M22-D-Y

1. Overview

The Eaton M22-D-Y is a 22.5 mm non-illuminated, flush-mount momentary pushbutton actuator from the RMQ-Titan (M22 Modular) product family, formerly also branded as Cutler-Hammer and Eaton Moeller (catalog number 216598). It features a yellow button plate and silver/titanium bezel, and is part of Eaton's industrial heavy-duty pilot device line designed for global machine control applications. The M22 series is a modular, field-configurable system where the actuator and contact blocks are purchased separately and assembled as needed.

2. User Sentiment

No detailed user reviews are present on distributor pages for the M22-D-Y specifically — retailer listings note zero reviews posted. However, the M22 RMQ-Titan family is widely stocked by major industrial distributors (Galco, RS-Online, IMC-Direct, Elliott Electric, Automation24) since at least 1983, indicating sustained industry adoption. The series is praised in Eaton's own documentation for ergonomic design, flexibility, and reduced inventory through modularity. The field-convertible maintained-to-momentary feature is highlighted as a practical differentiator. No notable complaints or failure modes have surfaced in available sources.

3. Real-World Applications

The M22-D-Y is used in industrial machine control panels across food and beverage, chemical, and process industries where IP67/IP69K washdown resistance is required. The yellow color convention is used for start/enable or caution functions on machine operator stations. Eaton markets the M22 line for HVAC, factory automation, emergency stop assemblies, and OEM equipment panels. It is compatible with SmartWire-DT and AS-i fieldbus systems (via separate interface modules), enabling integration into modern PLC architectures.

4. Technical Specifications

• Type: Non-illuminated flush momentary pushbutton actuator (actuator only — contact blocks sold separately)
• Series: M22 RMQ-Titan (Eaton Moeller 216598)
• Mounting hole: 22.5 mm (22 mm nominal)
• Button color: Yellow
• Bezel: Silver (titanium finish)
• Operation: Momentary (spring-return); field-convertible to maintained via locking ring
• Enclosure / IP rating: IP66, IP67, IP69K; NEMA 4X, 13
• Mechanical operations: 5,000,000+
• Electrical operations: 1,600,000
• Operating temperature: -25°C to +70°C (-13°F to 158°F)
• Terminal type: Spring cage
• Anti-rotation: Yes (notched hole / tab)
• Standards: IEC/EN 60947, VDE 0660
• Compatible contact elements: M22-K series (traditional 45 mm depth) and M22-FK (flat 29.5 mm depth); up to 6 blocks stackable
• UPC: 786685275963

5. Ordering & Compatibility

The M22-D-Y is the actuator head only and requires a separate contact block to function as a switch. Common contact blocks are M22-K10 (1 N.O., ~$6.76), M22-K01 (1 N.C., ~$6.76), M22-K11 (1 N.O./1 N.C., ~$13.52), and M22-K20 (2 N.O., ~$13.52). The M22-A mounting adapter is included with the actuator as standard. Retail pricing ranges from ~$7.10–$17.12 depending on the source; list price is approximately $11–$17. Ready-to-install kits are available (e.g., M22-D-Y-K10 on Amazon, or the M22-D-Y/-A/-K10 set at Automation24). Related part numbers: M22-D-R (red), M22-D-G (green), M22-D-B (blue), M22-D-W (white), M22-D-S (black). Illuminated variant: M22-DL-Y. Maintained variant: M22-DR-Y.

6. Known Issues

No significant issues reported. The direct-opening action on normally-closed contacts is a noted safety feature — it ensures reliable contact opening even if contact welding occurs, complying with IEC/EN 60947 requirements. One minor note: the product appears under multiple legacy names (Cutler-Hammer, Eaton Moeller, Eaton RMQ-Titan) which can cause confusion when searching for documentation, but all refer to the same part number M22-D-Y / catalog 216598.