Lever switch Snap-action switches, S840

single-polevibration-resistantimpact-resistant

One feature of snap action elements is the switching speed independent of the actuation speed. This indirect switching operation is achieved by a snap mechanism allowing a defined switching action. In such a way the S840 is excellently suited for low actuation speeds, e.g. in motors or spindle limit switches. The S840 is provided with a positive opening mechanism. Even after a short circuit, the welded contact opens. For this reason the snap action switch is built into safety circuits. Features: - Positive opening operation: Reliable interruption even in case of contact welding, in compliance with IEC 60947-5-1, Annex K - Single break contacts: Changeover with single break contacts. Also available with NC or NO contacts. Compact design. - Self-cleaning contacts: Constantly low contact resistance ensures high contact reliability over the entire design life of the switch - Sealed to: IP40 in accordance with IEC 60529 - Contact material: Silver or gold