Mersen L300528 Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 500A With Striker…
Alternate Item Number: A070UD30LI500
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Overview
- 30A rated current with 690VAC (IEC) / 700VAC (UL) voltage rating
- Ultra-fast aR action with 41 kA²s pre-arcing and 264 kA²s clearing I²t
- 200kA rated breaking capacity for high short-circuit protection
- Striker mechanism for visual/tactile fault indication
- Compatible with DIN 80 or TTF mounting styles
- Silver-plated contacts and non-magnetic hardware for reliability
- Optional low-voltage trip indicators for remote monitoring
- Dimensions: 50.6×42×36.6mm (TTF) or 110×77×39mm (DIN 80)
Specifications
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 | Slotted Blades |
Connection Type | Slotted Blades |
Current Rating | 30 A |
Current Rating | 500A |
Material | Silver-plated, non-magnetic hardware |
Material | Silver-plated contact surfaces, non-magnetic hardware, die-cut elements in solidified sand |
Mounting | Bolted |
Mounting Type | Slotted Blades |
Mounting Type | Multiple mounting styles |
Mounting Type | Square Body |
Series | Protistor® |
Size | Size 30 aR |
Size | 5.85 x 1.57 x 1.89 in |
Size | 148.6 x 40 x 48 mm |
Size | Size 30 |
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 | 690VAC/700VAC |
Voltage Rating | 700 V |
Voltage Rating | 690VAC (IEC) / 700VAC (UL) |
Voltage Rating | 690 VAC/700 VAC |
Wattage | 88 W |
Package Dimensions (L x W x H) | 5.85 in x 1.57 in x 1.89 in |
Package Dimensions (L x W x H) | 148.6 mm x 40 mm x 48 mm |
Package Weight (Imperial) | 0.708 lb |
Package Weight (Metric) | 0.321 kg |
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Frequently Asked Questions
What voltage ratings does the L300528 support?
The L300528 supports 690VAC per IEC standards and 700VAC per UL standards.
What is the breaking capacity of this fuse?
The rated breaking capacity is 200kA, providing high short-circuit protection.
Does this fuse include a striker mechanism?
Yes, the L300528 features a striker mechanism for visual/tactile fault indication.
What are the mounting options for this fuse?
The L300528 is compatible with DIN 80 or TTF mounting styles as specified in the datasheet.
What is the I²t value for this fuse?
The pre-arcing I²t is 41 kA²s and the clearing I²t is 264 kA²s at rated voltage.
Can this fuse be used with microswitches for remote monitoring?
Yes, optional low-voltage trip indicators allow remote monitoring via field-mountable microswitches.
What is the power dissipation at rated current?
The fuse dissipates 88W at rated current according to the manufacturer's specifications.
What semiconductor devices is this fuse suitable for?
The L300528 protects diodes, thyristors, IGBTs, and MOSFETs in power conversion equipment.
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.