Overview
The Gould Shawmut TRS90R is a dual-element, time-delay fuse designed for overcurrent protection in industrial and commercial electrical systems. This Tri-Onic fuse operates at 90 amperes and 600 volts, rated UL Class RK5 with a 200kA AIC interrupting rating at 600V. Mersen TRS-R Tri-Onic fuses are engineered for overcurrent protection of motors, transformers, service entrance equipment, feeders and branch-circuits, with time-delay characteristics that safely handle harmless starting currents and inrush currents.
Key Features
- Current-limiting, time-delay design with rejection-style ferrule terminals
- UL Class RK5 rated for motor circuits, mains, feeders, and transformers
- Dual-element construction, AC and DC rated for versatility in industrial applications
- Non-indicating design with rejection terminals to prevent replacement errors
- Supports both AC and DC voltage applications at rated capacity
Technical Specifications
The TRS90R delivers consistent performance across standard industrial duty cycles with the following verified specifications:
- Amperage: 90 Amp
- AC Voltage Rating: 600 Volt
- DC Voltage Rating: 600 VDC
- Interrupting Rating (AC): 200kA @ 600V
- Interrupting Rating (DC): 100,000 AIC
- UL Class: RK5
- Time Delay: Time Delay, Current Limiting
- Physical Dimensions: 7 7/8″ x 1 5/16″
- Terminal Type: Ferrule Terminal Type
Typical Applications
The TRS90R is ideal for motor circuits, mains, feeders, branch circuits, transformers, service entrance equipment, and general-purpose equipment. The time-delay characteristic allows the fuse to withstand brief overloads and motor inrush currents without nuisance interruption, making it a standard choice in HVAC systems, pump installations, compressors, and industrial control systems requiring reliable motor protection.
Compatibility & Replacements
Compatible With
- Standard cartridge-style fuse holders rated 600V Class RK5
- Motor control centers and disconnect switches
- Industrial motor starters and soft-start systems
- Transformer protection circuits
- Service entrance and feeder equipment
Replaces / Drop-In Replacement For
- Ferraz Mersen equivalent series: ECSR, FLSR, FRS-R
- Bussmann FRS-R-90 (equivalent cross-reference)
- Littelfuse FLSR-090ID (equivalent cross-reference)
Works With
- UL Listed and CSA Certified equipment meeting Class RK5 standards
- AC and DC voltage systems up to 600V
- Motor protection relay circuits
- Industrial electrical distribution systems
