Snap Action Switch Catalog - 37 Pages

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Catalogue excerpts

Product Specifications Design and specifications are subject to change for improvement without prior notice. Microprecision Electronics SA - Made in Switzerland - www.microprecision.ch

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The microswitches and safety switches are manufactured under an ISO 9001 certified quality system and are also approved to follow the international standards under UL, ENEC and CSA. The products are specifically designed for a low differential travel, a precise actuating point, wide operating temperature range and sealing up to IP68. For these reasons, our products are used in the most demanding industrial applications  light actuating force for pressure switch : applications, small differential travel in electromagnetic break control and IP68 for underwater switching applications are just some...

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Positions / Forces COMMAND CHARACTERISTICS TERMINOLOGY Contact variations ACTUATOR POSITIONS ACTUATOR TRAVEL ACTUATOR FORCES SPST Single-Pole Single-Throw Double-Break SPST Single-Pole Double-Throw Single-Break Contact materials The spring blade is made of copper/beryllium with the moving contact made of silver. The fixed NC and NO contacts are produced of a silver-copper bi-metal band. Those materials are used for standard applications under standard power. For low power switching below 100 mA/24V, we recommend gold contacts to prevent any contact corrosion. Pre-Travel Distance between the free...

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When closing a contact of a snap action switch, you may observe a bouncing of the mobile contact on the fixed contact before establishing a firm contact. These bounces may last between 0.2 and 4 ms depending on the type. When used under low power, this bouncing may cause malfunctioning of the connected electronics. If this happens an added low-pass filter may eliminate/reduce this effect. Swing over Time DIAGRAM CONTACT FORCE-TRAVEL This is the time taken by the mobile contact to move from one fixed contact to its rest position against the other fixed contact, including bounce time. The method...

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1st numeral Protection against solid objects The designation to indicate the degree of protection consists of the letters IP followed by two numerals. The first one indicating the protection of the housing against ingress of solid foreign bodies. The second numeral indicates the protection against harmful intrusion of water as in the table indicated below. Installation Recommendations Mounting 2nd numeral Protection against water intrusion The microswitches have to be fixed on a smooth, flat surface using the recommended screw size. Do not tighten the screw more than indicated as the switch could...

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Simple Lever The straight levers are the most robust and reliable of the lever actuators. The small switch plunger button is protected against sudden impact and an excessive force. In the initial position, the lever is pressing down the plunger button. Activating the lever releases the plunger. These levers can easily be modified by extending the lever or adding rollers or floaters. Prevent any overheating of the contacts when soldering. Using excessive heat can displace the contacts and damage the microswitch. Do not apply force to the contacts immediately after soldering. Cable Cross Section The...

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Plastic reinforced with glass fiber (PBT) Switching Circuit Change over - snap action with blade spring in copper/beryllium Basic snap action microswitch. A precision microswitch for high breaking capacity, the MP40 series offer IP40 protection with screw lugs or solder terminals using a wide range of interchangeable actuators. The switch is ideally suited for industrial applications with its wide operational temperature range and optional low actuating force. Silver - optional gold Screw, solder lugs, protection cover Stainless steel Housing IP40 Connection IP00 Protection Cover IP20 Distance...

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Type 0 : Basic switch - Pin Button Type 1A : Telescopic with Short Thread Type 1S21 : Telescopic Built-In Type 1A58 : Telescopic with Thread Type 1SP21 : Telescopic Built-In with Protective Sleeve Type 1BL : Telescopic with Roller Optional : stainless steel roller, transvers roller Type 2A : Simple Lever - Direct Action - Microprecision Electronics SA - Made in Switzerland - www.microprecision.ch Microprecision Electronics SA - Made in Switzerl

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Type 3A : Simple Lever - Indirect Action - Type 7A40 : Simple Adjustable Lever - Direct Action - Optional : lever mounted on opposite side Optional : lever mounted on opposite side Type 4AL : Simple Lever with Roller - Direct Action - Type 7AC : Simple Adjustable Lever with Wire – Direct Action - Actuating Force Fa max. (N) Release Force Fr min. (N) Operating Position Pa (mm) Over-Travel sr min. (mm) Differential Travel sd max. (mm) Optional : lever mounted on opposite side Type 5AL : Simple Lever with Roller - Indirect Action - Type 8AL40 : Simple Adjustable Lever with Roller - Direct Action...

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Electrical Circuit Ordering Information Actuator Code Circuit Direct Action Indirect Action Screw Terminals Actuator Code Circuit Solder Lugs Silver Contact Gold Contact Telescopic Built-In with Protective Sleeve Telescopic Telescopic with Short Thread Telescopic with Thread Telescopic with Roller Simple Lever - Direct Action Simple Lever - Indirect Action Simple Lever with Roller - Direct Action Simple Lever with Roller - Indirect Action Simple Lever with Bending Roller - Indirect Action Simple Adjustable Lever - Direct Action Simple Adjustable Lever with Wire – Direct Action A protection cover...

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Plastic reinforced with glass fiber (PBT) Fluorosilicone - other optional materials available Sealed basic snap action microswitch. A precision microswitch for high breaking capacity, the MP90 series offers IP67 protection using a wide range of interchangeable actuators. Switching Circuit Change over - snap action with blade spring in copper/beryllium Silver - optional gold The housing is IP67 sealed using an ultrasonic welding process. High operating temperature and long life makes this switch a perfect solution for industrial applications Stainless steel Distance between Contacts Actuation Force Between...

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All Microprecision Electronics catalogues and technical brochures

  1. Series WA and WB

    3 Pages

    En
  2. Series WQ and WT

    3 Pages

    En
  3. Series VSM

    2 Pages

    En
  4. Serie VSMP

    2 Pages

    En
  5. MP600

    4 Pages

    En
  6. MP 600

    2 Pages

    En
  7. MP900

    2 Pages

    En
  8. MP720

    6 Pages

    En
  9. MP700

    4 Pages

    En
  10. PCB mount panel

    1 Pages

    En
  11. Led Night Vision

    1 Pages

    En
  12. MP500

    2 Pages

    En
  13. MP 700

    4 Pages

    En

Archived catalogues

  1. MP 900

    2 Pages

    En