This document describes the features and specifications of the C&K 3 Series thumbwheel switches. These switches have the most complete product offering in the industry and are suitable for a variety of applications, including test and measurement equipment, industrial equipment, and computer devices.
The C&K 3 Series thumbwheel switches from ITT are offered in a variety of mounting styles, terminations and functional codes for industrial and computer equipment. The leaflet lists features, typical applications and ordering options such as snap‑in front mount, rear mount, and customizable sections.
Technical specifications include contact ratings, voltage ranges, electrical life, and material details. Ordering information, part numbers, and a configuration form are provided to help customers specify the exact switch configuration they need.
| Contact rating (carry) | 1 A continuous |
|---|---|
| Contact rating (switch) | 100 mA max |
| Operating voltage | 50 mV‑28 V DC or 120 VAC |
| Electrical life | 100,000 actuations |
| Contact resistance | Below 100 mΩ |
| Dielectric strength | ≥500 Vrms |
| Operating temperature | -10 °C to 65 °C |
| Housing material | ABS plastic |
| Thumbwheel material | ABS plastic |
| Rotor contacts | Precious metal on copper alloy |
| Stator contacts | Hard gold over nickel over copper on epoxy fiberglass |
The switches are rated for a 1 A continuous carry current and a 100 mA maximum switching current.