Description
Overview:
This genuine Makita Switch Block restores reliable on/off control in selected Makita angle grinders. Built with a robust moulded thermoplastic housing and metal contacts, it is engineered for consistent switching performance under workshop and site conditions. Designed as a direct-fit electrical control module for the handle assembly, it helps return your grinder to safe, predictable operation after faults such as intermittent power or failure to start. Identified by OEM No. 638949-0 and MPN 632L23-8, it suits popular models including GA4540 and GA5040. A practical choice for tradespeople, maintenance teams, and DIY users, it fits like the original part and supports routine repairs without modifying the tool body or wiring layout when installed as per Makita service guidance.
Key Features:
- Genuine Makita replacement part for assured fit and function
- OEM cross-reference: 638949-0; Manufacturer Part Number: 632L23-8
- Direct-fit switch block for selected GA-series angle grinders
- Durable housing and metal contacts for long service life
- Restores dependable on/off control and tool responsiveness
- Helps resolve non-start, intermittent cut-out, or sticking-switch issues
- Straightforward to install using basic hand tools
- Designed to integrate with the existing handle assembly and wiring
- Suitable for professional and domestic repair and maintenance
Typical Applications:
Used to replace a failed or worn switch block during servicing of Makita angle grinders. Ideal when a grinder will not start, only runs intermittently, or the trigger action feels inconsistent. Suitable for preventative maintenance and restoring safe, repeatable switching on site, in workshops, and for general tool upkeep.
Also known as:
On/off switch module, trigger switch block, control switch assembly, grinder trigger unit, electrical switch pack, power control module, handle switch unit.
Fits Models:
GA4540
GA4540C
GA4541
GA5040
GA5040C
GA5041
Alternate Part Numbers:
6389490
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