Mersen OTS5 Fuse OTS - Class K5 - Fast-Acting 600VAC 300VDC 5A Ferrule Amp-Trap®
Alternate Item Number: OTS5
UPC: 782001700645
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Overview
- Rated 5A with 600VAC/300VDC operation for versatile use
- Fast-acting Class K-5 fuse for non-motor loads (lighting/heating)
- Ferrule connection type for secure, low-resistance installation
- Interrupting rating: 50kA AC / 20kA DC for high short-circuit protection
- UL Listed (Standard 248-9) and CSA Certified for compliance
Specifications
AC Voltage Rating | 600 V |
Amperage Rating | 5 A |
Application | Feeders Branch circuits Resistive heating Residential and small commercial installations |
Body Material | Paper |
Brand Name | Mersen |
Class | Class K5 |
Connection | Ferrule |
Connection Material | Copper |
DC Voltage Rating | 300 V |
Interrupt Rating | 50 kA |
Mounting | Clip |
Size | 5 x 0.81 in |
Size | 127 x 20.625 mm |
Special Features | Easy to read imprint label for quick recognition and replacement Low cost for high protection value |
Standard | UL Listed to Standard 248-9 File E2137 CSA Certified to Standard C22.2 No. 248.9 (The Canadian Electrical Code requires these fuses in ratings 15 through 60A to be of the low melting point design use OTN 15-60.) Self-certified for DC per UL248 |
Sub Brand | Amp-Trap® |
Type | Class K5 |
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 20.625 mm x 20.625 mm |
Package Weight (Imperial) | 0.110 lb |
Package Weight (Metric) | 0.050 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.
Frequently Asked Questions
What is the interrupting rating for OT, OTN, and OTS fuses?
These fuses can safely interrupt available short circuit currents up to 50,000 amperes AC and 20,000 amperes DC.
What types of circuits are OT, OTN, and OTS fuses designed for?
They are general purpose fuses intended for feeder and branch circuits serving lighting, heating, and other non-motor loads.
What are the voltage and amp ratings for OT fuses?
OT fuses are rated for 250VAC / DC and come in amp ratings from 1 to 600A.
What are the voltage and amp ratings for OTN fuses?
OTN fuses are rated for 250VAC and are available in amp ratings from 15 to 60A.
What are the voltage and amp ratings for OTS fuses?
OTS fuses are rated for 600VAC / 300VDC and are available in amp ratings from 1 to 600A.
Are OT, OTN, and OTS fuses rejection fuses?
No, they are not rejection fuses. Care must be taken to ensure replacement fuses have adequate interrupting ratings.
What Canadian electrical code requirement do OTN fuses satisfy?
OTN fuses, in ratings 15 through 60A, satisfy the Canadian electrical code requirement for Type 'P' low melting-point, non-time-delay fuses.
What approvals do these fuses have?
They are UL Listed to Standard 248-9 (File E2137) and CSA Certified to Standard C22.2 No. 248.9. They are also self-certified for DC per UL248.
What are the key benefits of these general purpose fuses?
They offer versatility, low cost for high protection value, and an easy-to-read imprint label for quick recognition and replacement.
What fuse blocks are recommended for one-time Class K-5 fuses?
Recommended fuse blocks with box connectors are available for 0-60A, 61-100A, 101-200A, 201-400A, and 401-600A ratings for both 250V and 600V applications.
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.