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ECN125 - Class RK5 Fuse 125V 125A (Time-Delay)

United Fuses
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The ECN125 is a high-capacity industrial fuse designed for primary overcurrent protection in electrical distribution systems. It operates at 125 volts AC/DC with a current rating of 125 amps, ensuring robust fault interruption for heavy-duty circuits. This compact unit weighs 5.19 lb and features a durable construction with a 1-inch diameter and a clip center mounting style for secure installation. It complies with UL and CSA standards, making it suitable for use in panel boards, switchboards, and motor control centers. Typical applications include protecting feeders, branch circuits, and transformers in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: Industrial fuse, Class RK5, dual-element, time-delay
  • Voltage Rating: 125 V AC/DC
  • Current Rating: 125 A
  • Dimensions: 1-inch diameter, 5.19 lb weight
  • Standards: UL 248-12, CSA C22.2 No. 248.12
  • Applications: Feeder and branch circuit protection, motor control centers, panel boards
  • Switch Type: Not applicable
  • Configuration: Single element
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: 90°C maximum ambient
  • Shipping Dimensions: 6 x 6 x 6 inches
  • Phase: Single-phase
  • Voltage: 125 V
  • Amperage: 125 A
  • AIC rating: 200 kA RMS Sym.
  • Connection: Ferrule end
  • Poles: 1
  • Protection: Overcurrent
  • Functions: Time-delay
  • Frame Size: Not applicable
  • Trip Type: Not applicable
  • Panel Type: Not applicable
  • Breaker Type: Not applicable
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Copper alloy
  • Panel Style: Not applicable
  • Bus Type: Not applicable
  • Fuse Class: RK5
  • Insulation Temperature: 90°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: RK5
  • Diameter: 1 inch
  • Velocity: Not applicable
  • Clip Center: 2 inches
  • Clas: Not applicable
  • Mounting: Clip
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not applicable
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: 125 A
  • Dist Voltage: 125 V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 125 A
  • Full Load Amp Minimum: 125 A
  • Enclosure: Not applicable
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not applicable
  • Amperage Maximum: 125 A
  • Amperage Minimum: 125 A
  • Nema Rating: Not applicable
  • Switch Style: Not applicable
  • Wire Size: Not applicable
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Ferrule
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 248-12, CSA C22.2 No. 248.12
  • Compatible Frames: Not applicable
  • Installation Type: Clip mount
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 125 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: 90°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not available
  • GTIN: Not available