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Square D MHL3612001212 - Molded Case Breaker 1200A 600V 3-Pole

Square D
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Square D MHL3612001212 is a three-pole molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 1200A continuous current at 600VAC with a 65kA interrupting capacity at 480VAC, utilizing thermal magnetic protection with LI (Long-Time and Instantaneous) trip functions. The unit features a feed-thru connection, measures 8.05 inches deep by 8.27 inches wide by 12.86 inches tall, and weighs 40 lb. This MHL Series breaker is built for three-phase applications and complies with applicable industry standards for molded case circuit breakers. It is typically used in switchboards, panelboards, and other heavy-duty electrical distribution equipment requiring high current protection.

Key Features & Specifications
  • Type: MHL Series Molded Case Circuit Breaker, thermal magnetic protection
  • Voltage Rating: 600VAC
  • Current Rating: 1200A
  • Dimensions: Depth 8.05 in (204.47 mm) Width 8.27 in (210.06 mm) Height 12.86 in (326.64 mm)
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Industrial power distribution, switchboards, panelboards
  • Switch Type: Molded case
  • Configuration: Fixed mount
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 8.05 x 8.27 x 12.86 in
  • Phase: 3
  • Voltage: 600VAC
  • Amperage: 1200A
  • AIC rating: 65kA@480V
  • Connection: Feed-Thru
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: MHL
  • Trip Type: Thermal magnetic
  • Panel Type: N/A
  • Breaker Type: Molded case
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: N/A
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: N/A
  • Insulation Temperature: N/A
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: Fixed
  • Hz: 50/60
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: N/A
  • Amperage Maximum: 1200A
  • Amperage Minimum: N/A
  • Nema Rating: N/A
  • Switch Style: N/A
  • Wire Size: N/A
  • Certification: UL 489, CSA
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Feed-Thru
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: MHL
  • Installation Type: Panelboard/Switchboard
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: MHL
  • Current Rating: 1200A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 785901891237
  • GTIN: 00785901891237