Staff Answer
May 19, 2026 - 10:24 AM
PKYS offers several common single-pole toggle switch configurations depending on your electrical switching needs. Note that parentheses ( ) indicate a momentary position that springs back automatically when released. SP means single pole, ST means single thrown (on or off only), DT means double throw (where there are two on positions)
- Blue Sea 4150 (SPST ON-OFF): Standard Single-Pole Single-Throw on-off toggle switch.
- Blue Sea 4151 (SPST (ON)-OFF): Momentary ON, standard OFF toggle switch.
- Blue Sea 4152 (SPDT ON-OFF-ON): Single-Pole Double-Throw toggle switch with two locked ON positions and a center OFF.
- Blue Sea 4153 (SPDT (ON)-OFF-ON): One momentary ON position, a center OFF, and one locked ON position.
- Blue Sea 4154 (SPDT (ON)-OFF-(ON)): Two momentary ON positions and a center OFF.
