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Eaton Cutler Hammer TMR5F22120 - 1-Pole 20A 120/240V AC Breaker

Cutler Hammer
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Eaton Cutler Hammer TMR5F22120 is a thermal-magnetic molded case circuit breaker designed for branch circuit protection and equipment disconnect in industrial power distribution systems. It is rated for 120/240V AC operation with a current rating of 20A and a 10kA interrupting capacity at 240V AC. The unit features a compact 3.5-inch depth, 2.4-inch height, and 1.7-inch width, weighing 0.75 lb, with a thermoplastic housing and a toggle switch actuator for manual on/off control. This breaker complies with UL 489 and CSA C22.2 standards for safety and performance in North American installations. It is commonly used in panelboards, switchboards, and motor control centers for overload and short-circuit protection in commercial and light industrial environments.

Key Features & Specifications
  • Type: Thermal-magnetic molded case circuit breaker, thermoplastic housing, toggle switch operation
  • Voltage Rating: 120/240V AC
  • Current Rating: 20A
  • Dimensions: 3.5 in x 2.4 in x 1.7 in (Length/Depth x Height x Width)
  • Standards: UL 489, CSA C22.2
  • Applications: Branch circuit protection, equipment disconnect, panelboards, switchboards, motor control centers
  • Switch Type: Toggle
  • Configuration: 1-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 3.5 in x 2.4 in x 1.7 in
  • Phase: 1-phase
  • Voltage: 120/240V AC
  • Amperage: 20A
  • AIC rating: 10kA at 240V AC
  • Connection: Line and load lugs
  • Poles: 1
  • Protection: Overload and short-circuit
  • Functions: Overcurrent protection, manual disconnect
  • Frame Size: TMR5
  • Trip Type: Thermal-magnetic
  • Panel Type: Not specified
  • 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: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: 75°C rated
  • 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: 20A
  • Dist Voltage: 120/240V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 20A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 20A
  • Amperage Minimum: 0A
  • Nema Rating: Not specified
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 8 AWG
  • Certification: UL 489, CSA C22.2
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Screw-type lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: TMR5 series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: TMR5
  • Current Rating: 20A
  • 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: 78668512395
  • GTIN: 00786685123950