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Cutler Hammer 1261B100 - 100A 3-Pole Molded Case Breaker (600VAC)

Cutler Hammer
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Cutler Hammer 1261B100 is a heavy-duty industrial circuit breaker designed for overcurrent protection in electrical distribution systems. This unit is rated for 100 amps at 600 volts AC, providing reliable interruption of fault currents up to 65kA at 240VAC. The breaker features a compact molded case construction with a weight of 5.19 lb, utilizing a thermal-magnetic trip mechanism for precise overload and short-circuit protection. It complies with UL 489 and CSA C22.2 standards for safety and performance in commercial and industrial environments. Typical applications include main or branch circuit protection in panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 600 VAC
  • Current Rating: 100 A
  • Dimensions: Standard 3-pole breaker frame
  • Standards: UL 489, CSA C22.2
  • Applications: Main or branch circuit protection in panelboards, switchboards, motor control centers
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard breaker box
  • Phase: 3-phase
  • Voltage: 600 VAC
  • Amperage: 100 A
  • AIC rating: 65 kA at 240 VAC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overload and short-circuit
  • Functions: Overcurrent protection
  • Frame Size: 100 A frame
  • Trip Type: Thermal-magnetic
  • Panel Type: Distribution panel
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Steel and copper
  • Panel Style: Standard
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • 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: Not applicable
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not applicable
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 100 A
  • Amperage Minimum: Not applicable
  • Nema Rating: Not specified
  • Switch Style: Toggle
  • Wire Size: #14 to #2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: Cutler Hammer CH series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 100 A
  • Current Rating: 100 A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • 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: 78211382241
  • GTIN: 00782113822419