Cutler Hammer C321MP9 - 100A 3-Pole Molded Case Breaker
Cutler Hammer C321MP9 - 100A 3-Pole Molded Case Breaker

Cutler Hammer C321MP9 - 100A 3-Pole Molded Case Breaker

Cutler Hammer
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Cutler Hammer C321MP9 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 maximum and carries a current rating of 100A, with a compact 1-inch depth, height, and width footprint and a weight of 0.1 lb. The unit features a thermal-magnetic trip mechanism for reliable overload and fault interruption, housed in a durable thermoplastic enclosure. It complies with UL 489 and CSA C22.2 standards for safety and performance. Typical applications include motor control centers, panelboards, and switchboards in manufacturing and commercial facilities.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, thermoplastic enclosure
  • Voltage Rating: 600V AC
  • Current Rating: 100A
  • Dimensions: 1 in x 1 in x 1 in (Length/Depth x Height x Width)
  • Weight: 0.1 lb
  • Standards: UL 489, CSA C22.2
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 1 in x 1 in x 1 in
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 100A
  • AIC rating: 10kA at 600V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Overload and fault interruption
  • Frame Size: 100A frame
  • Trip Type: Thermal-magnetic
  • Panel Type: Industrial panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Copper alloy contacts
  • Panel Style: Flush or surface mount
  • Bus Type: Stab or bolt-on
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 100A
  • Dist Voltage: 600V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open type
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 100A
  • Amperage Minimum: 0A
  • Nema Rating: 1 (indoor)
  • Switch Style: Toggle
  • Wire Size: #14 AWG to #2 AWG
  • Certification: UL listed, CSA certified
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Screw-type lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: 100A frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 100A
  • Current Rating: 100A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 78211362181
  • GTIN: 00782113621814