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The TRADEPRO tp-20a250vrk-5 is a Class RK5 time delay fuse rated at 20 amps and 250 VAC (150 VDC). It is designed for use in service entrance switches and provides overcurrent protection for electrical systems in commercial and residential applications. The time delay design allows brief inrush currents to pass without nuisance tripping, while still responding quickly to sustained overloads, ground faults, and short circuits. Licensed electricians install this fuse as part of panel and disconnect service work.
This fuse is suited for service entrance equipment, motor branch circuits, and feeder circuits where Class RK5 fusible protection is specified. Its time delay characteristic makes it appropriate for motor loads, where locked-rotor inrush current would otherwise trip a fast-acting fuse during startup. It is sold individually and fits standard RK5 fuse holders and disconnect blocks rated for 250 VAC service.
Designed as an OEM-style replacement for Class RK5 time delay fuses in standard 250 VAC service entrance switches, disconnect switches, and fused motor starters requiring a 20-amp RK5-class fuse.
Installation should be performed by a licensed electrician in accordance with NFPA 70 (NEC) requirements for overcurrent protection and service equipment. Always de-energize and lock out the circuit before replacing a fuse. Verify the fuse holder and disconnect block are rated for Class RK5 fuses and match the circuit voltage and amperage requirements. Do not substitute a higher-amperage or different-class fuse.
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