Merit Brass A4J15 Class J Fuse 600V 15A 10 Pack

Product Description

The MERIT BRASS A4J15 is a Class J current-limiting fuse rated at 600 volts and 15 amps, sold in a 10-pack. Class J fuses are designed to provide a high degree of current-limiting protection in circuits where fault currents can reach damaging levels. The compact, rejection-style body prevents substitution with lower-rated fuse classes, maintaining the integrity of the overcurrent protection system. Electricians and electrical contractors install these fuses in fusible disconnects, motor control centers, and branch-circuit panelboards that require Class J-rated overcurrent protection.

Class J fuses at this ampere rating are commonly used in residential, commercial, and light industrial electrical systems. Typical applications include motor branch circuits, feeder circuits, and service-entrance equipment where a 600-volt, 15-amp Class J fuse is specified by design or code. The 10-pack format suits service vans and panel shops that stock fuses for routine replacement and maintenance work.

Key Features

• 600-volt voltage rating suitable for standard commercial and industrial circuits
• 15-amp current rating for branch and feeder circuit protection
• Class J rejection body prevents cross-installation with lower-rated fuse classes
• Current-limiting design reduces let-through energy during fault events
• Sold in a 10-pack for stocking and field replacement efficiency

Compatibility

Designed as an OEM-style replacement for Class J fusible disconnect switches and motor control equipment requiring a 600-volt, 15-amp Class J fuse.

Installation Notes

Class J fuses are installed by licensed electricians in accordance with the National Electrical Code (NEC). De-energize and lock out the circuit at the disconnect or panel before replacing any fuse. Use an insulated fuse puller rated for the voltage and current of the circuit. Verify the replacement fuse matches the voltage rating, ampere rating, and fuse class specified on the equipment nameplate before re-energizing.

Technical Specifications

• Voltage Rating: 600 volts
• Ampere Rating: 15 amps
• Fuse Class: Class J
• Quantity per Pack: 10
• Length: 4.25 inches
• Width: 2.38 inches
• Height: 1.69 inches
• Weight: 0.12 pounds
• UPC: 78200196015

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A4J15