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Mersen HSJ90 - Fuse HSJ - Class J - High-Speed 600VAC 500VDC 90A Blade Amp-Trap®
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Mersen HSJ90 Fuse HSJ - Class J - High-Speed 600VAC 500VDC 90A Blade Amp-Trap®

Alternate Item Number: HSJ90

UPC: 782001329587


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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 HSJ90 is a High-Speed Class J fuse, SKU HSJ90, rated for 90A at 600VAC and 500VDC. This Amp-Trap® fuse provides dual protection for semiconductor devices and branch circuits, offering very low I²t values essential for safeguarding power semiconductors like Diodes, SCRs, GTOs, and Solid State Relays (SSRs). Its optimized overload capability is engineered to manage elevated current levels during the start-up cycles of electronic motor controllers, preventing nuisance openings during frequent starts and stops. The HSJ90 features a current-limiting design and is suitable for both AC and DC applications. It boasts a high interrupting rating of 200kA AC and 100kA DC (L/R ≤ 10mS). Approvals include UL listed to standard 248-8 (File E2137) and CSA certified to standard C22.2 no. 248.8. Its compact size and Class J rating make it ideal for branch circuits, control panels, electronic motor controllers, phase controllers, drives, soft-starters, and solid-state relays. Dimensions for this 90A rating fall under Figure 2 for the HSJ series.
  • Mersen HSJ90 High-Speed Class J Fuse
  • 90A Current Rating
  • 600VAC / 500VDC Voltage Rating
  • Low I²t for semiconductor protection
  • UL Listed to standard 248-8, CSA Certified to C22.2 no. 248.8

Specifications

AC Voltage Rating
600 V
Amperage Rating
90 A
Application
Branch circuits Control panels Electronic motor controllers Phase controllers Drives Soft-starters Solid state relays
Body Material
GMG
Brand Name
Mersen
Class
Class J
Connection
Blade
Connection Material
Silver-Plated Copper
DC Voltage Rating
500 V
Fuse Class
J
Interrupt Rating
200 kA
Mounting
Clip
Size
4.63 x 1.06 in
Size
117.602 x 27 mm
Special Features
Optimized over-load capability for withstanding elevated levels of current during electronic motor controller starts Low I2t (low thermal energy) Excellent cycling ability for frequent starts/stops without nuisance opening
Standard
UL listed to standard 248-8 File E2137 CSA certified to standard C22.2 no. 248.8 DC listed to UL 248
Sub Brand
Amp-Trap®
Type
Class J
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
4.63 in x 1.06 in x 1.06 in
Package Dimensions (L x W x H)
117.602 mm x 27 mm x 27 mm
Package Weight (Imperial)
0.237 lb
Package Weight (Metric)
0.108 kg
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
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 and amperage ratings for the HSJ fuse?

The HSJ fuse has ratings of 600VAC and 500VDC. Amperage ratings range from 1 to 600A for AC and 15 to 600A for DC.

What is the interrupting rating (IR) for the HSJ fuse?

The interrupting rating is 200kA I.R. AC and 100kA I.R. DC. It is self-certified for 600VAC at 300kA I.R. with UL witnessing.

What is the primary design purpose of the HSJ fuse?

The HSJ fuse is designed for the starting characteristics of solid-state motor controllers, combining low I2t with branch circuit performance.

What types of power semiconductors can the HSJ fuse protect?

The HSJ fuse can protect power semiconductors such as Diodes, SCRs, GTOs, and SSRs.

What are the key features and benefits of the HSJ fuse?

Key features include optimized overload capability, low I2t, and excellent cycling ability for frequent starts/stops without nuisance opening.

What applications is the HSJ fuse suitable for?

The HSJ fuse is suitable for branch circuits, control panels, electronic motor controllers, phase controllers, drives, soft-starters, and solid-state relays.

What are the UL and CSA approval standards for the HSJ fuse?

The HSJ fuse is UL listed to standard 248-8 and CSA certified to standard C22.2 no. 248.8. It is also DC listed to UL 248.

What is the L/R time constant for the HSJ fuse's interrupting rating?

The L/R time constant is 10mS or less for the interrupting rating.

Does the HSJ fuse offer current-limiting capabilities?

Yes, the HSJ fuse is a current-limiting fuse.

Are AC and DC ratings available for the HSJ fuse?

Yes, the HSJ fuse has both AC and DC ratings.

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.