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UL1077 Miniature Circuit Breakers

Uncompromising safety and comfort

UL1077 miniature circuit breakers (MCBs) ensure electrical safety in multiple applications. UL 1077 MCBs feature two different tripping mechanisms, the delayed thermal tripping mechanism for overload protection, and the magnetic tripping mechanism for short circuit protection.
 

Features

  • Characteristics: B, C, D, K, Z
  • Configurations: 1P, 1P+N, 2P, 3P, 3P+N, 4P
  • Breaking capacities up to 25 kA
  • Rated currents up to 63A
  • Real contact position indication, directly connected to the moving contact
     

Benefits

  • Extra-wide and complete range of MCBs to cover most applications and markets
  • Compliance to worldwide product standards (IEC, UL, CSA)
  • Space and time saving thanks to the unique bottom-fixing auxiliary contact
  • Established and certified quality
     

Product Range

ST200M

  • Trip curves B, C, D, K, Z
  • Interrupt rating 10/5 kA (<32 A/35-63 A)
  • 277/Y480 VAC max., 60/125 VDC
     

S200MR

  • Trip curve K
  • 277/Y480 VAC
  • Interrupt rating 10 kA
  • 0.5 to 63 A
  • Ring tongue terminals
     

S200MUC

  • Trip curves C, K, Z
  • 250/500 VDC
  • 0.5 to 63 A
  • Interrupt rating 10 kA
     

S800S

  • Trip curves B, C, D, K
  • 347/Y600 VAC max.
  • 0.5 to 63 A
  • Interrupt rating 30 kA max.
     

S800C

  • Trip curves B, C, D, K
  • 277/Y480 VAC, 500 VDC max.
  • 10 to 100 A
  • Interrupt rating 20 kA max.