Description
Overview
Trigger switch for the Bosch GSR120-LI 10.8V lithium drill driver, handling both speed control and forward and reverse selection. Rated DC 7.2V to 24V at 8A to 16A, supplied as a single switch.
Specifications
- Fits: Bosch GSR120-LI 10.8V lithium drill
- Voltage range: DC 7.2V to 24V
- Current range: 8A to 16A
- Functions: variable speed, positive and negative rotation
- Quantity: 1pcs
Purpose
The switch sits in the grip and takes the wear of every trigger pull, so a drill that runs only at full speed, refuses to reverse or dies mid-cut usually needs this part rather than a motor.
Applications
- GSR120-LI trigger replacement
- Restoring variable speed
- Fixing a dead reverse position
- Repairing a drill that cuts out under load
- Servicing a second drill on the same platform
How to Use
- Remove the battery and confirm the model is GSR120-LI.
- Trace where the switch leads run to the motor and battery contacts.
- Note the lead order; motor and pack polarity must go back the same way.
- Seat the replacement, solder it in, then test speed and reverse.
- Caution: stay within DC 7.2V to 24V and 8A to 16A. Reversed battery wiring will damage the switch or the pack.







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