690V High Speed Square Body Semiconductor Fuse

Galaxy Fuse (Yinrong) is a professional manufacturer of the 690V High Speed Square Body Semiconductor Fuse, a high-speed square body fuse series specifically engineered for protecting power semiconductor devices including IGBTs, thyristors, diodes, and SCRs in demanding AC 690V power conversion systems. This ultra-rapid fuse is designed to deliver reliable short-circuit and overcurrent protection for variable frequency drives, power converters, rectifiers, and UPS equipment, where component safety and system uptime are critical.

The 690V High Speed Square Body Semiconductor Fuse covers a continuous current spectrum from 400A to 1250A, accommodating the most demanding high-power stages in industrial drives, wind power converters, and metallurgical rectifiers. As an aR class fast-acting fuse, this rectifier fuse ensures microsecond-level response to fault currents, significantly reducing thermal and mechanical stress on sensitive IGBT modules and power diodes. Its industry-leading 200kA breaking capacity at 690V AC guarantees safe and reliable interruption even under the most severe short-circuit events, providing an exceptional safety margin for electrical engineers and system designers.

This product line strictly conforms to both the international IEC60269-4 and the Chinese GB/T13539.4 standards, and carries CE certification for global market acceptance. The series offers multiple ampere ratings with clearly specified pre-arcing and total clearing I²t values, enabling precise protection coordination with upstream and downstream devices. Comprehensive technical documentation—including time-current characteristics and current-limiting curves—empowers engineers to implement selective protection schemes with confidence while minimizing nuisance tripping.

Beyond its electrical performance, the 690V High Speed Square Body Semiconductor Fuse features robust construction with M10 stud terminals for secure, low-resistance connections and simplified field installation. Yinrong provides complete fuse selection guides and derating curves for altitude and ambient temperature variations, facilitating accurate system design across diverse operating environments. Each production lot undergoes rigorous quality assurance—including precision element etching, homogeneous arc-quenching media filling, and comprehensive factory testing—backed by our ISO 9001:2015-certified facility and extensive field experience in rail transit, wind power, metallurgy, and energy storage systems. Choosing the 690V High Speed Square Body Semiconductor Fuse means prioritizing system safety, protection coordination, and long-term operational reliability.

Size(mm)

Parameters

Approvals＆Standards

• GB/T13539.4

• IEC60269-4

Class of Operation

• gR

• aR

Features＆Benefits

• Industry-leading 200kA interrupting capacity

• Precision-characterized I²t values for selective coordination

• Wide current selection (400A-1250A)

• M10 stud terminal design for secure connections

• Comprehensive technical documentation and derating support

Applications

• High-power industrial variable frequency drives

• Wind turbine power converters

• Metallurgical rolling mill rectifiers

• Traction power systems for rail transit

• Large-scale UPS and critical backup power

Country of Origin

• Peoples’s Republic of China

Conventional Fusing and Non-Fusing