Compact moulded case circuit breakers Series 8550

R. STAHL Series 8550 short-circuit breakers provide exceptional current limiting for short circuits and a high switching capacity from 100 A to 10 kA. The short-circuit trigger threshold is 16 times the nominal current. The components are designed to be modular and are therefore ideal for combining with the contactor, also available in this series, and overload relay to form a motor starter. Other applications are in power distribution boards.

  • Magnetic disconnect device for protecting against damage caused by short circuits
  • Isolating function in accordance with EN 60947-2
  • International approvals for worldwide use
  • Simple replacement or expansion of your system thanks to a modular design
  • Padlock provides locking in the "ON" and "OFF" positions
  • Ergonomically shaped operating lever guarantees that the system can be switched on and off safely
  • Large cable dia. range of the main terminals

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Product variant
Rated operational voltage AC
Rated operational voltage AC (NEC)
Rated operational current
Main contacts
1st auxiliary function
2nd auxiliary function
3rd auxiliary function
Min. ambient temperature
Max. ambient temperature
Connection cross-section
Connection cross-section AWG

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