Littelfuse 828 Series High-Voltage Cartridge Fuses

The Littelfuse 828 Series High-Voltage Cartridge Fuses are designed for over-current protection in compact automotive electronics, including onboard chargers, power distribution units, and DC/DC converters. These fuses operate at a voltage rating of 1000 VDC with interrupting ratings up to 10 kA for a 15A to 30A current range. The series features a compact 10 × 38 mm body size and is available in both through-hole and bolt-down versions. Integrated end caps with standoff leads eliminate the need for additional mounting accessories or lead-forming, streamlining assembly. 

The devices are AEC-Q200 qualified, ensuring their suitability for automotive environments, and operate across a wide temperature range of –55°C to +125 °C. Constructed to be RoHS-compliant and lead-free, the 828 Series provides robust protection against over-current faults in high-voltage DC circuits while supporting compact system designs requiring both reliability and high interrupting performance. 

828 Series High Voltage Cartridge Fuses - Features  

The Littlefuse 828 Series Cartridge Fuses provide compact circuit protection with high interrupting capacity, a wide operating temperature range, and compliance with automotive-grade standards. Let’s explore their features in detail:

Voltage and Current Specifications

The 828 Series fuses are engineered for over-current protection in compact auto-electronic systems. They are rated at 800 VDC and offer a current rating range of 15A to 30A. The series features an interrupting rating of 10 kA at 1000 VDC for all current ratings, addressing the requirements of high DC output and DC/DC converter applications.

Physical and Environmental Characteristics

These cartridge fuses have a compact body size of 10 x 38mm. An operational temperature range of -55°C to 125°C allows the fuses to function in extreme temperature environments. The fuses are also RoHS-compliant and lead-free.

Design and Mounting

The 828 Series fuses are available in both through-hole and bolt-down versions. The end caps feature integrated standoff leads and bolt-down functionality. This design simplifies the installation process by eliminating the requirement for additional mounting accessories or lead-forming procedures.

Compliance and Safety

These fuses are RoHS-compliant and lead-free, meeting environmental and regulatory requirements for hazardous substance reduction. The combination of compliance, robust fault interruption, and compact construction ensures suitability for modern electronic systems requiring safe and efficient high-voltage protection.

Applications

The Littelfuse 828 Series High-Voltage Cartridge Fuses are designed for over-current protection in automotive and industrial power electronics. In on-board chargers, they safeguard high-voltage circuits during charging cycles by interrupting excessive fault currents at up to 1000 VDC. Within power distribution units (PDUs), the fuses protect compact circuits from overload conditions, ensuring reliable current flow across multiple system branches. In power supply units (PSUs), the fuses provide critical protection for converters and DC outputs, minimizing damage from short circuits or over-current events. Their 10 kA interrupting rating and AEC-Q200 qualification ensure reliable performance across environments with varying load and temperature demands.