Product Description

The Ferraz Shawmut TRS50R is a 50‑amp, Class RK5, Tri‑Onic® time‑delay fuse engineered for reliable protection of motors, transformers, feeders, and branch circuits. This fuse provides current‑limiting performance to reduce fault energy and protect downstream equipment, while its time‑delay element supports high inrush loads such as motor startups and transformer energizing without nuisance tripping.

According to multiple listings, the TRS50R is rated for 50A, 600V AC, and 300V DCsec2sec10sec15. It features dual‑element time‑delay constructionsec2sec10, current‑limiting capabilitysec10, and a 5.5-inch length with 1.06-inch diametersec10sec15.

This fuse is part of the Tri‑Onic TRS‑R series, designed specifically for industrial motor circuits and general-purpose overcurrent protectionsec14sec21.

⭐ Key Features & Benefits

• 50A, 600VAC / 300VDC rating for industrial circuitssec10sec15

• Tri‑Onic® dual‑element time‑delay handles motor and transformer inrush currentssec10sec18

• Current‑limiting design reduces peak let‑through energysec10

• Class RK5 fuse compatible with standard RK5 fuse blockssec2

• 5.5" length × 1.06" diameter standard cartridge sizesec10sec15

• Engineered for motors, transformers, feeders, and branch circuitssec14[sec21](#sentenceindex-sec21]

🔧 Uses / Applications

• Motor circuit protection (high inrush loads)

• Transformer protection

• Feeder and branch‑circuit protection

• Service entrance equipment

• Industrial control panels

• HVAC, pumps, and manufacturing equipment

📊 Technical Specifications

🔄 Cross‑Reference / Interchange Table