Overview
This lot of four Gould Shawmut TRS35R Class RK5 time-delay cartridge fuses is engineered for critical overcurrent protection in industrial and commercial electrical systems. The TRS35R is specifically designed for motor starting circuits and transformer inrush protection, where temporary overcurrent spikes must be safely tolerated without nuisance trips. With a 35-ampere rating at 600VAC and a 200kA interrupting capacity, the Gould Shawmut TRS35R provides robust, current-limiting protection for high-fault applications.
Key Features
- Class RK5 current-limiting design — Limits let-through current and reduces arc energy during fault conditions
- Dual-element time-delay construction — Tolerates harmless motor starting and transformer inrush currents without nuisance openings
- Rejection-style ferrule terminals — Prevents accidental installation of incorrect ampere ratings in compatible fuse holders
- 200kA @ 600VAC interrupting rating — Rated for high-fault industrial distribution systems
- AC/DC rated — Functional at 300VDC for versatile circuit applications
- UL & CSA certified — Meets UL 248-12 and CSA C22.2 No. 248.4 standards for safety and reliability
Technical Specifications
- Voltage Rating: 600VAC, 300VDC
- Current Rating: 35 Amperes
- Class: RK5 (current-limiting, time-delay)
- Interrupting Rating (IR): 200,000 AIC @ 600VAC; 20,000 AIC @ 300VDC
- Fuse Type: Dual-element cartridge with ferrule terminals
- Physical Dimensions: 1-1/16 inch diameter × 5-1/2 inch length
- Terminal Style: Rejection ferrule (prevents mismatched installation)
- Certifications: UL 248-12 File E2137; CSA C22.2 No. 248.4
- Quantity: 4 units per lot
Typical Applications
The TRS35R is the standard choice for industrial applications requiring time-delay overcurrent protection:
- Motor circuits — Primary protection for AC induction motors with high starting currents
- Transformer protection — Safeguards power and control transformers from sustained faults
- Mains and feeders — Distribution-level branch circuit and main circuit protection
- Service entrance equipment — Protects main distribution panels in commercial and industrial facilities
- Industrial control panels — Reliable backup protection in motor control centers and variable frequency drive circuits
Compatibility & Replacements
Compatible With
- Cartridge fuse holders rated for Class RK5 cartridge fuses
- Motor control centers (MCCs) with standard rejection-style fuse blocks
- Enclosed disconnect switches and distribution panels designed for Class RK5 cartridge fuses
- Industrial power distribution systems rated 600VAC, 35A minimum
Replaces / Drop-In Replacement For
- Gould Shawmut TRS35 (earlier designation)
- Ferraz Shawmut TRS35R (current manufacturer under Mersen ownership)
- Mersen TRS35R (current supplier)
- Any Class RK5 cartridge fuse slot rated for 35A, 600VAC
Works With
- Fuse standards: UL 248-12, CSA C22.2 No. 248.4
- Compatible fuse block manufacturers: Eaton, Littelfuse, Bussmann, Siemens, ABB, Schneider Electric
- Substitute models available: Bussmann FRS-R-35, Littelfuse FLSR-035 (verify holder compatibility before substituting)
