Merit Brass TRS3R 3A 600V RK5 Time-delay Fuse 10-pack

Product Description

The MERIT BRASS TRS3R is a 3-amp, 600-volt Class RK5 time-delay fuse designed for overcurrent protection in industrial and commercial electrical systems. Time-delay fuses of this class tolerate brief inrush currents from motor loads and transformers while still opening quickly under sustained fault conditions. The RK5 designation indicates a rejection-style form factor that prevents substitution with lower-rated fuse classes, adding an important layer of system safety. Each pack contains 10 fuses, making this a practical stocking unit for electrical contractors and service technicians who regularly service panel boards, motor control centers, and disconnect switches.

This fuse is suited for residential and light commercial applications where 600-volt-rated overcurrent protection is required. Typical installation scenarios include branch circuit protection, motor branch circuits requiring time-delay characteristics, and control panel fusing. The 10-per-pack quantity is well matched to service inventory, truck stock, or shop supply use by licensed electricians and electrical contractors.

Key Features

• 3-amp rating handles low-current branch circuit and control circuit protection
• 600-volt rating covers the full range of standard single-phase and three-phase distribution voltages
• Class RK5 rejection form factor prevents cross-installation of non-RK5 fuses
• Time-delay design tolerates motor and transformer inrush without nuisance opening
• 10-pack quantity supports truck stock and panel shop inventory

Compatibility

Designed as an OEM-style replacement for Class RK5 time-delay fuse holders and fused disconnects rated at 600 volts or less requiring a 3-amp overcurrent element.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit at the upstream disconnect or panel before removing or installing fuses. Verify that the fuse holder or disconnect is rated for Class RK5 fuses before installation. Do not install this fuse in a non-rejection holder or substitute it for a different ampere or voltage class.

Technical Specifications

• Amperage: 3 amps
• Voltage Rating: 600 volts
• Fuse Class: RK5
• Fuse Type: Time-Delay
• Pack Quantity: 10 per pack
• Package Dimensions (L x W x H): 5.12 inches x 4.12 inches x 1.75 inches
• Package Weight: 2.1 pounds
• UPC: 78200174868

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: TRS3R