Mersen X300170 - Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 500A With Striker Open Slot Blades
Mersen

X300170

Alternate Item Number: PC32UD69V500EF


Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 3

Multiplier: 3

*Contact for lower quantities*

Overview

The Mersen X300170 Protistor® Size 32 aR high-speed fuse-link is engineered for ultra-fast protection of sensitive semiconductor devices in power conversion equipment. Rated for 690VAC (IEC) and 700VAC (UL), this fuse delivers 500A of continuous current with a breaking capacity of 200kA, ensuring reliable fault interruption in high-fault scenarios. The square body design with open slot blades provides compatibility with multiple mounting styles, including DIN rail and bolted connections, offering flexibility in panel design. Key specifications include a pre-arcing I²t of 28 kA²s and clearing I²t of 160 kA²s at rated voltage, enabling precise coordination with downstream semiconductor components such as diodes, thyristors, and IGBTs. The fuse features die-cut fuse elements embedded in solidified sand to control arcing characteristics, minimizing I²t and reducing stress on protected devices. Silver-plated contact surfaces and non-magnetic hardware enhance electrical conductivity and corrosion resistance, while the integrated striker mechanism enables remote fault indication via a microswitch for system monitoring. With a power dissipation of 90W at rated current, the X300170 is optimized for high-efficiency operation in industrial power conversion systems, including motor drives, inverters, and renewable energy equipment. Manufactured in the US by Mersen, this fuse complies with IEC 60269-4 and UL 248-14 standards, ensuring global compatibility and reliability. The open slot blade design allows for secure mounting with standard hardware, while the square body construction provides mechanical stability in vibration-prone environments. Ideal for applications requiring precise fault protection, the X300170 is a critical component in equipment where semiconductor failure could lead to catastrophic damage. Its compact size (0.55 kg) and robust construction make it suitable for space-constrained installations without compromising performance.
  • Ultra-fast aR fuse for semiconductor protection (diodes, thyristors, IGBTs)
  • Rated 690VAC (IEC) / 700VAC (UL), 500A, 200kA breaking capacity
  • Square body with open slot blades for flexible mounting options
  • Pre-arcing I²t: 28 kA²s, Clearing I²t: 160 kA²s at rated voltage
  • Striker mechanism for remote fault indication via microswitch
  • Silver-plated contacts, non-magnetic hardware, 90W power dissipation
  • Manufactured in US, compliant with IEC 60269-4 and UL 248-14

Specifications

_Family Code
136
_Family Description
Square Body SC Fuses
AC Voltage Rating
700 V
Amperage Rating
500 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
Open Slot Blades
Connection Type
Open Slot Blades
Current Rating
500 A
Material
Silver-plated contact surfaces and non-magnetic hardware
Material
Silver-plated contact surfaces, non-magnetic hardware, solidified sand
Material
Silver-plated, non-magnetic hardware, die-cut elements in solidified sand
Mounting
Bolted
Mounting Type
Square body, flexible mounting styles
Mounting Type
Square Body
Response Time
High-Speed
Series
Protistor®
Size
Size 32
Size
4.96 x 2.32 x 2.56 in
Size
126 x 59 x 65 mm
Special Features
Multiple body sizes and terminals or blades combination aR Class according to IEC 60269-4 and VDE 636-23 Very low I²t for improved semiconductor protection Ultra fast acting Current limiting Superior cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized E76491 CCC GB 13539.4 for Asian market only
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Striker
Voltage Rating
690/700 VAC
Voltage Rating
700 V
Voltage Rating
690VAC IEC 700VAC UL
Wattage
90 W
Package Dimensions (L x W x H)
4.96 in x 2.32 in x 2.56 in
Package Dimensions (L x W x H)
126 mm x 59 mm x 65 mm
Package Weight (Imperial)
1.260 lb
Package Weight (Metric)
0.572 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 Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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 Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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.

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.