Merit Brass A2K250R 250V RK1 Fuse 250 Amps

Product Description

The MERIT BRASS A2K250R is a 250-volt, RK1 class fuse rated at 250 amps, designed to provide reliable overcurrent protection in industrial and commercial electrical systems. RK1 fuses offer a high degree of current limitation, interrupting fault currents quickly to protect downstream equipment, conductors, and personnel. This fuse is installed by licensed electricians during panel builds, distribution upgrades, or equipment service calls where Class RK1 protection is specified.

This fuse is suited for use in motor branch circuits, feeder circuits, and service-entrance equipment operating at voltages up to 250 volts AC. Class RK1 fuses are commonly specified where tight current-limiting performance is required, including applications involving motors, transformers, and sensitive control equipment. The A2K250R fits standard Class RK fuse holders and fused disconnect switches rated for that ampacity and voltage class.

Key Features

• Class RK1 current-limiting design for fast fault interruption
• 250-volt AC voltage rating suitable for single-phase and three-phase distribution circuits
• 250-amp continuous current rating
• Fits standard Class RK fuse holders and disconnect switches
• Provides downstream equipment protection in motor and feeder circuit applications

Compatibility

Designed as an OEM-style replacement Class RK1 fuse for use in standard 250-volt rated fuse holders and fused disconnect switches requiring a 250-amp RK1 fuse.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NFPA 70 (National Electrical Code) requirements for overcurrent protection devices. Always de-energize and lock out the circuit at the upstream disconnect before removing or installing fuses. Verify the fuse holder or disconnect switch is rated for Class RK1 fuses at the appropriate voltage and ampacity before installation. Do not substitute a higher-ampacity or lower-class fuse in place of the specified RK1 rating.

Technical Specifications

• Voltage Rating: 250 volts
• Ampere Rating: 250 amps
• Fuse Class: RK1
• UPC: 78200191533

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A2K250R