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Home /Compactor Parts /Electrical Parts /Buttons/Switches/Keys/Legends /22.5 MM

22.5 MM Key Switch

22.5 MM Selector Switch

22.5 MM Push Only Switch

22.5 MM Legends

22.5 MM Contacts And Replacement Keys

22.5mm Push Buttons, Key Switches & Pilot Lights

22.5mm push buttons, key switches, selector switches, emergency stops, pilot lights, and legends for industrial trash compactor control panels. The compact modern standard — used on most post-2015 commercial and industrial compactors. OEM-compatible with Marathon, PTR, Wastequip, Harmony, and SP Industries.

What this page covers

22.5mm is the modern industrial push-button standard — smaller panel footprint than 30mm, same functional capability, and the standard on most newer industrial equipment. Major brands (Schneider Electric, Siemens, Eaton, Allen Bradley) all use 22.5mm as their default modern panel hardware.

PRT stocks the complete 22.5mm range: push buttons (flush, extended, mushroom), key switches, selector switches, emergency stops, pilot lights, contact blocks, and legends. All use snap-in contact blocks for tool-free panel rebuild.

How to choose

Order by function (push button, key, selector, e-stop, pilot light), color, and voltage (for illuminated buttons and pilot lights). 22.5mm is panel-hole-compatible with 22mm (the same products are sometimes labeled 22mm or 22.5mm interchangeably).

If you're rebuilding a 22.5mm panel and need help spec'ing the contact block configurations or pilot-light voltages, send PRT the panel wiring schematic and we'll recommend the right kit.

22.5mm products in stock

  • 22.5mm Key SwitchCompact operator authorization switches.
  • 22.5mm Selector Switch2-position and 3-position function selectors.
  • 22.5mm Push Only SwitchMomentary and maintained push buttons.
  • 22.5mm Emergency StopMushroom-head e-stops in compact format.
  • 22.5mm LegendsLabeled face plates for all 22.5mm components.
  • 22.5mm Contact BlocksSnap-in 1-NO, 1-NC, 2-NO, 1-NO/1-NC configurations.
  • 22.5mm KeysStandard and tamper-resistant key configurations.
  • 22.5mm Pilot LightsLED indicator lights in red, green, yellow, blue, white at 24V DC and 120V AC.

Frequently asked questions

Is 22mm the same as 22.5mm push button size?

Yes — the panel hole diameter is 22.5mm; manufacturers label products as either 22mm or 22.5mm interchangeably. The products fit the same panel cutouts.

Can I retrofit my 30mm panel with 22.5mm buttons?

Yes, with reducer adapters. PRT stocks 30mm-to-22.5mm adapters for panel cutouts that need the smaller modern hardware. Most operators rebuild their entire panel at once rather than mix sizes.

Do 22.5mm pilot lights work at 24V DC for control circuits?

Yes. 24V DC is the standard voltage for modern compactor pilot lights. PRT also stocks 120V AC versions for installations using line-voltage indicator circuits.

Are PRT 22.5mm buttons compatible with Schneider Harmony XB5 series?

Yes. PRT 22.5mm buttons match the Schneider Harmony XB5 form factor and contact-block design. Same applies to Siemens 3SU, Allen Bradley 800F, and Eaton M22 series.

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