Mersen TRS4/10R - Fuse TRS-R - Class RK5 - Time-Delay 600VAC 600VDC 0.4A Ferrule Tri-Onic®
Mersen

TRS4/10R

Alternate Item Number: TRS4/10R

UPC: 782001748548


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Overview

The Mersen TRS4/10R is a Class RK5, time-delay, current-limiting fuse designed for robust overcurrent protection. Engineered by Mersen, this fuse (SKU: TRS4/10R) is rated for 600VAC and 600VDC, with a specific amperage of 0.4A. Its time-delay characteristic is crucial for safely managing the harmless starting currents of motors and the inrush currents associated with transformers, preventing nuisance openings. This fuse is ideal for protecting motor circuits, mains, feeders, branch circuits, transformers, and service entrance equipment. The Tri-Onic® TRS-R series features a rejection-style design when used with recommended fuse blocks, ensuring proper replacement and preventing errors. The fiberglass body offers dimensional stability in demanding industrial settings, while high-grade silica filler ensures rapid arc quenching and effective current limitation. With a high interrupting rating (IR) of 200kA AC and 20kA DC, the TRS4/10R provides reliable protection against short-circuit events. It is UL listed to standard 248-12 and CSA certified to standard C22.2 no. 248.12, confirming its adherence to stringent safety and performance benchmarks. This fuse is a dependable choice for general-purpose equipment protection where time-delay is a critical requirement.
  • Time-delay characteristic safely handles motor start-ups and transformer inrush currents.
  • Current-limiting design for low peak let-thru current.
  • Rated for 600VAC and 600VDC with a 0.4A rating.
  • Class RK5, UL listed to standard 248-12 and CSA certified.
  • Durable fiberglass body and high-grade silica filler for reliable performance.

Specifications

AC Voltage Rating
600 V
Amperage Rating
0.4 A
Application
Motor circuits Mains Feeders Branch circuits Transformers Service entrance equipment General-purpose equipment
Body Material
PolyTube
Brand Name
Mersen
Class
Class RK5
Connection
Ferrule
Connection Material
Copper
Connection Type
Ferrule
Current Rating
0.4A
Interrupt Rating
200 kA
Mounting
Clip
Series
Tri-Onic TRS-R
Size
5 x 0.81 in
Size
127 x 20.65 mm
Size
Ferrule
Size
5 x 0.81;127 x 20.65 in;mm
Special Features
Time-delay Current-limiting AC & DC rated Optional solid state SmartSpot blown fuse indicator Time-delay for motor start-ups and transformer inrush currents without nuisance opening Current-limiting for low peak let-thru current Rejection-style design prevents replacement errors (when used with recommended fuse blocks) Easy-to-read label for quick brand recognition and replacement Metal-embossed date and catalog number for traceability and lasting identification Fiberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching and high current limitation
Standard
UL listed to standard 248-12 File E2137 CSA certified to standard C22.2 no. 248.12 DC listed to UL standard 248 TRS only
Sub Brand
Tri-Onic®
Type
Class RK5
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
5 in x 0.81 in x 0.81 in
Package Dimensions (L x W x H)
127 mm x 20.65 mm x 20.65 mm
Package Weight (Imperial)
0.137 lb
Package Weight (Metric)
0.062 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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Frequently Asked Questions about Mersen

What industries and applications are Mersen products used for?

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.

What are the main product lines offered by Mersen?

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.

What are the key features of Mersen products?

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.

What environmental ratings do Mersen products have?

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.

What accessories are available for Mersen products?

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.

How are Mersen products typically installed?

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.

What certifications and standards do Mersen products comply with?

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.

What technical support does Mersen offer?

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.