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Honeywell 221CH55RB Enclosed Micro Switch

The Honeywell 221CH55-RB is a precision-engineered micro switch designed for demanding industrial environments. Its enclosed construction provides protection against dust, moisture, and other contaminants, ensuring reliable operation in harsh conditions. The switch is built to withstand continuous temperatures up to 300°F and features corrosion-resistant sealed parts per MIL-S-8805. Typical applications include industrial automation, automotive systems, and other applications requiring a compact, durable, and reliable switching solution. The switch's plunger seal material is Viton A.

Authorized Distributors
Source:Newark
Part No:221CH55-RB
Stock:1
Inv Date:06-01-2026
Price: Unit price: $1786.31
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Source:DigiKey
Part No:221CH55-RB
Stock:0
Inv Date:06-01-2026
Price: Unit price: $1928.79
Buy/RFQ:
Part No:221CH55-RB
Stock:0
Inv Date:06-02-2026
Price: Unit price: $1770.76
Buy/RFQ:
Part No:221CH55-RB
Stock:1
Inv Date:06-01-2026
Price: Unit price: $1507.43
Buy/RFQ:

Honeywell 221CH55RB Enclosed Micro Switch Specifications:

  • Free Position: 0.072 + .004 WIDE X.038+.003 DEEP
  • Keyway: 0.040 DEEP KEYWAY
  • Roller Diameter: 7-5 DIA X.12 WIDE
  • Plunger Seal Material: VITON A
  • Overtravel Force: 1.8 MAX LB
  • Operating Force: 3-63 LB MAX
  • Pretravel: 0.040 MAX
  • Differential Travel: 0.020 MAX
  • Coincidence of Operating and Releasing: 0.010 OF PLUNGER TRAVEL
  • Weight: 0.07 OZ MAX
  • Corrosion Resistance: Per MIL-S-8805
  • Temperature Range: Continuous temperature of 300°F

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Frequently Asked Questions

Where can I buy Honeywell 221CH55RB?

You can click on the BUY or RFQ button to purchase 221CH55RB from an authorized Honeywell distributor.

How do I troubleshoot issues or seek technical support for part 221CH55RB?

You can download the 221CH55RB datasheet or visit the Honeywell website for support.

Who is the manufacturer of 221CH55RB?

Honeywell

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