Eaton 22 mm Key Switch Accessories Professional range of Eaton 22 mm key operated button switch accessories. A range of accessories include yellow emergency labels, N/O contacts, threaded securing rings, adapter rings and flush mounting plates. Product Specification Contact rating 30 V DC 100 mA Mechanical service life ´10 4 times Test voltage 1000V 1 minute (key terminal) Index angle 90° Soldering temperature Operating temperature range -20°C to +55°C