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KTN-R-225R - RK1 Fuse 225A 250VAC Time-Delay

United Fuses
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KTN-R-225R is a 225-amp RK1 dual-element, time-delay fuse designed for overload and short-circuit protection of motors and other inductive loads. It operates at a maximum voltage of 250 VAC/125 VDC, with a 200,000 AIC interrupting rating, and features a rejection-style ferrule construction for secure mounting. The fuse weighs 5.19 lb and is built with a Class RK1 metal body, ensuring robust performance in high-fault environments. It complies with UL 248-12 and CSA standards, making it suitable for industrial applications such as motor control centers, feeder circuits, and switchgear. Typical uses include protecting branch circuits, transformers, and general-purpose power distribution systems.

Key Features & Specifications
  • Type: RK1 Dual-Element, Time-Delay, Ferrule
  • Voltage Rating: 250 VAC / 125 VDC
  • Current Rating: 225 A
  • Dimensions: Not specified
  • Standards: UL 248-12, CSA
  • Applications: Motor protection, feeder circuits, switchgear, branch circuits
  • Switch Type: Not specified
  • Configuration: Rejection-style
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: Not specified
  • Voltage: 250 VAC
  • Amperage: 225 A
  • AIC rating: 200,000 A
  • Connection: Ferrule
  • Poles: Not specified
  • Protection: Overload and short-circuit
  • Functions: Time-delay
  • Frame Size: Not specified
  • Trip Type: Dual-element
  • Panel Type: Not specified
  • Breaker Type: Not specified
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: RK1
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Not specified
  • Hz: Not specified
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 225 A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Not specified
  • Terminal Connection: Ferrule
  • Frequency Rating: Not specified
  • Phase Connection: Not specified
  • Standards: UL 248-12, CSA
  • Compatible Frames: Not specified
  • Installation Type: Not specified
  • Item QTY: Not specified
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • Current Rating: 225 A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified
  • Weight: 5.19 lb


Product Identification
  • UPC: Not specified
  • GTIN: Not specified