21CH38-18 – Honeywell Limit Switch: Rugged, Reliable, and Ready for Industrial Use

• Brand & Model: Honeywell 21CH38-18 – a robust enclosed limit switch.
• Contact Form: SPDT (single pole double throw) for flexible circuit control.
• Actuator Style: Roller actuator reduces friction and wear over time.
• Electrical Ratings: 4A at 28VDC ensures reliable switching in DC circuits.
• Operating Force: Requires 6 lb to 12 lb for positive actuation feedback.
• Termination Style: Wire leads simplify panel mounting and wiring.
• Mounting Style: Panel mount design secures the switch in place.
• Weight: 0.737 Kg reflects its rugged, all-metal enclosure.
• Illumination: Non-illuminated – ideal for applications without indicator needs.

Technical Specifications – Honeywell 21CH38-18

• Manufacturer: Honeywell – a trusted name in industrial controls.
• Product Number: 21CH38-18 – order with confidence using this exact code.
• Voltage Rating DC: 28 VDC – perfect for low-voltage DC systems.
• Current Rating: 4 A – supports moderate power loads safely.
• Environmental Tolerance: Enclosed housing resists dust, oil, and debris.
• Interference Rejection: Mechanical design ignores electrical noise common in factories.

Installation Guide for 21CH38-18 Limit Switch

• Mount the switch on a flat panel using two M4 screws (not included).
• Connect the common (COM), normally open (NO), and normally closed (NC) wires correctly.
• Adjust the roller actuator to align with your machine’s cam or moving part.
• Apply 6-12 lb force to test the switching point before final tightening.
• Keep wire leads away from sharp edges and high-temperature surfaces.

Package List – Honeywell Enclosed Switch 21CH38-18

• 1 x Honeywell 21CH38-18 limit switch with roller actuator.
• Pre-attached wire leads for immediate connection.
• Installation instruction sheet (basic diagram only).

Shipping & Delivery Options

• We ship via FedEx, UPS, and DHL for global fast delivery.
• Tracking number provided within 24 hours after dispatch.

FAQ – Honeywell 21CH38-18 Limit Switch

• Q: Can I use this switch with AC voltage? A: This 21CH38-18 works best with DC 28V; not rated for AC.
• Q: Is the roller actuator replaceable? A: The roller is factory-sealed; replace the whole switch for safety.
• Q: What is the operating temperature range? A: Honeywell rates this model for -20°C to +70°C.
• Q: Does it include mounting screws? A: No, you will need two M4 screws separately.

Author: Ubest Automation – your reliable partner for industrial controls.

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