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Square D EZMR114125 - 125A 3-Pole Molded Case Breaker 480V AC

Square D
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Square D EZMR114125 is a molded case circuit breaker designed for primary overcurrent and short-circuit protection in electrical distribution systems. It is rated for 480V AC and carries a current rating of 125A, providing reliable interruption of fault currents. The unit measures 48.12 inches in height, 12.25 inches in width, and 7.09 inches in depth, weighing 64.4 lb, with a robust construction suitable for industrial environments. This breaker complies with UL 489 and NEMA standards, ensuring safe operation in commercial and industrial power panels. Typical applications include branch circuit protection in switchboards, panelboards, and motor control centers.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 480V AC
  • Current Rating: 125A
  • Dimensions: 48.12 in (1222.25 mm) x 12.25 in (311.15 mm) x 7.09 in (180.09 mm) (Height x Width x Depth)
  • Standards: UL 489, NEMA AB-1
  • Applications: Branch circuit protection in switchboards, panelboards, motor control centers
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 48.12 in x 12.25 in x 7.09 in
  • Phase: 3-phase
  • Voltage: 480V AC
  • Amperage: 125A
  • AIC rating: 25 kA at 480V AC
  • Connection: Line and load side lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Thermal-magnetic trip
  • Frame Size: EZMR
  • Trip Type: Fixed thermal-magnetic
  • Panel Type: NEMA 1
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Steel enclosure
  • Panel Style: NEMA 1
  • Bus Type: Copper
  • Fuse Class: Not applicable
  • Insulation Temperature: 75°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: 60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 125A
  • Dist Voltage: 480V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 125A
  • Full Load Amp Minimum: 125A
  • Enclosure: NEMA 1
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 125A
  • Amperage Minimum: 125A
  • Nema Rating: NEMA 1
  • Switch Style: Toggle
  • Wire Size: #14 AWG to #1/0 AWG
  • Certification: UL listed
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Lug
  • Frequency Rating: 60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, NEMA AB-1
  • Compatible Frames: EZMR series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: EZMR
  • Current Rating: 125A
  • 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: 78590140218
  • GTIN: 00785901402183