M22-DP-Y

1. Overview

The Eaton M22-DP-Y (article no. 216718) is a 22mm yellow mushroom-head pushbutton actuator from the RMQ-Titan M22 modular command series, formerly also marketed as Moeller / Eaton-Cutler Hammer. It is a front-panel actuator element only — a spring-return (momentary) mushroom-head operator with a 40mm head diameter and 22.5mm panel cutout — requiring separate contact blocks (e.g., M22-K10/K01) and optionally the M22-A mounting adapter/bracket for panel attachment. The M22 platform is modular and space-saving, allowing on-the-job assembly and back-of-panel contact block changes without removing the operator from the panel.

2. User Sentiment

No direct end-user forum reviews or ratings were found in the research set, though the product enjoys extremely wide global distributor availability (11+ distributors on Octopart alone, present in EU, Americas, Middle East, Asia, and available for agricultural/mobile machinery as OEM replacement parts). The Radwell substitute listing (M22-DP-Y-SUB) attests to active aftermarket demand. Polish and Dutch agricultural parts suppliers (BartsParts, Onninen, Agricola Triviño) list it as a standard replacement, suggesting high field reliability and long production life. No significant complaints or quality issues were found across the research findings.

3. Real-World Applications

The M22-DP-Y is primarily deployed in industrial control panels, machine tool operator stations, conveyor and process control consoles, and automation cabinets. UK retailer Rapid Electronics explicitly classifies it as a "kill switch" used for "emergency stop functions in industrial settings," though it should be noted the M22-DP-Y is a momentary actuator (not a latching E-stop) and is yellow — not the standard red/yellow E-stop color — so yellow is typically used for general control functions or specific machinery-defined stop functions. It also sees wide use in agricultural machinery and mobile equipment, with multiple European agro-parts distributors stocking it as a replacement part. Compatible with Eaton's SmartWire-DT distributed wiring system.

4. Technical Specifications

• Type: Mushroom-head pushbutton actuator / operator (front element only — contact blocks NOT included)
• Series: RMQ-Titan M22 Modular (also branded Eaton Moeller, Cutler Hammer)
• Article No.: 216718 (also Y7-216718, Catalog No. M22-DP-YQ)
• Panel Cutout (Mounting Hole): 22.5 mm
• Mushroom Head Diameter: 40 mm (per Radwell substitute spec and The Button Index; Rapid Electronics lists 36.5mm — minor discrepancy)
• Action: Momentary (spring-return; does NOT latch — contrast with M22-DRP-Y which is maintained/push-pull latching)
• Color: Yellow (mushroom head + button plate); blank / no legend inscription
• Bezel: Titanium-color (described as "titanium" in Eaton/Rexel/Farnell German sources; described as "silver" in Radwell/RSP Supply/Eaton US-market sources — same color, different descriptor)
• Illumination: Non-illuminated
• IP Rating: IP66 / IP67 / IP69K (panel-sealed when installed with appropriate gasket)
• NEMA Rating: NEMA 4X, 13
• Mechanical Life: 5,000,000 operations (per Eaton official / RSP Supply)
• Operating Temperature: -25 to +70°C
• Standards: IEC/EN 60947, VDE 0660; UL, CSA, CE certified
• SmartWire-DT: Compatible with SWD-RMQ connections
• Weight: ~14.8 g
• Stable Positions: 1 (momentary — returns to off position on release)

5. Ordering & Compatibility

Pricing ranges from approximately £13.64 (Rapid Electronics UK), €18.61 (Spain), MXN $371.49 (Mexico), and USD $14.92–$24.87 (US market, varies by distributor). DigiKey lists $24.87 for qty 1, with breaks down to $16.04 at qty 500. The M22-DP-Y is the actuator head only; compatible contact blocks include M22-K10 (1 NO), M22-K01 (1 NC), M22-K11, M22-K20, M22-K02, M22-K21, M22-K12 — up to 6 contact blocks per operator. The M22-A mounting adapter/bracket is often sold as a bundle (M22-DP-Y+M22-A, Eaton art. 78635836). The -X variant (M22-DP-Y-X, art. 216737) omits the button plate (buttonless). Related variants: M22-DRP-Y (maintained/latching yellow mushroom), M22-DPG (momentary green mushroom), M22-DPR (momentary red mushroom).

6. Known Issues

Mouser Canada's product snippet erroneously shows "RED 1NC" attributes for this yellow momentary SKU — a database display artifact, not a product defect. One minor discrepancy exists in mushroom head diameter: most sources (Radwell substitute, The Button Index) state 40mm, while Rapid Electronics lists 36.5mm; the 40mm figure is corroborated by more sources. The yellow color on a mushroom actuator is occasionally misrepresented as an emergency-stop device (Rapid Electronics calls it a "kill switch"), but standard IEC/NEMA E-stop conventions use red mushroom on yellow background; a plain yellow mushroom is not an E-stop per IEC 60947-5-5 — buyers should confirm application requirements. No significant reliability or quality issues reported.