Position switches and sensors
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Position switches and sensors With certainty. Just the right thing.

CONTENTS Our products – Your solutions

General Information Plastic enclosures “Whatever you need ...” — Please contact us Metal enclosures We can offer all of our switches, sensors and enclosures in a customer-specific design. So do not hesitate to contact us. We are always happy to advise you. Tel +49 571 793-0 | Fax +49 571 793-555 info@bernstein.eu | www.bernstein.eu General Information Inductive sensors Capacitive sensors Magnetic sensors

BERNSTEIN Company profile Successful for more than 70 years Technically innovative. Personally specific. Hans Bernstein founded “BERNSTEIN Spezialfabrik für Schaltkontakte” at the foot of the Emperor William Monument in the town of Porta Westfalica, Germany, in 1947. Today, the East Westphalian BERNSTEIN AG company has more than 500 employees in 10 countries and is an international, family-owned business that is now being run by the third generation. As a worldwide leading manufacturer of industrial safety switchgear and enclosures, BERNSTEIN combines these competencies in two distinct...

“Over the years, I experienced not only the creation of various new switch series changes in our manufacturing technology, but also some very significant ones. Our fully automatic manufacturing line for the C14 switch insert is state of the art technology – an important milestone for us in the BERNSTEIN factory in Hartum.” — Bernd Borcherding | Production Manager, BERNSTEIN AG COMPANY FOUNDED by Hans Bernstein in Porta Westfalica IN62, IN65 AND I81 supplement the product range of our position switches DISTRIBUTORS are act worldwide ensuring first class customer support GENERATIONS...

POSITION SWITCHES

POSITION SWITCHES | Plastic enclosure POSITION SWITCHES | Metal enclosure

POSITION SWITCHES Common features of electromechanical switches Switching systems Snap-action contact Switching diagram Switching elements lie at the heart of all electromechanical switching devices and must correspond to the respective application. Essentially there are two basic types of switching system that differ in terms of their mechanical design and consequently their scope of application: • On actuation, the normally-closed contact function is immediately followed by the normally-open contact function • In this configuration there is no overlap of the NC/NO contacts. The switch...

Contact designation In accordance with DIN 50013 and DIN 50005, the terminal designations of the contact elements always consist of two digits. The contact rows are numbered consecutively with the allocating digit (1st digit) in the actuation direction. Contacts of a switching element that belong together have the same allocating digit. The second digit is the function digit that denotes the type of contact element. 1–2 3–4 5–6 7–8 Normally-closed contact Normally-open contact Normally-closed contact with delayed opening Normally-open contact with delayed closing Degree of protection...

POSITION SWITCHES Common features of electromechanical switches Designations – Switching systems Safety switches The designations of the switching systems are identical for both plastic and metal switches. The positive opening point is indicated in the technical data sheets by the international symbol �. The scope of application for position switches has changed over time. Whereas position switches were previously used for the purpose of detecting end positions, today they are increasingly assuming functions designed to protect persons and products in machine, equipment and plant...

Safety switches are divided into two categories, Type 1 and Type 2. The difference is in the actuating elements which are completely integrated in the enclosure in Type 1 and separated from the switching element in Type 2. � = Mechanical positive opening action The term positive opening action refers to the contact separation as the direct result of a defined movement of the switch actuator by means of non-sprung parts. All parts involved in contact separation must be form-fit connected. The positive opening distance describes the minimum travel distance from the start of the actuation of...

Plastic enclosures Position switches Plastic C2 Product characteristics • Very small dimensions • 2 positive break contacts • Front- and top mounting • Different actuators Good to know ... The C2 position switch has the smallest possible dimensions and is therefore perfect for applications in very confined spaces. The two contacts are positive break ones. It can therefore be used in safety applications

Technical design • Slow- and snap action • Versions: 1 NC/1 NO, 2 NC, 2 NO Front- and top mounting (type-related) • a) 2 × round holes for M4 screws • b) 2 × insert nuts for front-side installation for M3 screws M3 (type-related) Technical data Electrical data Design insulation voltage Conventional thermoelectric current Rated operating voltage Utilisation category Short-circuit protection Protection class Mechanical data Enclosure material Thermoplastics, glass-fibre reinforced (UL 94-V0) Ambient temperature Mechanical lifetime Switching frequency Cable entry Screwed connections (M3.5)...

POSITION SWITCHES PLASTIC C2 C2-... W 1 NC / 1 NO Slow-action system Snap-action system Slow-action system Snap-action system Special features: on request Special feature: Actuator length adjustable with adjusting screw

Slow-action system Snap-action system Special feature: Button actuator, for manual operation Slow-action system Snap-action system Special feature: on request, also available with the roller turned by 90°

POSITION SWITCHES PLASTIC C2 C2-... O.M. Slow-action system Snap-action system Special features: on request Snap-action system Special features: bistable characteristics, the actuator must be returned to the initial position by external actuation (pulling); actuator length adjustable with M3 adjusting screw