GMA-2A Application Field and Working Principle

GMA-2A fuses, also known as ‘Diamond-Shaped’ fuses, are designed to protect electrical/electronic equipment from overload and short circuits. These fuses are classified as ‘Current Limiting’ fuses, as they are designed to limit the amount of current that can pass through them. This allows them to open quickly and provide rapid protection of equipment against dangerous currents.

GMA-2A fuses are compact and lightweight, making them an ideal fuse choice for a wide range of applications, from datacenters and industrial systems to HVAC, lighting, and automotive applications. As these fuses are UL Listed, they are suitable for industrial and commercial applications, where safety and reliability are critical. In addition, they meet the US National Electrical Code (NEC) for overcurrent protection in installations, and are rated for up to 600V AC.

GMA-2A Working Principle

GMA-2A fuses work on the same principle as other fuses, namely the heating effect of current. When too much current flows through the fuse, the current’s heat causes the fuse element to expand, thereby breaking the circuit and preventing further flow of current. This is known as a \'thermal trip\'. The thermal trip point is determined by the amount of current that is allowed to flow through the fuse before it breaks the circuit.

GMA-2A fuses feature a unique one-piece construction, which allows them to rapidly open the circuit when overloaded. The one-piece construction consists of a metal alloy and an insulating coating. The stressed metal alloy element is designed to expand rapidly when subjected to excessive electrical current. The insulating coating of the fuse helps protect against accidental short circuiting.

GMA-2A Applications

GMA-2A fuses are suitable for a wide range of applications, including:

• Computer systems
• Data centers
• Lighting
• Industrial systems
• Automotive electronics
• Audio and video equipment
• HVAC systems
• Medical equipment

GMA-2A fuses are also UL and CSA Listed, making them suitable for use in NEC installations. They are available in a range of current rating, from 1 to 60A, and voltage ratings from 600VAC up to 1000VAC/DC. The temperature ratings for these fuses range from -40 to +105 C, and they feature a 10kA interrupting rating (absolute). These fuses are also highly reliable, with a mean time to failure rating of 10,000 hours.

Conclusion

GMA-2A fuses are a highly reliable current-limiting fuse, designed to quickly open the circuit when overloaded. Their unique one-piece construction allows them to rapidly open the circuit, protecting equipment from dangerous current levels. They are suitable for a wide range of applications, from computer systems to HVAC and automotive equipment. They are also UL and CSA Listed, and have a 10,000 hour mean time to failure rating.