The Appleton UCB9R is a Unicode 2 Series contact block designed for use in hazardous location control stations. Here's a full breakdown:

 Product Overview

• Model: UCB9R
• Series: Unicode 2
• Type: Contact Block
• Contact Configuration: 1NC (Normally Closed)
• Poles: 1-Pole
• Mounting: Rail-mounted
• Material: Polyamide body with EPDM rubber seal
• Operator Type: Push button
• Dimensions: Approx. 1.54" diameter × 1.77" height
• Contact Material: Silver alloy

 Electrical Ratings

• AC: 10 A at 500 VAC
• DC: 1 A at 110 VDC

 Safety & Certifications

• Hazardous Location Ratings:
  • Class I, Division 2, Groups A, B, C, D
  • Class II, Division 2, Groups E, F, G
  • Class III
  • Zone 1 and 2 / Zone 21 and 22
• Certifications:
  • UL 508, UL 60079 series
  • CSA C22.2
  • ATEX / IECEx
  • ANSI/ISA standards