D4MC-5020
ActiveD4MC Compact Limit Switch Roller Lever
Omron D4MC compact limit switch with roller lever.
Common Applications
Compact limit switch for position detection on automated equipment. Smaller than the Honeywell BZ series — fits in tighter spaces. IP67 sealed for washdown environments. Common on packaging machines and pick-and-place robots.
Specifications
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Actuator Function
Momentary = springs back when released. Maintained/latching = stays pressed until pressed again.
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Roller lever
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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, CE
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Contact Configuration
The electrical switching arrangement.
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SPDT
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IP Rating
IP67: Dust-tight and survives temporary water submersion (1m for 30 min). Handles oil splashes, steam cleaning, and rain.
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IP67
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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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10,000,000 cycles
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Installation Quick Reference
Panel cutout: 22mm. 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.
Dimensions
Wiring Diagram
Troubleshooting
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.
Where to Buy
Price range
$37.12 — $68.22
across 2 distributors
Quick Specs
- Actuator Function
- Roller lever
- Certifications
- UL, CE
- Contact Configuration
- SPDT
- IP Rating
- IP67
- Mechanical Life
- 10,000,000 cycles
What People Are Saying
“Compact limit switch for position detection on automated equipment. Smaller than the Honeywell BZ series — fits in tighter spaces. IP67 sealed for washdown environments. Common on packaging machines a”
