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ACP Electrical Fittings MIGB400L10AC - Molded Case Breaker 400A 600V AC

ACP Electrical Fittings
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ACP Electrical Fittings MIGB400L10AC is a molded case circuit breaker designed for primary overcurrent and short-circuit protection in industrial power distribution systems. It is rated for 600V AC and 400A continuous current, with a 10kAIC interrupting capacity at 480V AC, and features a three-pole, thermal-magnetic trip configuration for reliable overload and fault isolation. The unit weighs 5.19 lb and is constructed with a compact frame for panelboard or switchboard mounting, utilizing line and load side lug connections. It complies with UL 489 and NEMA AB-1 standards for safety and performance in commercial and industrial environments. Typical applications include feeder protection, motor control centers, and main disconnect service in manufacturing plants and heavy machinery installations.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, thermal-magnetic trip, three-pole
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • AIC Rating: 10kAIC at 480V AC
  • Dimensions: Compact frame size
  • Standards: UL 489, NEMA AB-1
  • Applications: Feeder protection, motor control centers, main disconnect
  • Switch Type: Thermal-magnetic
  • Configuration: Three-pole
  • Connection: Line and load side lugs
  • Poles: 3
  • Protection: Overcurrent, short-circuit
  • Trip Type: Thermal-magnetic
  • Panel Type: Panelboard/Switchboard
  • Breaker Type: Molded Case
  • Mounting: Panelboard/Switchboard
  • Phase: 3
  • Hz: 50/60
  • Wire Size: Lug range
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Installation Type: Fixed
  • Item QTY: 1
  • Breaker Frame: MIGB
  • Current Rating: 400A
  • Operating Temperature Maximum Celsius: 40°C
  • Weight: 5.19 lb


Product Identification
  • Manufacturer: ACP Electrical Fittings
  • Model: MIGB400L10AC