Mersen A30QS550-4IL High Speed Fuse Amp-Trap® A30QS 300VAC 300VDC 550A Blade IL Indicator
Alternate Item Number: A30QS550-4IL
UPC: 782001295813
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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
- 550A rated high-speed fuse for 300V AC/DC semiconductor protection
- Low I²t minimizes thermal stress on protected components during faults
- Controlled arc voltage reduces stress on circuit components during clearing
- Integral blown-fuse indicator (IL) for immediate fault detection
- AC interrupting rating up to 200kA IR, DC up to 100kA IR
Specifications
AC Voltage Rating | 300 V |
Amperage Rating | 550 A |
Application | Protection of 300V (or less) heavy duty rectifiers and similar heavy duty power supplies |
Brand Name | Mersen |
Case | GMG |
Case Material | GMG |
Connection | Blade |
DC Voltage Rating | 300 V |
Mounting | Bolted |
Mounting | Bolt |
Size | 3.84 x 2;97.536 x 50.8 in;mm |
Size | 3.84 x 2 in |
Size | 97.536 x 50.8 mm |
Special Features | Low I2t minimizes damage to protected component on short circuit Controlled arc voltage reduces stress to circuit components during fuse clearing Choice of mounting types helps in equipment design |
Standard | UL recognized component UL File E60314 AC: UL guide no. JFHR2 (35-4500A) |
Sub Brand | Amp-Trap® |
Type | Round Body High-Speed Fuse-Links AC Protection |
Type Of Indicators | IL Indicator |
Voltage Rating | 300 V V |
Voltage Rating | 300 V |
Package Dimensions (L x W x H) | 3.84 in x 2 in x 2 in |
Package Dimensions (L x W x H) | 97.536 mm x 50.8 mm x 50.8 mm |
Package Weight (Imperial) | 0.600 lb |
Package Weight (Metric) | 0.272 kg |
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Frequently Asked Questions
What is the voltage and current rating for A30QS fuses?
The A30QS fuses have a rating of 300VAC/DC and a current range from 1 to 4500A.
What is the interrupting rating for A30QS fuses?
The interrupting rating is 200kA I.R. AC and 100kA I.R. DC.
What are A30QS fuses designed to protect?
A30QS fuses are designed for protecting Power Semiconductors like diodes, phase control SCRs, and other power semiconductor devices.
What are the key features of A30QS fuses?
Key features include low I2t to minimize damage, controlled arc voltage, and availability of different mounting types.
What applications are A30QS fuses recommended for?
They are recommended for new applications and for protecting 300V or less heavy-duty rectifiers and power supplies.
Are A30QS fuses UL recognized?
Yes, A30QS fuses are UL recognized components with UL File E60314.
What are the available mounting types for A30QS fuses?
Available mounting types include ferrule, blades/bolt-in, and hockey puck/bolt-in.
Can I get A30QS fuses with an indicator?
Yes, indicator options, including blown-fuse indicators (TI) and IL indicators, are available for A30QS fuses.
What is the L/R time constant for A30QS fuses?
The L/R time constant for A30QS fuses is 10ms.
What are the dimensions for A30QS fuses rated 225 to 700 amps?
For fuses rated 225 to 700 amps with mounting type 4 or 4IL, the dimensions are 3.84 inches (98mm) in length and 1.50 inches (38mm) in width.
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.