Mersen A50QS High Speed Fuse 400A 500VAC/500VDC Blade Terminal Power Protection System

Mersen A50QS High Speed Fuse 400A 500VAC/500VDC Blade Terminal Power Protection System

Professional High-Speed Electrical Protection for Critical Power Systems

The Mersen A50QS High Speed Fuse delivers reliable 400A electrical protection with dual AC/DC voltage capability at 500V. This professional-grade Amp-Trap fuse features blade terminal connections with tin-plated copper construction and GMG insulating material for dependable performance in demanding electrical applications. With 63 kA breaking capacity and high-speed characteristics, this bolted-mount fuse provides essential overcurrent protection for critical power distribution systems.

Professional Features & Benefits

• 400A Current Rating: Handles substantial electrical loads while providing precise overcurrent protection for high-capacity circuits and equipment.
• Dual 500VAC/500VDC Capability: Versatile voltage compatibility supports both AC and DC applications in diverse electrical systems and installations.
• 63 kA Breaking Capacity: Superior fault current interruption capability ensures reliable protection even under severe short-circuit conditions.
• High Speed Characteristics: Rapid response time minimizes equipment damage and system downtime during fault conditions.
• Blade Terminal Design: Secure bolted mounting with tin-plated copper terminals ensures reliable electrical connections and easy installation.
• GMG Insulating Material: Professional-grade body construction provides excellent electrical insulation and mechanical durability.
• RoHS Compliant: Environmentally responsible design meets current regulatory standards for hazardous substance restrictions.

Technical Specifications

• Ac Max I R Breaking Capacity I1: 63 kA
• Ac Or Dc: AC/DC
• Ampere Rating: 400 A
• Body Insulating Material: GMG
• Connection Terminal Material: Tin-Plated Copper
• Connection Terminal Type: Blade
• Frequency Hz : 50/60 Hz
• Mounting Method: Bolted
• Product Length: 4.34 in
• Product Weight: 0.68 lb
• Rated Voltage Ac Ul: 500 V
• Rated Voltage Dc Ul: 500 V
• Rohs Compliant: Yes
• Speed Characteristic: High Speed

Installation & Operation

1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Industrial Motor Control Centers and Power Distribution Panels
• Commercial Building Electrical Systems and Main Service Equipment
• Manufacturing Facility Power Protection and Process Equipment
• Data Center and Critical Infrastructure Power Systems
• Renewable Energy Systems and Battery Storage Applications
• Heavy Equipment and High-Current Load Protection
• Emergency Power Systems and Generator Applications

Why Choose Mersen Quality?

Mersen delivers proven electrical protection solutions with professional-grade construction and reliable performance. The A50QS series combines high-speed protection characteristics with robust GMG insulation and tin-plated copper terminals for long-term durability. RoHS compliance ensures environmental responsibility while maintaining the superior protection standards required for critical electrical applications.