Fuses & Fuse holders
In the electrical installations of heavy goods vehicles and trailers, overcurrent protection is a fundamental requirement. Every circuit, from lighting and brake lights to hydraulic systems and heavy power consumers, depends on a fuse that interrupts the current when the rated value is exceeded, before damage occurs to wiring, distribution blocks or connected components. For professional workshops, trailer builders, body builders and transport companies with their own workshop, selecting the correct fuse type and matching holder for each application is essential. Dekoff offers a comprehensive, norm-compliant range of fuses and fuse holders specifically composed for the demands of the truck and trailer sector.
The range covers several distinct categories, each with its own technical characteristics and field of application. Glass fuses are used to protect individual circuits in vehicle electronics, from lighting groups and marker lights to sensors and control systems. Their cylindrical glass housing allows visual inspection, enabling a blown fuse to be identified quickly during workshop maintenance.
Blade fuses, also known as ATO or ATC fuses, are the most widely used protection component in modern vehicle electronics. They are installed per circuit in fuse boxes of heavy goods vehicles and trailers and are available across a wide current range. The internationally standardised colour coding allows fast and error-free identification, saving time and preventing mistakes in a busy HGV workshop. For the heavy transport sector, where systems are under constant load and reliability is paramount, selecting the correct amperage and fuse type directly affects vehicle safety and availability.
For main power circuits where current levels reach tens or hundreds of amperes, strip fuses are the designated solution. This type of fuse complies with the DIN 43560 norm, which defines exact dimensions and melting characteristics for professional use in heavy vehicle technology. Strip fuses are available across a wide current range, from 40 amperes for medium-duty circuits up to 500 amperes for the most demanding power circuits in a vehicle installation. The copper melt element ensures a stable and predictable melting characteristic, so the fuse responds accurately to overcurrent without premature or delayed interruption. Blade fuse trailer and ANL fuse truck applications are a key part of this range, combining high current ratings with the mechanical demands of a moving vehicle.
Alongside the fuses themselves, fuse holders are an essential part of any complete installation. The correct holder determines the reliability of the connection and therefore of the entire electrical system. Fuse holders for HGV 24V are available for all common fuse types, from glass fuses to strip fuses conforming to DIN 43560 and MEGA fuses conforming to ISO 8820-5. The holders are constructed in robust plastic housings that resist vibration, moisture and mechanical stress in professional use on a moving vehicle. For external mounting on trailers and semi-trailers, sealed versions are available that provide long-term protection under harsh operating conditions.
The MEGA fuse holder conforming to ISO 8820-5 is a specific variant used where high current levels are combined with the requirement for a standardised, reliable connection. ISO 8820 is the international norm defining the dimensions and electrical properties of blade fuses for road vehicles, and is widely applied in the heavy transport sector. The AK brand holder provides a rigid, vibration-resistant housing that protects the fuse and guarantees a reliable contact point in the most demanding installations.
Reset fuses complement the range for applications where replacing a fuse after every overcurrent event is undesirable. A reset fuse automatically returns to its normal state once the cause of the overload is removed, reducing downtime and maintenance costs in installations subject to temporary overloads.
For HGV workshops, trailer builders, semi-trailer specialists and transport companies with their own maintenance facility, Dekoff supplies the complete spectrum of fuses and holders required for professional installations in the truck and trailer sector. The range is norm-compliant, broad in current ratings and configurations, and available directly to B2B customers working to the high standards of the heavy transport industry.