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FRS1-1/2 - Class RK1 Fuse 1/2A 250VAC Time-Delay

United Fuses
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FRS1-1/2 is a 1/2-amp, 250-volt AC, 10kA interrupting capacity, time-delay, dual-element, Class RK1, 600-volt AC/DC rated, ferrule-type, current-limiting fuse designed for motor and transformer protection. It features a 5.19 lb weight, a 13/32-inch x 1-1/2-inch physical size, and a 200,000 amp RMS symmetrical interrupting rating at 600 volts AC, with a 300-volt DC rating. The fuse is constructed with a nickel-plated brass end cap and a melamine tube, offering a 200,000 AIC rating at 600 VAC and a 10,000 AIC rating at 125/250 VDC. It complies with UL 248-12, CSA C22.2 No. 248.12, and is CE marked, suitable for branch circuit protection in motor control centers, panelboards, and switchboards. Typical applications include protecting motor circuits, transformers, and general industrial loads against short circuits and sustained overloads.

Key Features & Specifications
  • Type: Class RK1, Time-Delay, Dual-Element, Current-Limiting, Ferrule Fuse
  • Voltage Rating: 250 VAC / 300 VDC
  • Current Rating: 1/2 A
  • Dimensions: 13/32" x 1-1/2"
  • Standards: UL 248-12, CSA C22.2 No. 248.12, CE
  • Applications: Motor circuit protection, transformer protection, branch circuit protection
  • Switch Type: N/A
  • Configuration: Dual-element, time-delay
  • Coil Voltage Maximum: N/A
  • Temp Rating: N/A
  • Shipping Dimensions: N/A
  • Phase: Single
  • Voltage: 250 VAC
  • Amperage: 0.5 A
  • AIC rating: 200,000 A RMS Sym. at 600 VAC; 10,000 A at 125/250 VDC
  • Connection: Ferrule
  • Poles: 1
  • Protection: Short-circuit and overload
  • Functions: Time-delay, current-limiting
  • Frame Size: 13/32" x 1-1/2"
  • Trip Type: Time-delay
  • Panel Type: N/A
  • Breaker Type: N/A
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: Nickel-plated brass
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: RK1
  • Insulation Temperature: N/A
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: RK1
  • Diameter: 13/32"
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: Ferrule clip
  • Hz: 50/60
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: N/A
  • Amperage Maximum: 0.5 A
  • Amperage Minimum: 0.5 A
  • Nema Rating: N/A
  • Switch Style: N/A
  • Wire Size: N/A
  • Certification: UL, CSA, CE
  • Circuit Breaker Mounting Style: N/A
  • Terminal Connection: Ferrule
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single
  • Standards: UL 248-12, CSA C22.2 No. 248.12
  • Compatible Frames: N/A
  • Installation Type: Clip mount
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: N/A
  • Current Rating: 0.5 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: N/A
  • Max Clamp Voltage: N/A
  • On-State Current: N/A
  • Weight: 5.19 lb


Product Identification
  • UPC: Not provided
  • GTIN: Not provided