Omron
Omron Roller Plunger Limit Switch, IP67, SPDT, 1A Max
Part No.
D4ER-1A21N
Procurement Intelligence
The D4ER is Omron's General Purpose Limit Switch series, designed for machinery and automation equipment to detect position/presence via roller plunger actuation. Installation requires mechanical mounting in direct contact with moving equipment parts. Verify 1A current rating matches your load; exceeding this causes switch failure.
Machine position detection systems
Before ordering — verify:
| ☐ | IP67 sealed housing |
| ☐ | Roller plunger durability |
| ☐ | SPDT contact configuration |