SAFETY MICRO SWITCHES
To comply with critical safety functions, control circuit devices and switching elements must use direct opening action electrical contacts that conform to IEC 60947-5-1 Annex K, denoted by a symbol of an arrow in a circle.
Safe-T-Products has developed a series of safety micro switches with silver alloy contacts for its range of Safe-T-Products that have been tested to, and comply with, IEC 60947-5-1 Annex K (see test certificates). Pure silver is the best conductor for reliable and consistent micro current and voltage flow but is susceptible to hydrogen sulfide tarnishing causing the micro switch to fail. To circumvent tarnishing and/or other material to contaminate the electrical contact zone, our micro switches are sealed to IP 66/67.