SB – Circular connectors for special applications

Special connectors with machined precision contacts and rubber sealed inserts for the ultimate in weather protection

SB series Plug SB ST 6P-AU: 6x pin, solder terminal, gold plated
Flange mount receptacle SB DF 6S-AU: 6x socket, solder terminal, gold plated
SB series Plug SB ST 5S+PE-AG: 5+PE socket, solder terminal, silver plated
Flange mount receptacle SB DF 5P+PE-AG: 5+PE pin, solder terminal, silver plated

Schaltbau SB series connectors are designed for use in rail vehicles, where they are expected to function reliably under the harsh conditons of daily operation.
The connectors have proven themselves over many years in this environment!

Fitted with silver or gold plated contacts in rubber sealed insulators, the SB series connectors are weather and water proof. The sturdy connectors feature impact resistant shells with threaded coupling for rapid, convenient connections.


  • Screw machine contacts, silver or gold plated
  • Sturdy metal/plastic shells: Impact resistant, UL compliant, long life
  • Sealed to IP67 when mated or not mated
  • Functional threaded coupling
  • Electrical and mechanical characteristics to IEC 61984


  • Connection of supply line and control cable for automatic train protection systems installed in bogies of railway vehicles
  • Special connector for harsh industrial applications


SB series
Number of contacts5+PE / 6-pole / 14-pole
Rated voltage (IEC 60038)5+PE: 115 V / 6-pole: 42 V / 14-pole: 20 V
Rated current Ie16 A
Contact resistance
Insulation resistance> 100 MΩ at 500 V
Standard IEC 60068-1: tmin[°C]/        tmax[°C]/ttesting time[days]-25/60/21
IP rating (IEC 60529)IP67 mated or unmated
Temperature range-25° C ... +60° C
Material, shellsPlug: PA 6 - GV 30 / Coupling nut: Aluminium, black anodized finish / Flange mount receptacle: Aluminium, black anodized finish
Material, insertsSynthetic rubber / PA 6 - GV 30
Material, sealsSynthetic rubber / PA 6 - GV 30
Shells, flammability ratingUL94V-0
Contact terminal typeCrimp / Solder
Contact materialCopper wrought alloy (Flange mount receptacle with hyperboloid socket technology)
Contact finish5+PE, 14-pole: silver / 6-pole: silver/gold
CouplingThreaded coupling
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Related Downloads

Catalogue A30 – Connectors SB
Manual A30-M
Connectors SB — Installation and Maintenance Instructions
Safety instructions connectors
Connectors M / G / GM42 / GA / NF / HV / LV / B / SB / UIC-541-58 VE / UIC558 VE / UIC-IT / ZS / ZH
/en/products/connectors/thank-you/SB – Circular connectors for special applicationsConnectors

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