Mersen A70QS High-Speed Ceramic Fuse 700V 14x51/22x58mm Ferrule Mount

Mersen A70QS High-Speed Ceramic Fuse 700V 14x51/22x58mm Ferrule Mount

Professional High-Speed Semiconductor Protection with Superior Cycling Performance

Mersen A70QS High-Speed Ceramic Fuse delivers exceptional semiconductor protection with very low I2t characteristics for critical applications. This professional-grade fuse features dual international sizing (14x51mm and 22x58mm) with ceramic body construction and ferrule mount terminals for versatile design integration. Rated for 700VDC and 690VAC operation with superior cycling ability, this high-speed fuse provides reliable protection for inverters, UPS systems, and motor drives.

Professional Features & Benefits

• Very Low I2t Design: Provides enhanced semiconductor protection by minimizing energy let-through during fault conditions
• 700VDC/690VAC Rating: Versatile voltage capability supports both DC and AC applications up to 750VAC in U.S. installations
• Ceramic Body Construction: Delivers superior durability and thermal performance for demanding industrial environments
• High-Speed Characteristics: Rapid fault clearing protects sensitive electronic components from damage
• Ferrule Mount Terminals: Provides secure connections and design versatility for various mounting configurations
• Superior Cycling Ability: Extended service life on difficult cyclic loading applications reduces maintenance requirements
• International Sizing: Dual 14x51mm and 22x58mm dimensions ensure worldwide compatibility and acceptance

Technical Specifications

• Ac Voltage: 690 VAC
• Ampere Range: 10 to 800 A
• Applications: Small inverters, UPS systems, Solid State Relays, motor drives and similar 700V or less equipment
• Body Material: Ceramic
• Body Style: Cylindrical Non Rejection
• Ce Conformity: Consult Technical Services
• Connection Terminal Type: Ferrule
• Csa Certification: 1422-30 1422-30
• Dc Voltage: 700 VDC
• I R Ac: 200 kA
• I R Dc: 100 kA
• Lead Free: Consult Technical Services
• Mounting Method: Clip
• Rohs Compliant: Consult Technical Services
• Speed Characteristic: High-Speed
• Standards: UL Recognized Component CSA Certified IEC 269-4 Compliance
• Ul Certification: E76491 JFHR2.E76491

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

• Small Inverter Protection Systems
• UPS System Fault Protection
• Solid State Relay Applications
• Motor Drive Protection
• Industrial Power Electronics
• Renewable Energy Systems
• Commercial HVAC Controls

Why Choose Mersen Quality?

Mersen A70QS fuses deliver proven reliability with UL Recognition, CSA Certification, and IEC 269-4 compliance. The ceramic body construction and high-speed characteristics ensure dependable performance in critical semiconductor protection applications, backed by comprehensive international standards compliance for professional installations.