Merit Brass TRS1-1/8R Time-delay Fuse 1-1/8A 600V

Product Description

The MERIT BRASS TRS1-1/8R is a Class RK5 time-delay fuse rated at 1-1/8 amps and 600 volts. Time-delay fuses in this class are designed to withstand brief inrush currents common in motor and transformer circuits without nuisance tripping, while still providing reliable overcurrent protection for the downstream equipment. The RK5 classification indicates a rejection-style fuse body that prevents installation in non-rejection fuse holders, reducing the risk of substituting an incorrect fuse type. Licensed electricians and industrial maintenance technicians install this type of fuse in panelboards, motor control centers, and disconnect switches.

This fuse is suited for residential, commercial, and light industrial electrical systems where precise overcurrent protection is required. RK5 time-delay fuses at this amperage are commonly found protecting small motors, control circuits, and sensitive equipment loads. The 600-volt rating covers a wide range of single-phase and three-phase applications in standard North American electrical distribution systems.

Key Features

• Class RK5 rejection-style fuse body prevents substitution with lower-rated fuse classes
• Time-delay design tolerates motor inrush and transformer magnetizing currents without nuisance opening
• 600-volt rating suitable for a broad range of single-phase and three-phase circuits
• 1-1/8-amp rating provides precise protection for low-current motor and control loads
• Compact form factor fits standard RK5-rejection fuse holders and disconnect switches

Compatibility

Designed as an OEM-style replacement for Class RK5 time-delay fuses in standard RK5-rejection fuse holders rated for 600 volts or less.

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 panelboard before removing or installing any fuse. Verify the replacement fuse ampere rating, voltage rating, and class marking match the original fuse and the requirements of the equipment being protected. Never bypass or substitute a fuse with a higher ampere rating than specified by the equipment manufacturer.

Technical Specifications

• Ampere Rating: 1-1/8 amps
• Voltage Rating: 600 volts
• Fuse Class: RK5
• Fuse Type: Time-Delay
• UPC: 78200174859

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: TRS1-1/8R