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Fuse, Connector, Snap-action switch, Cam switch, DC contactor
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| ® SCHALTBAU | ||||||||||||||||||||||||||||||||||||
| Snap-actionswitches I Page8 | ||||||||||||||||||||||||||||||||||||
| Snap-action switches with positive opening operation-arid self-cleaning contacts 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 S 840 is provided with a positive opening mechanism. Even after a short circuit the welded contact piece opens. For this reason the snap action switch is built in safetycircuits. | Snap-action switches with positive opening operation and self-cleaning double-break contacts S847 Series snap-action switches in modular design are available with three degrees of protection according to IEC 60529: IP40 (protected against electric shock), IP60 (dustproof), and IP67 (waterproof). Due to their self-cleaning double-break contacts as well as their protection against dust, moisture and pollutants, S847 Series switches are highly reliable even at low contact ratings.The switches are, therefore, also much used for handling low currents and voltages. | |||||||||||||||||||||||||||||||||||
| Features | ||||||||||||||||||||||||||||||||||||
| Performance according to IEC 60947-5-1 Positive opening operation, IEC 60947-5-1 annex K, Dimensions according to DIN 41635, type A (miniature switch) Degree of protection IP40 according to IEC 60529 Wiping, self-cleaningcontacts Contactmateriakhardsilverorgoldalloy | Performance according to IEC 60947-5-1 Positive opening operation, IEC 60947-5-1 annex K, Long overtravel after positive opening operation Dimensions according to DIN 41636-6, type F (miniature switch) Degree of protection IP40, IP60, IP67 according to IEC 60529 Self-cleaning, double-break contacts Form Z circuitry SPDT-DB, galvanically isolated Quick-connect terminals according to DIN 46247-3 | |||||||||||||||||||||||||||||||||||
| ( Catalogue D18.en ) | ( Catalogue D47.en ) | |||||||||||||||||||||||||||||||||||
| Specifications Series ► Conventional thermal Utilization category Rated impulse withstand voltage Uimp Degreeofprotection Actuating force Actuatortravel Mechanical endurance Ambient temperature Dimensions (LxHxD)in mm Weightwithout | ||||||||||||||||||||||||||||||||||||
| S840 | S847 | |||||||||||||||||||||||||||||||||||
| 4kV/PD3 IP60 | 4kV/PD3 IP67 | |||||||||||||||||||||||||||||||||||
| IP40 | ||||||||||||||||||||||||||||||||||||
| lOmillioncycles | 5million | 5 million | ||||||||||||||||||||||||||||||||||