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Eaton M22DX - Miniature Circuit Breaker 20A 2-Pole

Cutler Hammer
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Eaton Cutler Hammer M22DX is a 2-pole, 20-amp, 120/240-volt AC miniature circuit breaker designed for branch circuit protection and switching in residential and commercial load centers. It features a 10 kAIC interrupting rating at 120/240VAC, a thermal-magnetic trip mechanism, and a compact 1-inch per pole frame size for efficient panel space utilization. Constructed with a thermoplastic housing and copper alloy current-carrying components, this breaker weighs 0.05 lb and measures approximately 3.0 x 1.0 x 2.5 inches. It is UL 489 listed and CSA certified, meeting North American safety standards for overcurrent protection. Typical applications include lighting, receptacle, and general-purpose circuits in Eaton CH-series load centers and panelboards.

Key Features & Specifications
  • Type: Miniature Circuit Breaker, Thermal-Magnetic, Plug-On
  • Voltage Rating: 120/240 VAC
  • Current Rating: 20 Amperes
  • Dimensions: 3.0 x 1.0 x 2.5 inches
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Branch circuit protection in residential and commercial load centers
  • Switch Type: Toggle
  • Configuration: 1-Pole, 2-Pole (as M22DX indicates 2-pole)
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 3.5 x 1.5 x 3.0 inches
  • Phase: 1-Phase
  • Voltage: 120/240 VAC
  • Amperage: 20 A
  • AIC rating: 10 kAIC @ 120/240 VAC
  • Connection: Plug-On
  • Poles: 2
  • Protection: Overload and Short Circuit
  • Functions: Overcurrent Protection, Switching
  • Frame Size: CH
  • Trip Type: Thermal-Magnetic
  • Panel Type: Load Center
  • Breaker Type: Miniature Circuit Breaker
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: Copper Alloy
  • Panel Style: CH Series
  • Bus Type: Tin-Plated Copper
  • Fuse Class: N/A
  • Insulation Temperature: 105°C
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: 1.0 inch
  • Clas: N/A
  • Mounting: Plug-On
  • Hz: 50/60 Hz
  • Coil Material: N/A
  • Horse Power: 1 HP @ 120V, 2 HP @ 240V
  • Aux Contacts: No
  • CPT: No
  • Full Load Amps: 20 A
  • Dist Voltage: 120/240 VAC
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: 20 A
  • Full Load Amp Minimum: 20 A
  • Enclosure: Open
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: 14 AWG - 8 AWG
  • Amperage Maximum: 20 A
  • Amperage Minimum: 20 A
  • Nema Rating: N/A
  • Switch Style: Toggle
  • Wire Size: 14 AWG - 8 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Plug-On
  • Terminal Connection: Screw Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: CH Series
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: CH
  • Current Rating: 20 A
  • 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: 78668527590
  • GTIN: 00786685275901