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Cutler Hammer GRF329 - Molded Case Breaker 100A 600V AC

Cutler Hammer
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The Cutler Hammer GRF329 is a molded case circuit breaker designed for overcurrent and short-circuit protection in industrial power distribution systems. It is rated for 600V AC and 100A of continuous current, housed in a compact 6.13-inch deep, 4.56-inch high, and 2.06-inch wide frame weighing 1.46 lb. The unit features a thermal-magnetic trip mechanism with a 65kAIC at 240V AC, constructed with a glass-reinforced polyester insulation body and silver-alloy contacts. It complies with UL 489 and CSA C22.2 standards for branch circuit protection. Typical applications include motor control centers, panelboards, and switchboards in manufacturing and processing facilities.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, fixed thermal and magnetic settings
  • Voltage Rating: 600V AC
  • Current Rating: 100A
  • Dimensions: 6.13 in x 4.56 in x 2.06 in (Length/Depth x Height x Width)
  • Standards: UL 489, CSA C22.2
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Toggle handle
  • Configuration: 3-pole, 3-phase
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 6.13 in x 4.56 in x 2.06 in
  • Phase: 3
  • Voltage: 600V AC
  • Amperage: 100A
  • AIC rating: 65kA at 240V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Overload and short-circuit interruption
  • Frame Size: 329
  • Trip Type: Thermal-magnetic
  • Panel Type: Panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Silver-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: Bolt-on or plug-in
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 100A
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 100A
  • Enclosure: Open frame
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 100A
  • Amperage Minimum: 100A
  • Nema Rating: Not applicable
  • Switch Style: Toggle
  • Wire Size: #14 AWG to #2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-on or plug-in
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: 329 frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 329
  • 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: 782274126692
  • GTIN: 00782274000000