1000V DC High-Speed Square Body Semiconductor Fuse

Zhejiang Galaxy Fuse Co., Ltd. is a professional manufacturer of the 1000V DC High-Speed Square Body Semiconductor Fuse, a high-speed square body fuse series specifically engineered for protecting power semiconductor devices including IGBTs, MOSFETs, thyristors, and diodes in demanding DC 1000V power conversion systems. This ultra-rapid fuse is designed to deliver reliable short-circuit and overcurrent protection for energy storage systems, DC common bus systems, traction power supplies, and photovoltaic inverters, where component safety and system uptime are critical.

The 1000V DC High-Speed Square Body Semiconductor Fuse covers a continuous current spectrum from 20A to 315A, accommodating a diverse range of power stages from auxiliary circuits to main DC links. As an aR class ultra-fast fuse, this DC fuse ensures microsecond-level response to fault currents, significantly reducing thermal and mechanical stress on sensitive IGBT modules and power diodes. Its 50kA breaking capacity at 1000V DC with a ≤15ms time constant guarantees safe and reliable interruption even under 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 1000V DC High-Speed Square Body Semiconductor Fuse features robust construction with M8 stud terminals for secure, low-resistance connections and simplified field installation. Every 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, renewable energy, and battery energy storage systems (BESS). Choosing the 1000V DC 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 50kA DC interrupting capacity (≤15ms time constant)

● Precision-characterized I²t values for selective coordination

● Wide current selection (20A-315A)

● M8 stud terminal design for secure connections

● Comprehensive technical documentation and derating support

Applications

● Battery Energy Storage Systems (BESS)

● DC common bus systems

● Photovoltaic (PV) inverters and solar combiner boxes

● Traction power systems for rail transit

● High-power UPS and critical backup power

Country of Origin

● Peoples’s Republic of China

Conventional Fusing and Non-Fusing