What are the product features of the Bolt On Fuse Holder?
November 23, 2025
Bolt-on fuse holders have prominent characteristics such as reliable installation, strong adaptability to high current and harsh environments, and flexible configuration. These features enable them to meet the use requirements of multiple fields like automobiles and industry. The specific product features are as follows:
- Secure and Stable Installation Structure
- Anti-vibration bolted design: Its core feature lies in the bolt-down mounting method. It is fixed with bolts such as M5, M6, and M8, which can avoid loosening caused by vibration during the operation of vehicles and machinery. For example, it can maintain stable connections even under the vibration of truck chassis and construction machinery. Some products are also equipped with through-hole designs and specified torque standards (e.g., up to 20Nm) to further ensure installation firmness.
- Convenient assembly and expansion: Many models are designed for combined use. For instance, the MIDI-Flex series has a dovetail structure on both sides to connect multiple fuse holders and form a power distribution module; the MEGA - 298 series can connect more same-type products through side interlocking pins for multi-fuse application scenarios. Some products also have base slots to facilitate stable cable tie installation and optimize wiring layout.
- Strong Adaptability to High-Current Circuits
- High rated current: It is specifically designed for high-current scenarios. The maximum current rating of different models varies widely. For example, the MIDI-Flex series can be compatible with MIDI® fuses up to 200A, and the MEGA - 298 series can even reach a maximum rated current of 500A. This enables it to be applied to main circuits and high-power equipment such as battery packs, alternators, and industrial motor drives.
- Excellent conductive performance: The internal components are made of high-quality conductive materials. For example, some products adopt 100% pure copper contacts plated with tin, and stainless steel hardware. These materials not only reduce contact resistance and avoid excessive heat generation during high-current transmission but also enhance corrosion resistance and ensure long-term stable conductive performance.
- Reliable Protection Performance in Harsh Environments
- Good sealing and dustproof/waterproof performance: Many products have high-level protection grades. For example, the MEGA® SN series has IP66 and IP6K9K protection ratings. It uses Assurance Latch™ sealed positive locking technology to form a waterproof fuse compartment, which can prevent fuse corrosion and avoid the impact of dust and water on internal components. It is very suitable for marine and off-road vehicle environments.
- Wide temperature adaptation range: It can work stably in extreme temperature environments. The operating temperature range of most models is between -40°C and 125°C, and some high-performance models can even withstand the low temperature of -50°C. This allows it to adapt to the harsh temperature changes of outdoor equipment and industrial workshops.
- Multiple safety certifications: It meets a variety of safety standards to ensure use safety in special scenarios. For example, some products have ignition protection functions that comply with SAE J1171 and ISO 8846 standards, and can be installed in battery boxes or vehicles transporting dangerous goods. The cover also adopts materials meeting UL 94 V-0 flammability grade, which can effectively prevent the spread of fire.