M22-DH-R
Hoạt động22mm Red Extended Pushbutton Actuator (M22)
Eaton M22 extended red push button.
Ứng Dụng Phổ Biến
Extended red for accessible stop. Raised above panel surface for easy pressing with gloves or without direct line of sight.
Research Notes
1. Overview
The M22-DH-R is an Eaton (Moeller) RMQ-Titan M22 modular pushbutton actuator/operator: 22.5 mm, extended (raised) button, momentary (off→on) action, non-illuminated, red button with silver metal bezel. Like the rest of the M22 line it is a front element only — the contact block and (if needed) mounting adapter are ordered separately, so this SKU carries no integral switching. The plastic-bezel variant is M22S-DH-R; adding a contact gives complete-device SKUs (e.g. M22-DH-R-K11 = +1 NO/NC, M22-DH-R-K01 = +1 NC).
2. User Sentiment
As a mainstream industrial component it has little consumer sentiment, but the M22 platform is widely respected for build quality, the tool-free clip-in contact system, and broad availability. The extended/raised head is chosen when operators need an easy-to-hit button (e.g. gloved use), balanced against a higher accidental-press risk than the flush M22-D.
3. Real-World Applications
Machine control panels, start/reset and general control stations, and OEM equipment where a raised red pushbutton is wanted (note: a raised red momentary is a control button, not a latching E-stop — that is Eaton's M22-PV/PVT mushroom line).
4. Technical Specifications
- Type: M22 extended (raised) momentary pushbutton actuator (front element only)
- Color / bezel: Red button, silver (chrome) metal bezel (M22S-DH-R = plastic bezel)
- Size: 22.5 mm cutout
- Contact: none integral — add M22 contact blocks (M22-K10=1NO, M22-K01=1NC, M22-K11=1NO+1NC, M22-K20=2NO)
- Sealing: IP67 / IP69K at the front; NEMA 4X / 13
- Mechanical life: ~5,000,000 operations
- Approvals: UL, CSA, CE (per built-up device)
5. Ordering & Compatibility
Order the actuator plus a contact block + fixing adapter, or buy a pre-bundled complete device (M22-DH-R-K01 / -K11, etc.). Fits standard 22.5 mm cutouts; interchangeable within the M22 ecosystem (holders, legend rings, guards). Stocked by Eaton, Amazon, Platt, Seagate Controls, and general electrical distributors.
6. Known Issues
No notable reliability issues; a mature modular design. The usual buying pitfall is the modular one — a bare M22-DH-R actuator does nothing until a contact block is added, so first-time buyers sometimes receive "just the button."
4 sources
- M22-DH-R | Eaton M22 modular pushbutton — eaton.com
- Eaton M22-DH-R Pushbutton 22mm Extended Red Actuator — amazon.com
- Eaton M22S-DH-R Extended Pushbutton M22 — platt.com
- M22-DH-R Red Extended Momentary Push Button — seagatecontrols.com
Thông số kỹ thuật
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Actuator Type
The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.
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Extended
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CSA, CE
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Red
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Component type
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Actuator / front element only (contact block separate)
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Contact Configuration
1NO + 1NC: One circuit closes and one opens when pressed. Common for start buttons that also signal 'running' state.
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None integral — add M22-K10 (1NO)/K01 (1NC)/K11/K20
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Cutout Diameter
The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.
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22.5mm
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IP Rating
IP69K: Dust-tight and withstands high-pressure, high-temperature steam jets. Built for food processing washdown environments.
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IP67/IP69K (front); NEMA 4X/13
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Mechanical Life
How many press cycles before mechanical failure. Higher is better — 10M cycles at 100 presses/day = 274 years.
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~5,000,000 operations
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Series
The manufacturer's product family. Products in the same series share mounting systems and accessories.
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M22
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Hướng Dẫn Cài Đặt Nhanh
Panel cutout: 22.5mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Kích thước
Sơ đồ đấu dây
Khắc phục sự cố
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Nơi Mua Hàng
Dải giá
$15.87 — $131.11
từ 3 nhà phân phối
Thông số kỹ thuật nhanh
- Actuator Type
- Extended
- Certifications
- UL, CSA, CE
- Color
- Red
- Component type
- Actuator / front element only (contact block separate)
- Contact Configuration
- None integral — add M22-K10 (1NO)/K01 (1NC)/K11/K20
Những Đánh Giá Từ Khách Hàng
“Extended red for accessible stop. Raised above panel surface for easy pressing with gloves or without direct line of sight.”