Merit Brass A2K1R 250V RK1 Fuse 10 Pack

Product Description

The MERIT BRASS A2K1R is a 250-volt, Class RK1 time-delay fuse used in electrical overcurrent protection applications. Class RK1 fuses provide a higher level of current-limiting performance compared to standard Class K fuses, making them a reliable choice for protecting motors, transformers, and branch circuits from short-circuit and overload conditions. This fuse is sold in a 10-unit pack and weighs 0.530 pounds total. Licensed electricians and maintenance technicians typically specify Class RK1 fuses where tighter current-limiting ratings are required by design or code.

Class RK1 fuses are commonly installed in commercial and industrial electrical panels, motor control centers, and disconnect switches. The 250-volt rating suits single-phase and three-phase branch circuits operating at or below that voltage level. This pack of 10 is well-suited for service shops, facilities maintenance teams, or electrical contractors who stock fuses for routine replacements and planned maintenance work.

Key Features

• Class RK1 rating delivers superior current-limiting protection compared to Class K fuses
• 250-volt rating covers a wide range of residential and commercial branch circuit applications
• Time-delay design helps prevent nuisance tripping on motor startup inrush currents
• Sold in a convenient 10-unit pack for stocking and service use
• Compact dimensions of 3.000 inches x 2.060 inches x 1.190 inches per unit

Compatibility

Designed as an OEM-style replacement for Class RK1 fuse holders and fusible disconnects rated for 250 volts AC service.

Installation Notes

Installation should be performed by a qualified electrician in accordance with applicable NEC requirements for overcurrent protection devices. Always de-energize and lock out the circuit before removing or installing fuses. Verify that the fuse holder is rated for Class RK1 fuses before installation, as RK1 fuses are not interchangeable with Class RK5 or other fuse classes in all holders. Use appropriately rated fuse pullers when servicing energized-adjacent equipment to avoid arc flash exposure.

Technical Specifications

• Voltage Rating: 250 volts
• Fuse Class: RK1
• Quantity per Pack: 10
• Package Dimensions: 3.000 inches x 2.060 inches x 1.190 inches
• Package Weight: 0.530 pounds
• UPC: 78200191500

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A2K1R