myMectronic
myMectronic

A Premier B2B Part Search

Honeywell 21CH3818 Enclosed Roller Plunger Switch

The Honeywell 21CH38-18 is a heavy-duty, enclosed roller plunger switch engineered for demanding industrial applications. Its robust construction utilizes corrosion-resistant steel for the enclosure, internal tooth, keying washer, and roller guide. Sealed to MIL-PRF-8805, this switch provides reliable performance in harsh environments. The roller guide mechanism allows for adjustment of roller direction, and the switch is designed with features like a deep keyway and a threaded hole for secure mounting. It is suitable for applications requiring a durable and reliable switching solution.

Authorized Distributors
Source:Newark
Part No:21CH3818
Stock:2
Inv Date:06-01-2026
Price: Unit price: $1473.91
Buy/RFQ:
Source:DigiKey
Part No:21CH38-18
Stock:0
Inv Date:06-01-2026
Price: Unit price: $1266.34
Buy/RFQ:
Part No:21CH38-18
Stock:4
Inv Date:06-02-2026
Price: Unit price: $1162.59
Buy/RFQ:
Part No:21CH38-18
Stock:41
Inv Date:06-01-2026
Price: Unit price: $1064.07
Buy/RFQ:

Honeywell 21CH3818 Enclosed Roller Plunger Switch Specifications:

  • Operating Force: 6 - 12 Lb
  • Full Over Travel Force: 30 Lb
  • Release Force: 4 Lb
  • Pretravel: 0.040 Max
  • Differential Travel: 0.020 Max
  • Over Travel: 0.250 Min
  • Voltage: 28 VDC Min
  • Roller Guide: Adjustable, locked in increments of 45 degrees
  • Roller Guide Lock Ring: 0.072 x 0.004 x 0.038
  • Hex Nut: 0.812 across flats x 0.125 thick
  • Internal Tooth: 0.657 x 0.030
  • Lock Washer: 0.87 x 0.022 thick
  • Tab: 0.110 wide
  • Enclosure: Corrosion Resistant Steel
  • Keyway: Deep
  • Hole for Thread: 5/8 - 24 UNE F within 0.125 of shoulder
  • Weight: 26.0 OZ Max

Buy the 21CH38-18 HONEYWELL Enclosed Roller Plunger Switch | myMectronic

Purchase the Honeywell 21CH38-18 securely and efficiently through our online platform.

Buy Now

Frequently Asked Questions

Where can I buy Honeywell 21CH3818?

You can click on the BUY or RFQ button to purchase 21CH3818 from an authorized Honeywell distributor.

How do I troubleshoot issues or seek technical support for part 21CH3818?

You can download the 21CH3818 datasheet or visit the Honeywell website for support.

Who is the manufacturer of 21CH3818?

Honeywell

Honeywell Part List

Browse and search other Honeywell parts, locate datasheets and stock

Sponsored by