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Mersen FESC150 - Fuse FES – HRC-II 600VAC 350VDC 150A Blade FESC
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Mersen FESC150 Fuse FES – HRC-II 600VAC 350VDC 150A Blade FESC

Alternate Item Number: FESC150

UPC: 068938904159


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Line DrawingSpecification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen FESC150 is a Class C high rupturing capacity (HRC-II) fuse designed for short-circuit and backup protection in motor controllers and industrial equipment. This 150A fuse features a ceramic body with BS88 British standard blade dimensions, ensuring compatibility as an exact replacement for older HRCII-C fuses. It is not interchangeable with North American fuse types. The FESC150 supports 600VAC and 350VDC voltage ratings with a 200kA interrupting rating (AC) and 40kA (DC). It is bolt-in mounted for secure installation in motor starter enclosures. Designed for applications where overload protection is handled by a separate overload relay, this fuse provides reliable short-circuit interruption in industrial motor control systems, semiconductor protection circuits, and power distribution panels. The ceramic construction ensures thermal stability and mechanical durability in harsh operating environments.
  • 150A current rating with 600VAC/350VDC voltage capability
  • Class C HRC-II fuse with 200kA AC interrupting rating
  • BS88 British standard blade dimensions for exact replacement compatibility
  • Ceramic body construction for thermal and mechanical durability
  • Bolt-in mounting type for secure installation in motor controllers

Specifications

AC Voltage Rating
600 V
Amperage Rating
150 A
Application
Short circuit and back-up protection of motor controllers and components
Body Material
PolyTube
Brand Name
Mersen
Class
Class C
Connection
Blade
Connection Material
Tin-Plated Copper
Connection Type
Blade
Current Rating
150A
DC Voltage Rating
350 V
Family Code
119
Family Description
HRC Class C Form II
Fuse Class
Class C
Interrupt Rating
200 kA
Material
Ceramic
Mounting
Bolted
Mounting Type
Bolt-in
Series
HRC-II Class C
Size
5.31 x 1.59 in
Size
134.874 x 40.386 mm
Size
British standard (BS88)
Special Features
BS88 dimensions Fast-acting
Standard
CSA Certified HRCII-MISC IEC 269-2-1
Type
HRC Fuses
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
5.31 in x 1.59 in x 1.59 in
Package Dimensions (L x W x H)
134.874 mm x 40.386 mm x 40.386 mm
Package Weight (Imperial)
1.000 lb
Package Weight (Metric)
0.454 kg
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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

Is the FESC150 compatible with North American fuse types?

No, the FESC150 is not interchangeable with North American fuse types due to its BS88 British standard dimensions.

What voltage ratings does the FESC150 support?

The FESC150 supports 600VAC and 350VDC voltage ratings as specified in the manufacturer's datasheet.

What is the material of the FESC150 fuse body?

The FESC150 fuse body is made of ceramic for thermal stability and mechanical durability.

What is the interrupting rating of the FESC150?

The FESC150 has a 200kA interrupting rating for AC applications and 40kA for DC applications.

What is the mounting type for the FESC150?

The FESC150 features a bolt-in mounting type for secure installation in motor starter enclosures.

What is the current rating range for the FESC series?

The FESC series covers current ratings from 80A to 200A as per the manufacturer's catalog.

What applications is the FESC150 designed for?

The FESC150 is intended for short-circuit and backup protection in motor controllers, semiconductor protection circuits, and power distribution panels.

Does the FESC150 require a separate overload relay?

Yes, the FESC150 is designed for applications where overload protection is handled by a separate overload relay.

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.