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Cutler Hammer 3MTB1200BLK - Molded Case Circuit Breaker 1200A 600V

Cutler Hammer
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Cutler Hammer 3MTB1200BLK is a molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 1200 amps at 600 volts AC, providing robust fault interruption capabilities. The unit measures 18 inches in length, 5 inches in height, and 6 inches in width, weighing 3 lb, with a compact black molded case construction. It complies with UL 489 and NEMA AB-1 standards for safety and performance. This breaker is typically applied in switchboards, panelboards, and motor control centers for branch circuit or main feeder protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600 V AC
  • Current Rating: 1200 A
  • Dimensions: 18 in x 5 in x 6 in (Length/Depth x Height x Width)
  • Weight: 3 lb
  • Standards: UL 489, NEMA AB-1
  • Applications: Industrial power distribution, switchboards, panelboards, motor control centers
  • Breaker Type: Molded Case
  • Frame Size: 1200 A
  • Poles: 3
  • Connection: Line and load lugs
  • Mounting: Fixed
  • Phase: 3
  • Hz: 50/60
  • Amperage: 1200 A
  • AIC Rating: 65 kAIC at 240 V AC
  • Protection: Thermal-magnetic trip
  • Trip Type: Fixed thermal, fixed magnetic
  • Enclosure: Open style
  • Terminal Connection: Copper or aluminum lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, NEMA AB-1
  • Installation Type: Fixed mount
  • Item QTY: 1
  • Breaker Frame: 1200 A frame
  • Current Rating: 1200 A
  • Operating Temperature Maximum Celsius: 40 °C
  • Manufacturer: Eaton


Product Identification
  • UPC: 78211600791
  • GTIN: 00782116007912