With the enclosed snap-action switch of the 1050 series the Marquardt engineers have developed a small, reliable switch with changeover, normally open and normally closed contacts. The switch complies with the DIN 41635 Form B design and guarantees maximum functional reliability with a draw spring switching system. The switch which is available with plug-in, solder and various pcb terminals also switches with very high precision at a maximum rating of 10 (1.5) A for a very long time (10E6 mechanical cycles).