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Mazzer M28237

Mazzer M28237 Wired Cup Activation Switch + plate, Major V

Regular price $103.53

This part ships directly from Mazzer and stock is not guaranteed. Lead time averaging 7 to 9 business days for ground shipments, 1 to 2 business days for Overnight.

If unavailable, the item will be backordered. If you have any questions check parts sheets below description. Please email or chat to confirm availability prior to ordering.

Description Details

Restore the automatic dosing reliability of your Mazzer Major V grinder with the genuine Mazzer Wired Cup Activation Switch + plate (Part \# M28237). This crucial OEM replacement ensures accurate, hands-free dosing by instantly detecting the portafilter or dose cup to initiate the grinding cycle. If you are struggling with a Mazzer Major V that is **not grinding automatically when portafilter inserted** or if your dosing switch is inconsistent, this factory-specified assembly is the definitive solution to **fix intermittent grinder activation**. Key features include the pre-wired microswitch for simple electronic connection and a durable mounting plate for perfect alignment and reliable function throughout thousands of duty cycles.

Engineered to Mazzer's exacting commercial standards, the M28237 switch assembly guarantees the precision required in high-volume settings. The immediate benefit is restored workflow efficiency, eliminating manual errors and ensuring consistent coffee dose quantity, which is vital for espresso quality. Usage is straightforward: replacing a failed or sticky switch with this part directly impacts your speed and consistency. Stop asking yourself **why is my Mazzer Major V grinder cup switch broken?**—replace it with this durable, official component and maintain peak operational performance.

This genuine Mazzer part (M28237) is specifically compatible with the Major V grinder models. It operates as the primary sensor for automatic dosing. Specifications include the complete wired switch assembly and metal mounting plate. By investing in this OEM replacement, you guarantee compatibility and protect your grinder’s sensitive electronics, preventing expensive downtime and ensuring that your Mazzer Major V operates exactly as designed.

Descriptions are for reference only. We do our best to fill in the blanks when manufacturers don’t provide descriptions, but details can vary. We strongly recommend checking with the manufacturer for the exact part number you need. Ordering based on the part number—rather than the description—is the best way to ensure compatibility.

Frequently Asked Questions

This Part #M28237 fits Mazzer machines, including the Major E, Major V, Major VP series. Compatibility may be specific to the machine's production year and model. Please consult the technical PDFs and compatibility data on this page to confirm a match for your specific unit before finalizing your purchase.

Our current database shows fitment for the Major E, Major V, Major VP series. However, many Mazzer components are interchangeable across different platforms. If you have successfully installed Part #M28237 on a model we haven't listed, please let us know so we can update our records for the community.

If you are unsure of the fit, do not guess. To prevent downtime, please view our Compatible Parts Diagrams to check the exploded view PDF for your specific unit, or message our parts team for assistance.

Parts from Mazzer including this wired cup activation switch + plate, major v ship directly from their warehouse. Please email or chat to confirm availability prior to ordering.
Yes. Part #M28237 is a 100% genuine OEM component sourced directly from the Mazzer factory. Using original parts ensures your equipment maintains its factory-spec pressure ratings and safety certifications.
Lead times for Mazzer parts typically range from 7 to 9 business days depending on availability. Next Day Air parts usually ship within 1 to 2 business days.
All Mazzer parts come with a 365-day manufacturer's warranty. Contact us for specific warranty details.
All Mazzer parts come with a All sales final return policy. Please see our refund policy or chat for more details.
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