Merit Brass TRS4R 4A 600V RK5 Time-delay Fuse 10 Pack

Product Description

The MERIT BRASS TRS4R is a Class RK5 time-delay fuse rated at 4 amps and 600 volts, sold in a 10-pack. Time-delay fuses in the RK5 class are designed to withstand short-duration inrush currents common in motor and transformer circuits without nuisance tripping, while still opening quickly on sustained overloads or short-circuit faults. This fuse suits commercial and industrial electrical panels, HVAC equipment, and control circuits where reliable overcurrent protection is required. Licensed electricians and HVAC technicians are the primary installers.

The TRS4R is suited for use in motor branch circuits, HVAC compressor and blower circuits, control panels, and general-purpose distribution equipment operating at up to 600 volts AC. The RK5 current-limiting rating makes it appropriate for systems where downstream equipment requires a degree of short-circuit current limitation. Sold in a 10-count pack, it is a practical stock item for service vans and panel shops handling recurring fuse replacement work.

Key Features

• 4-amp rating with time-delay action accommodates motor inrush without nuisance tripping
• 600-volt AC rating covers standard commercial and industrial distribution voltages
• Class RK5 current-limiting design provides downstream component protection
• 10-pack quantity supports bulk stocking for service or panel work
• Compact form factor fits standard RK5-class fuseholders

Compatibility

Designed as an OEM-style replacement for Class RK5 fuseholders in residential, commercial, and light industrial electrical and HVAC applications rated up to 600 volts.

Installation Notes

Installation must be performed by a qualified electrician or licensed HVAC technician in accordance with NFPA 70 (NEC) requirements for overcurrent protection. Always de-energize and lock out the circuit at the disconnect before replacing any fuse. Verify the fuseholder is rated for Class RK5 cartridge fuses before installing. Never substitute a fuse with a higher ampere rating than the circuit or equipment requires.

Technical Specifications

• Ampere Rating: 4 amps
• Voltage Rating: 600 volts
• Fuse Class: RK5 Time-Delay
• Quantity per Pack: 10
• Package Dimensions (L x W x H): 5.12 inches x 4.12 inches x 1.75 inches
• Package Weight: 2.1 pounds
• UPC: 78200174871

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: TRS4R