Mersen TRS150R Fuse TRS-R - Class RK5 - Time-Delay 600VAC 600VDC 150A Blade Tri-Onic®

TR-R fuses are rated for 250VAC and 250VDC (for .1-2.8A and 35-400A) or 160VDC (for 3-30A and 450-600A). Amperage ranges from 1/10 to 600A.

TRS-R fuses are rated for 600VAC and 600VDC (for .1-12A and 70-600A) or 300VDC (for 15-60A). Amperage ranges from 1/10 to 600A.

TR-R fuses have an IR of 200kA I.R. AC and 20kA I.R. DC. TRS-R fuses have an IR of 200kA I.R. AC, with DC ratings varying by amperage.

These fuses are engineered for overcurrent protection of motor circuits, transformers, service entrance equipment, feeder and branch circuits, and general-purpose equipment.

The time-delay characteristic safely handles harmless starting currents and inrush currents associated with motors and transformers without nuisance opening.

The current-limiting feature provides low peak let-thru current, offering protection against overcurrents.

SmartSpot is an optional solid-state blown fuse indicator that provides visual indication when the fuse has blown.

The fuse body is made of fiberglass, which provides dimensional stability in harsh industrial settings.

High-grade silica filler is used to ensure fast arc quenching and high current limitation.

Yes, they are UL listed to standard 248-12 and CSA certified to standard C22.2 no. 248.12. TRS fuses are also DC listed to UL standard 248.

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.