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Mersen 9F59UBD271 - ETP 15500V 12K / 8T Configuration: 271
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Mersen 9F59UBD271 ETP 15500V 12K / 8T Configuration: 271

Alternate Item Number: 9F59UBD271

UPC: 782001401672


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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

The Mersen Sure Guard ETP (SKU: 9F59UBD271) is a current-limiting back-up fuse designed for overhead distribution systems. It operates in series with expulsion fuses to limit high-fault currents, providing full-range protection for external transformer applications. Rated at 15,500V with a 12K/8T configuration, this fuse is compatible with conventional expulsion-fuse cutouts and self-protected transformers. Installation is flexible, allowing mounting on high-voltage bushings or in series with internal expulsion fuses. Manufactured in the US by Mersen, a specialist in electrical protection solutions.
  • Current-limiting back-up fuse for overhead distribution systems
  • Rated 15,500V with 12K/8T configuration
  • Compatible with expulsion-fuse cutouts and self-protected transformers
  • Flexible installation on high-voltage bushings or in series with internal fuses
  • Manufactured in the US by Mersen

Specifications

AC Voltage Rating
15500 V
Application
Short-circuit protection of overhead distribution systems
Body Material
Epoxy
Connection Material
Brass
Interrupt Rating
50 kA
Material
Fuse Element
Mounting Type
High-voltage bushings or in series with internal expulsion fuses
Series
Sure Guard ETP
Size
13.76 x 2.19;349.504 x 55.626 in;mm
Size
Configuration 271
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)
13.76 in x 2.19 in x 2.19 in
Package Dimensions (L x W x H)
349.504 mm x 55.626 mm x 55.626 mm
Package Weight (Imperial)
4.400 lb
Package Weight (Metric)
1.996 kg
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Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

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Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.

LCC5

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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

Frequently Asked Questions

What are the voltage ratings for the 9F59UBC, 9F59UBD, and 9F59UBE models?

The 9F59UBC is rated for 8.3kV AC, the 9F59UBD for 15.5kV AC, and the 9F59UBE for 23.0kV AC.

What is the interrupting current rating for these ETP fuses?

The high fault current interrupting capability is 50kA Sym at the ETP voltage rating.

What is the maximum ampere rating for the 9F59UBC, 9F59UBD, and 9F59UBE models?

The 9F59UBC and 9F59UBD models have ampere ratings from 12K to 80K, while the 9F59UBE ranges from 12K to 25K.

What is the purpose of the Sure Guard ETP back-up current-limiting fuses?

These fuses protect overhead distribution systems and are used with another protective device to limit high-fault current to a safe level.

Can these fuses be used alone for overload protection?

No, back-up current-limiting fuses are not designed or intended to open under overload conditions.

What does 'ETP' stand for in the Sure Guard ETP fuses?

ETP stands for External Transformer Protection.

What hardware options are available for these fuses?

Available hardware options include spade and stud, spade and spade, and parallel configurations, with or without adapters and eyebolt terminals.

What are the dimensions for the 8.3kV 9F59UBC fuse with a 12K rating?

The 8.3kV 9F59UBC with a 12K rating has a Dimension 'A' of 5.9 inches.

What are the dimensions for the 15.5kV 9F59UBD fuse with an 80K rating?

The 15.5kV 9F59UBD with an 80K rating has a Dimension 'A' of 15.68 inches.

What are the dimensions for the 23.0kV 9F59UBE fuse with a 25K rating?

The 23.0kV 9F59UBE with a 25K rating has a 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.