Schaltbau S800 Micro Switch | S800a S800b S800c S800e | Snap-action Switch | B40 B40c

S800 Series Snap-Action Micro Switches (S800a, S800b, S800c, S800e)

Product Overview:

The S800 Series micro switches are precision-engineered for control systems where safety and reliability are paramount. Known as the industrial benchmark for snap-action switches, this series features an ultra-compact V3 housing and exceptional DC breaking capacity. Whether it’s the standard S800a or the high-protection S800b/c/e variants with specialized contact requirements, the series ensures consistent contact performance under extreme temperatures ($-40$°C to $+85$°C) and high-frequency cycles. They are widely utilized in rolling stock controls, medical devices, power distribution, and industrial safety limit switches.

Featured on this page are the core S800a models and the B40 / B40c series auxiliary actuators.

Key Technical Advantages:

• Instantaneous Snap-Action: The switching speed of the contacts is independent of the operating speed, ensuring stable, arc-free disconnection even during slow actuation.

• Positive Opening Operation: Even if contacts become lightly welded, the mechanical force from the actuator forces them apart, meeting the highest safety standards.

• Long-Life Contacts: High-quality silver contacts (gold-plating optional) provide a mechanical life of over 10,000,000 cycles.

• Superior Environmental Resilience: Rugged polycarbonate or polyamide housings provide excellent flame retardancy (UL94-V0).

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • S800a (Standard snap-action micro switch, V3 size).

  • S800b / S800c / S800e (Variants optimized for different wiring methods and environmental classes).

  • B40 / B40c (Dedicated auxiliary levers, roller actuators, and mounting accessories).

• Core Technical Specs:

  • Rated Insulation Voltage ($U_i$): $250 \text{ V}$.

  • Thermal Current ($I_{th}$): $10 \text{ A}$.

  • Operating Force: Approx. $1.4 \text{ N}$ to $2.8 \text{ N}$ (depending on actuator).

  • Contact Type: SPDT (Single Pole Double Throw / 1CO).

  • Termination: Solder, fast-on, or screw terminals.