1000V DC High Speed Semiconductor Protection Fuse

Zhejiang Galaxy Fuse Co., Ltd. is a professional manufacturer of the 1000V DC High Speed Semiconductor Protection Fuse, a high-speed square body fuse series specifically engineered for protecting power semiconductor devices including IGBTs, thyristors, diodes, and SCRs 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, traction power supplies, rectifiers, and industrial drives, where component safety and system uptime are critical.

The 1000V DC High Speed Semiconductor Protection Fuse covers a continuous current spectrum from 1000A to 2500A, accommodating the most demanding high-power stages in battery energy storage systems (BESS), DC traction substations, and large-scale industrial rectifiers. 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 1-3ms 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. 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. Each rating is supported by detailed derating guidelines for altitude and ambient temperature variations, facilitating accurate system design across diverse operating environments.

Beyond its electrical performance, the 1000V DC High Speed Semiconductor Protection Fuse features robust construction with M10 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 four decades of field experience in rail transit, renewable energy, metallurgy, and energy storage systems. Choosing the 1000V DC High Speed Semiconductor Protection 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 (1-3ms time constant)

● Precision-characterized I²t values for selective coordination

● Wide high-current selection (1000A-2500A)

● M10 stud terminal design for secure connections

● Comprehensive technical documentation and derating support

Applications

● Battery Energy Storage Systems (BESS)

● DC traction power substations for rail transit

● Large-scale industrial rectifiers and converters

● Renewable energy DC coupling systems

● High-power UPS and critical backup power

Country of Origin

● Peoples’s Republic of China

Conventional Fusing and Non-Fusing