M22-DH-G

1. Overview

The Eaton M22-DH-G is a 22.5mm non-illuminated, extended (raised) pushbutton actuator from the RMQ-Titan M22 modular command series — also marketed under the legacy Moeller and Cutler-Hammer brands. The part-number code decodes as: M22 = 22.5mm RMQ-Titan modular platform; DH = extended/raised actuator style ("hoch" = high/raised in German, versus D = flush); G = green button color. It is an actuator-only front element (catalog number 216643, EAN 4015082166434) — it ships with a contact block mounting adapter but does not include contact blocks, which must be ordered separately (e.g., M22-K10 for 1NO, M22-K01 for 1NC, M22-CK for combined). The M22 line is modular, allowing operators to be field-converted between momentary and maintained action, and supports illuminated and non-illuminated configurations across the same 22mm footprint.

2. User Sentiment

No forum or enthusiast community reviews were found in the findings for this specific part. Industrial distributor listings (Radwell, Elliott Electric, Galco, Newark, DigiKey, Mouser) consistently list it as a reliable, widely stocked workhorse in the M22 family. Kempston Controls and Electric Automation Network describe it as a standard industrial control component suitable for demanding environments. eBay resellers (primarily from China) actively trade new-old-stock units at $12–$21, suggesting healthy aftermarket demand. No significant complaints or quality issues appear in the source material.

3. Real-World Applications

The M22-DH-G is used in industrial control panels, machine start/stop circuits, and motor control centers wherever a green "start" or "run" momentary pushbutton is required. The green color conventionally denotes START or GO in IEC/NEMA machine safety color coding. The IP67/IP69K rating makes it suitable for food processing, chemical plants, washdown environments, and outdoor enclosures. Its NEMA 4X/13 ratings cover dust-tight and oil-splash environments. The Eaton M22 family is specified in industrial automation, OEM machinery, manufacturing lines, conveyors, and process control panels globally.

4. Technical Specifications

• Type: Modular pushbutton actuator / front element (operator-only, not complete assembly)
• Platform: Eaton RMQ-Titan M22 (22.5mm modular)
• Actuator Style: Extended / raised / protruding ("DH" = hoch; protrudes above panel surface — NOT flush)
• Button Color: Green
• Bezel Color/Material: Silver (plastic front ring / Kunststoff Frontring)
• Action: Momentary / spring-return (non-latching; 1 stable position, 2 positions total)
• Illumination: Non-illuminated
• Mounting Hole: 22.5mm diameter (22mm notched hole with anti-rotation tab)
• Button/Cap Diameter: 29.7mm
• Ingress Protection: IP66, IP67, IP69K
• NEMA Rating: NEMA 4X, NEMA 13
• Operating Temperature: -25°C to +70°C
• Mechanical Life: 5,000,000 operations
• Dimensions: 30mm L × 30mm W × 35mm H (depth)
• Weight: 11.14g (0.012 kg)
• EAN: 4015082166434
• Catalog Number: 216643
• Country of Origin: Germany (DE)
• Field Convertible: Yes — momentary to maintained (slide lever)
• Certifications: CE, UL 508, CSA C22.2 No.94-91, CSA C22.2 No.14-05, VDE, IEC/EN 60947-5, IEC/EN 61439
• RoHS: Compliant
• Packaging: Cardboard box, 5 pieces per box
• Warranty: 1 year from installation or 18 months from shipment (Eaton Policy 25-000)

5. Ordering & Compatibility

The M22-DH-G ships as actuator-only and includes a contact block mounting adapter. Compatible contact blocks are ordered separately: M22-K10 (1NO), M22-K01 (1NC), M22-K11 (1NO+1NC), M22-K20 (2NO), and M22-CK combined contact blocks. The mounting adapter/clip M22-A is available as an accessory (note: some listings bundle M22-DH-G+M22-A together). Related variants include M22-DH-G-X1 (216657 — same extended green actuator but with titanium bezel and "I" inscription) and M22-DH-R (red), M22-DH-Y (yellow), M22-DH-W (white). Retail pricing: ~$10.99–$14.34 USD (Elliott Electric ~$11.29–$12.92, DigiKey $14.34 single/~$9.20 at 1000+ units, Platt $10.99, Raptor SG SGD 33.13). Available from DigiKey (5730-M22-DH-G-ND), Mouser, Newark (10R1804), RS Components (Stock 847-5064), TME, Grainger (60JN08), Westburne (EATM22DHG-QE), and many global distributors.

6. Known Issues

No significant field reliability issues or product defects reported in available sources. The one notable distinction to flag is the difference between M22-DH-G (silver/plastic bezel, no inscription) and M22-DH-G-X1 (titanium bezel, "I" inscription, SmartWire-DT compatible) — these are frequently cross-listed and may cause ordering confusion. The product is actuator-only; ordering without specifying contact blocks is a common mistake noted implicitly across distributor listings that explicitly flag "contact blocks must be ordered separately."

DATA QUALITY NOTE — NO MISMATCH DETECTED: The catalog entry (product ID 308, slug eaton-m22-dh-g, name "22mm Green Extended Push Button", subcategory "extended-momentary") is fully consistent with all source data. DH = extended/raised (confirmed across English, German, French, Italian, Spanish, Norwegian, Japanese, Chinese sources). Color = green (G suffix confirmed). Action = momentary/spring-return (confirmed). This product is an actuator-only front element — the catalog entry does not claim it is a complete assembly, which is correct. No extended-vs-flush mislabel found (contrast with #302, #280 where mislabels were flagged). Catalog subcategory "extended-momentary" is accurate.