Microswitch (micro anahtarlar-şalterler)

„Connect – Contact – Control." This is the slogan under which Schaltbau GmbH develops and manufactures electromechanical components for railway equipment and industry. Our experience of manufacturing in accordance with the high safety standards as required for traffic engineering also makes us a reliable source of developing products for many other lines of industry. The complete micro-switch standard program is complemented by customer-specific system solutions.

Snap-action switches, style F

Miniature switches, style F, 50 × 12 mm. 4 terminals, continuous current up to 16 A. Positive opening operation.

• Schnappschalter mit Zwangsöffnung Baureihe S800, S804, S814, S820
• Schnappschalter mit Zwangsöffnung und selbstreinigenden Doppel-Kontakten Schutzart IP40 Baureihe S826
• Schnappschalter mit Zwangsöffnung und selbstreinigenden Doppel-Kontakten Schutzart IP40 ... IP67 S847
• Baureihe S850 Schnappschalter mit Doppelöffner, Zwangsöffnung und selbstreinigenden Kontakten

Snap-action switches, style A

Miniature switches, style F, 35 × 11 mm. 3 terminals, continuous current up to 10 A. Positive opening operation.

• Schnappschalter, Baureihe S840, S845, S846
• Flyer: Schaltbau S870 mit Schraubanschluss und Zwangsöffnung (de/en)
• Detailinformation Schnappschalter S870

V4 snap-action switches

Subminiature switches: 20.5 × 6.6 × 9.4 mm. 3 terminals, continuous current up to 6 A. Positive opening operation.

• Baureihe S880 Schnappschalter mit Zwangsöffnung und selbstreinigenden Kontakten

Enabling switches

Single pole momentary-action switches for safe manual operation. 3 positions: OFF-ON-OFF. Positive opening operation.

• Flyer S834 2-poliger Zustimmungsschalter (de/en)
• Detailinformation: Einpoliger Zustimmungsschalter mit Zwangsöffnung Baureihe S834

Technical features

Snap-action switches are designed with a snap mechanism that allows extremely fast switching, practically regardless of the duration of actuation. This makes the operating position precisely reproducible and controls the arc more efficiently.

Snap-action switches from Schaltbau are designed for industrial applications that place high demands on the reliability of both components and systems. They can switch both control currents and loads reliably and precisely. They are capable of doing so up to 10 million times, depending on the series.

Special features of Schaltbau snap-action switches:

• Double interruption: distribution of the switching-off task to two contacts
• High electrical switching capacity and durability under long-term use
• High changeover speed
• Short bounce times (from 1.7 to 3.5 ms, depending on series)
• Snap mechanism and electrical contact system decoupled
• Self-cleaning contact system
• Mechanical working life of up to 10 million operating cycles
• Reliable opening of the break contacts due to positive opening operation
• Flat, compact design, mounting in series possible
• Versions with higher ingress protection ratings up to IP67
• High vibration and shock resistance
• Transparent housing for inspecting the contacts

Decoupling of mechanical and electrical elements

The mechanical snap-action system and the electrical contact system are constructed separately in many series: this keeps the current heat that arises from impairing the mechanical spring characteristics of the snap mechanism.

Self-cleaning contacts

We achieve high contact reliability by using V-shaped contacts and due to the friction motion between the contacts. Thanks to this self-cleaning feature, the contact resistance of the switch remains constant throughout its entire working life (important for low currents).

Double interruption

In the case of double interruption, as opposed to single interruption, the voltage is distributed between two fixed contacts. This makes it possible to connect higher voltages and power outputs with the same contact distance. Switches with double-break contacts have a longer electrical working life and greater contact reliability at the same time.

Galvanic separation

In the case of double interruption with galvanic separation, the two electrical circuits are isolated from each other by the mechanical design. This enables break and make contacts to switch various electrical circuits at the same time (for example load and control current).

Positive opening operation

For an opening contact element, positive opening operation ensures that the closed circuit is opened reliably even if the contacts become welded together or the springs break.