Mersen A70QS63-22FI - These Premium Amp-trap French Cylindrical Semiconductor Fuses are an extension of the popular A70QS product line. They are solid-fill 14mm and 22mm fuses IEC rated 690VAC, 200kA Interrupting and 700VDC, 100kA interrupting at 10ms time constant. In addition, these fuses have an 890 VDC rating for capacitor discharge applications up to 2.5ms time constant. All ampere ratings are available with a striker. Applications include small inverter drives and UPS systems, with superior I²t for improved protection and performance. 690 Volts 63 amps 22x58 ferrule w/striker.
Mersen

A70QS63-22FI

Alternate Item Number: 782001142278

UPC: 782001142278

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Overview

The Mersen A70QS63-22FI Premium Amp-trap French Cylindrical Semiconductor Fuse represents a significant advancement in high-performance circuit protection, extending the capabilities of the widely recognized A70QS product line. Engineered for demanding industrial environments, this fuse is designed to safeguard sensitive semiconductor devices from overcurrent and short-circuit events with exceptional speed and reliability. Its robust construction features a solid-fill ceramic body, ensuring superior thermal management and mechanical integrity even under extreme operating conditions. The 22x58mm ferrule dimensions provide a standard form factor for easy integration into existing systems, while the integrated striker mechanism offers enhanced functionality for signaling fuse operation to control systems or monitoring equipment. This premium fuse boasts impressive electrical ratings, including an IEC rating of 690VAC with a substantial 200kA interrupting capacity. This high interrupting rating is critical for applications where fault currents can be exceptionally large, preventing catastrophic damage to equipment and ensuring personnel safety. Furthermore, the A70QS63-22FI is rated for 700VDC with a 100kA interrupting capacity at a 10ms time constant, making it suitable for DC power systems. A specialized rating of 890VDC is also provided for capacitor discharge applications, with a fast-acting response up to a 2.5ms time constant, crucial for protecting power electronics during rapid energy release. The Mersen A70QS63-22FI is particularly well-suited for protecting modern power electronic components found in applications such as small inverter drives and Uninterruptible Power Supply (UPS) systems. These applications often require fuses with superior I²t characteristics, which quantify the total energy let-through during a fault. The A70QS63-22FI's optimized I²t performance translates directly into improved protection for the semiconductor devices it guards, leading to enhanced system reliability and extended equipment lifespan. By minimizing the energy that reaches sensitive components, this fuse helps prevent thermal runaway and premature failure. Key specifications and benefits include: * **High Voltage Ratings:** 690VAC (200kA IC) and 700VDC (100kA IC @ 10ms), plus 890VDC for capacitor discharge (2.5ms TC). * **Superior I²t Performance:** Offers enhanced protection for semiconductor devices, reducing energy let-through during faults. * **Robust Construction:** Solid-fill ceramic body and ferrule design ensure durability and reliable operation. * **Integrated Striker:** Facilitates integration with control and monitoring systems. * **Compact Size:** 22x58mm ferrule dimensions for broad compatibility. * **Application Versatility:** Ideal for inverter drives, UPS systems, and other DC power applications. Mersen's long-standing reputation for quality and innovation in fuse technology makes the A70QS63-22FI a trusted choice for engineers and system designers seeking uncompromising protection for their critical power systems. Selecting the correct fuse is paramount in industrial power distribution, and the A70QS63-22FI provides the performance and reliability necessary to meet the stringent demands of today's advanced electronic equipment.
  • Mersen Premium Amp-trap French Cylindrical Semiconductor Fuse
  • 690VAC, 63A, 22x58mm ferrule with striker
  • IEC rated: 690VAC, 200kA IC; 700VDC, 100kA IC @ 10ms
  • Specialized 890VDC rating for capacitor discharge (up to 2.5ms TC)
  • Superior I²t for enhanced protection in inverter drives and UPS systems

Specifications

Amperage Rating
63 A
Application
Small inverters, UPS systems, Solid State Relays, motor drives and similar 700V or less equipment
Brand Name
Ferraz Shawmut
Connection
Ferrule
Mounting
Clip
Special Features
International 14 x 51mm (2 In x 9/16 In) and 22 x 58mm (2-1/4 In x 13/16 In) sizes for worldwide acceptance Ferrule mount for design versatility Very low I2t for improved semiconductor protection 690V IEC rated, tested at 760VAC, can be used up to 750VAC in U.S. 700VDC rated for dc protection of equipment with L/R <= 10ms/c Superior cycling ability for longer life on difficult cyclic loading applications
Standard
UL Recognized Component CSA Certified IEC 269-4 Compliance
Type
North American Round Style
Type Of Indicators
Striker
Voltage Rating
690 VAC
Package Dimensions (L x W x H)
2.28 IN x 0.86 IN x 0.86 IN
Package Dimensions (L x W x H)
5.7912 cm x 21.844 mm x 21.844 mm
Package Weight (Imperial)
0.100 L
Package Weight (Metric)
0.045 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 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
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 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.