Mersen 9F59UBD262 ETP 15500V 25K / 15T Configuration: 262
Alternate Item Number: 9F59UBD262
UPC: 782001401641
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Current-limiting fuse for overhead distribution systems
- Protects conventional and self-protected transformers
- 15,500V voltage rating
- 25K Ampere current rating
- Manufactured in the US
Specifications
AC Voltage Rating | 15500 V |
Application | Short-circuit protection of overhead distribution systems |
Body Material | Epoxy |
Connection Material | Brass |
Current Rating | 25 K |
Interrupt Rating | 50 kA |
Poles | 15T |
Series | ETP |
Size | 19.18 x 2.19;487.172 x 55.626 in;mm |
Special Features | Various hardware options Current-limiting for superior equipment protection Weather-tight construction High fault current interrupting capability: I.R. Sym = 50kA at ETP voltage rating. |
Type | Distribution Transformer Protection |
Voltage Rating | 15500 V |
Package Dimensions (L x W x H) | 19.18 in x 2.19 in x 2.19 in |
Package Dimensions (L x W x H) | 487.172 mm x 55.626 mm x 55.626 mm |
Package Weight (Imperial) | 6.225 lb |
Package Weight (Metric) | 2.824 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 are the voltage ratings for the 9F59U Series ETP fuses?
The available voltage ratings are 8.3kV AC for the 9F59UBC, 15.5kV AC for the 9F59UBD, and 23.0kV AC for the 9F59UBE.
What is the interrupting current rating for these fuses?
The high fault current interrupting capability (I.R. Sym) is 50kA at the ETP voltage rating.
What are the available ampere ratings for the 9F59U Series fuses?
The ampere ratings range from 12K to 80K for the 9F59UBC and 9F59UBD models, and 12K to 25K for the 9F59UBE model.
What is the purpose of the Sure Guard ETP back-up fuses?
These fuses protect overhead distribution systems by limiting high-fault current when used with another protective device.
Can these fuses be used for overload protection?
No, back-up fuses are not designed or intended to open under overload conditions.
What is the function of a back-up current-limiting fuse?
A back-up fuse interrupts currents between its rated minimum and maximum interrupting currents, but is not for overload conditions.
What hardware options are available for the Sure Guard 9F59U Series fuses?
Available hardware includes adapters, eyebolt terminals, and parallel groove connectors, with various combinations offered.
What are the dimensions for the 9F59UBC fuse with a 12K ampere rating?
The 9F59UBC fuse with a 12K ampere rating has a length dimension 'A' of 5.9 inches.
What are the dimensions for the 9F59UBD fuse with a 25K ampere rating?
The 9F59UBD fuse with a 25K ampere rating has a length dimension 'A' of 15.68 inches.
What are the dimensions for the 9F59UBE fuse with a 12K ampere rating?
The 9F59UBE fuse with a 12K ampere rating has a length dimension 'A' of 15.68 inches.
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.









