Mersen A30QS250-4IL High Speed Fuse Amp-Trap® A30QS 300VAC 300VDC 250A Blade IL Indicator
Alternate Item Number: A30QS250-4IL
UPC: 782001303983
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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
- 250A current rating, 300VAC/DC voltage rating
- Current-limiting, fast-acting fuse for power semiconductor protection
- Low I²t minimizes damage during short circuits
- Controlled arc voltage reduces stress on circuit components
- Blade mounting type with indicator option for blown-fuse detection
Specifications
AC Voltage Rating | 300 V |
Amperage Rating | 250 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?
These fuses are rated for 300VAC / DC and have an ampere rating from 1 to 4500A.
What is the interrupting rating for A30QS fuses?
The interrupting rating is 200kA for AC and 100kA for DC.
What type of power semiconductor devices are these fuses for?
They are intended for protecting power semiconductors like diodes, phase control SCRs, and other similar devices.
What is the L/R time constant for these fuses?
The L/R time constant for these fuses is 10ms.
What are the key features of A30QS fuses?
Features include low I2t to minimize damage, controlled arc voltage, and options for mounting types.
Are these fuses suitable for DC applications?
Yes, they offer superior DC capabilities and have a DC interrupting rating of 100kA.
What does the 'IL' in the catalog number signify?
The 'IL' in the catalog number indicates that the fuse has an integral blown-fuse indicator.
What are the available mounting types for A30QS fuses?
Available mounting types include ferrule, blades (bolt-in), and hockey puck (bolt-in).
What is the UL recognition status for these fuses?
These fuses are UL recognized components with UL File E60314 and AC UL guide no. JFHR2 for specific ratings.
What is the purpose of the low I2t feature?
The low I2t feature minimizes damage to the protected component during a short circuit event.
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.