GDB-125MA

Fuses: GDB-125MA Application Field and Working Principle

The GDB-125MA fuse is a low voltage fuse suitable for a wide range of applications. It is commonly used in telecommunications systems, audio/video systems, and marine applications. This fuse provides fast and reliable protection against short-circuit faults and overloads, and can also be used for high ambient temperature conditions.

The GDB-125MA fuse is designed to meet the UL 248-6 and UL 248-14 standards and is rated at 125A and 125Vdc. It has a nominal melting time i2t of 3 seconds at 500A and a maximum voltage drop of 0.5 Vdc. The fuse is enclosed in an axial leaded design making it easy to install. The compact size also allows for easy mounting and installation in limited space applications.

GDB-125MA Working Principle

The GDB-125MA fuse operates on the principle of heat release. It is designed as an over-current protect device, which melts if a fault or overload current occurs. The fuse element is heated when the normal current passes through the fuse and the heat is dissipated through a ceramic body. However, if an overloaded fault current passes through the fuse, the element overheats and melts, breaking the circuit thus preventing an uncontrolled surge of current.

Once melted, the fuse will open the circuit, preventing further fault current and damage to the circuit. This provides a cost-effective way to protect equipment and circuit components from damage due to faults and overloads. It should be noted that the GDB-125MA is a one-time-use fuse, once it has melted it needs to be replaced.

GDB-125MA Application Field

The GDB-125MA is typically used in telecommunications systems, audio/video systems, and marine applications. It is also suitable for use in high ambient temperature conditions. It is especially suited for telecommunications, CATV, satellite, and high density equipment. Its small size allows it to be easily mounted in tight spaces, providing reliable protection against short-circuit faults and overloads.

The GDB-125MA fuse is UL and CSA listed, making it a reliable and cost-effective way to protect respective equipment and circuits. Its internal design features a ceramic body, which dissipates the generated heat, ensuring the fuse performs under high ambient temperature conditions. The fuse element is enclosed in an axial leaded design, making it easy to install and handle.

In conclusion, the GDB-125MA fuse is a low voltage fuse suitable for widely used applications. It is designed to meet both UL248-6 and UL248-14 standards, providing cost-effective protection against short-circuit faults and overloads. The fuse is small and is enclosed in an axial leaded design allowing it to be easily mounted and handled. The ceramic body dissipates the generated heat, making it suitable for high ambient temperatures.