Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee 120V Switch
Model Number: 23-66-0013
The Milwaukee 23-66-0013 120V Switch is a genuine OEM replacement part designed for the Milwaukee 5262-21 1 in. SDS D-Handle Corded Rotary Hammer (serial code G43B). The 23-66-0013 is the trigger switch that completes the 120V AC electrical circuit between the corded power supply and the rotary hammer's universal motor. As the operator depresses the trigger, the switch closes and energizes the motor, allowing the tool to drill and chip. As the trigger is released, the switch opens and de-energizes the motor, allowing it to coast to a stop. On a corded tool like the 5262-21 that pulls significant current under load during heavy concrete drilling and chipping work, the trigger switch is a high-stress wear component that handles the full motor current during every start, stop, and trigger feathering action across the tool's service life.
Common symptoms of switch failure include the tool failing to start when the trigger is pressed, intermittent operation where the tool starts and stops randomly under trigger pressure, the tool starting at full speed without trigger modulation, or the tool continuing to run after the trigger is released. Using a multimeter set to ohms, the switch can be tested by attaching each lead to a switch terminal: in the ON position the meter should read continuity (a low resistance reading), and in the OFF position the meter should read OL (open line, no continuity). When the switch fails any of these tests, replacement with this OEM service part restores correct on-off operation, full motor control, and safe tool operation. Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee 5262-21 service parts diagram before ordering, since Milwaukee occasionally implements running production changes that affect part compatibility within the same catalog number. Several other Milwaukee 120V switches share a similar appearance but use different terminal configurations and current ratings (including the 23-66-0059 used on the 5546-21 SDS Max Hammer), so confirming the exact part number called out for your tool's serial number is essential to avoid ordering the wrong switch. Verify by serial number using Milwaukee's online parts lookup before ordering to confirm correct fitment.
Features
- Genuine Milwaukee OEM replacement, direct factory part for the 23-66-0013 reference
- Designed for the Milwaukee 5262-21 (G43B) 1 in. SDS D-Handle Corded Rotary Hammer
- 120V AC trigger switch, completes the electrical circuit to the rotary hammer's universal motor
- Two-way switch operation, opens and closes with trigger movement
- Designed to handle the full motor current load of the 5262-21 platform
- Manufactured to Milwaukee factory tolerances and electrical specifications
- Direct-fit replacement, no modification required for installation
- Restores correct on-off operation and full motor control after switch failure
- Critical safety component, replacement is recommended any time the original switch shows signs of intermittent operation or fails continuity testing
- Ohm-meter testable: should read continuity in ON position, OL in OFF position
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 23-66-0013
- Official Description: 120V Switch
- Component Type: Corded Tool Trigger On-Off Switch
- Voltage Rating: 120V AC
- Switch Type: Two-Way On-Off
- Confirmed Compatible Model: 5262-21 (G43B) Milwaukee 1 in. SDS D-Handle Corded Rotary Hammer
- Quantity: Sold individually, 1 switch per order
- Part Type: OEM Service Replacement Part
Includes
- (1) Milwaukee 23-66-0013 120V Switch
- Note: Switch trigger, switch retainer, and mounting hardware are NOT included and sold separately. Refer to the 5262-21 service parts diagram for exact hardware requirements
- Note: Power cord, cord protector, brush assemblies, motor, gearcase, and other tool components are NOT included and sold separately
- Note: This switch is specific to the 5262-21 (G43B) platform. It is NOT interchangeable with other Milwaukee 120V switches such as the 23-66-0059 (used on the 5546-21 SDS Max Hammer) or other corded Milwaukee tool switches, even when the appearance is similar, as terminal configurations and current ratings vary
- Note: Verify your tool's catalog number (5262-21) and serial number against the official Milwaukee parts diagram before ordering
