch action
- Marine-grade glass-filled polyester housing
- Knurled black face nut with rubber cap
- Three screw-tab terminals
- Inner seal and non-conductive housing reduce corrosion and short-circuit risk
Specifications
- Part number: MP39200
- Type: 3-position conventional ignition switch
- Function: Off – Run – Start
- Hole size: 7/8 in.
- Maximum panel thickness: 1-1/8 in.
- Terminals: 3 screw tabs
- Ignition rating: 15A @ 12V DC
- Solenoid rating: 30A @ 12V DC
Interchange / Replaces
- Cole Hersee: M850BP
- Sea-Dog: 420365-1
Application / Fitment Notes
For conventional ignition circuits using separate ignition and starter/solenoid functions. Compare terminal design and panel dimensions before replacement.

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