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Small rectangular trigger switch with plastic housing and metal terminals

Superior Electric

Superior Electric L50 Aftermarket Trigger Switch 24/12A-125/250V

SKU CH-3RJ3-C9X5F

Aftermarket trigger switch rated 24/12A at 125/250V replaces Makita 651172-0 for circular saws and grinders

  • Direct replacement for Makita 651172-0 switch
  • Handles on/off and variable speed control
  • Manages electric braking by reversing polarity
  • Rated 24/12A at 125/250V for compatibility
  • Mechanical internals resist wear over time

What it replaces

The Superior Electric L50 trigger switch is a direct aftermarket replacement for the Makita 651172-0 switch found in many Makita circular saws and grinders. It restores on/off control, variable-speed operation and the electric-braking function that momentarily reverses polarity. Switches degrade mechanically with use, so this part returns the tool to reliable operation.

When the jump is worth it

Replace the original switch when the trigger feels loose, the tool fails to start consistently or variable speed and braking no longer work. The L50 is rated 24/12A at 125/250V, matching the electrical demands of the saws and grinders that use the 651172-0. It is not for tools that require a different amperage rating, a different voltage range or a different mounting pattern.

Install and common issues

Installation involves opening the tool housing, disconnecting the old switch leads and fitting the new switch in the same location; basic hand tools are usually sufficient. Common problems include misrouting the wires so the trigger binds, forgetting to re-engage the brake spring or using a switch with the wrong terminal layout. Double-check polarity and mechanical alignment before reassembling the tool.

Highlights

  • Direct replacement for Makita 651172-0 switch
  • Handles on/off and variable speed control
  • Manages electric braking by reversing polarity
  • Rated 24/12A at 125/250V for compatibility
  • Mechanical internals resist wear over time

Specifications

BrandSUPERIOR ELECTRIC

Questions about this item

What power rating does the L50 trigger switch need to match the original tool?

The switch is rated 24 A at 125 V and 12 A at 250 V, matching the Makita 651172-0 specification.

Which step is often missed when fitting this switch into a Makita circular saw or grinder?

Reconnecting the electric-brake wires so the tool can momentarily reverse polarity for braking.

When will this replacement switch typically need changing again?

Mechanical contacts wear with use; expect to replace it once on/off or variable-speed action becomes unreliable.

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