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Square D MG27156 - Circuit Breaker 20A 480Y/277VAC

Square D
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Square D MG27156 is a single-pole miniature circuit breaker from the Multi9 family, designed as a molded case device for supplementary protection in commercial and industrial electrical distribution systems. It is rated for 20A at 480Y/277VAC, with an interrupting capacity of 10 kA and an impulse voltage withstand of 6000 V. The breaker features a compact DIN rail-mountable construction, weighing 5.19 lb, and is engineered for fast electrical separation during faults with an endurance of 20,000 operation cycles. It complies with UL 1077 and IEC 60947-2 standards, ensuring reliable performance in demanding environments. Typical applications include branch circuit protection in panelboards, control panels, and industrial machinery.

Key Features & Specifications
  • Type: Molded Case
  • Family: Multi9
  • Weight: 5.19 lb
  • Part Number: MG27156
  • Manufacturer: Schneider Electric
  • Series: Multi9 NC100H
  • Amperage: 20A
  • Voltage: 480Y/277VAC
  • Poles: 1P
  • Mounting Type: DIN Rail
  • Interrupt Rating: 10 kA
  • Endurance: 20,000 operation cycles
  • Impulse Voltage: 6000 V
  • Standards: UL 1077, IEC 60947-2
  • Application: Supplementary protection