GMD-500-R

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Fuses are an integral part of any electrical or electronic system. They prevent circuit damage due to electrical faults and short circuits as they protect the circuit from excessive current. The GMD-500-R is a thermal fuse designed specifically for use in hazardous locations. It is UL listed for Class I, II and III Division 2 hazardous locations. The fuse is designed to open the circuit when exposed to temperatures above its rated temperature. It is also available in a variety of sizes and can be used in both AC and DC applications.

Application Field

The GMD-500-R thermal fuse can be used in a variety of industrial applications, including oil and gas, petrochemical, mining, construction, and military. Its unique design makes it suitable for use in hazardous areas, such as those containing hazardous gases, combustible dusts, or high temperatures. It is also suitable for use in harsh environments, such as high-vibration areas or areas with extreme temperatures. It is commonly used in industrial applications, such as atmospheres with hazardous gases, power and process control systems, and critical life safety controls.

Working Principle

The GMD-500-R thermal fuse has a built-in thermal element that responds to heat. When the temperature inside the fuse reaches a predetermined limit, the thermal element trips, causing a rapid increase in the resistance of the fuse. This is followed by a contact, the contact spring, which interrupts the electric circuit. Due to the very rapid response time of the fuse, current is immediately interrupted, preventing the circuit from further damage.

The GMD-500-R thermal fuse is designed to reliably detect temperature rises within the safety zone and trip in a pre-set time. It is equipped with a duel-stage trip time delay that allows for gradual thermal motions before the fuse operates. This allows the operator to take corrective action before the fuse trips, thus reducing the chances of damage to the circuit. The fuse also has a high over-temperature tolerance. This enables the fuse to operate reliably in environments with high temperature changes.

Conclusion

The GMD-500-R thermal fuse is a reliable and robust fuse designed specifically for use in hazardous locations. Its unique design allows it to operate reliably in high-temperature environments, as well as a variety of industrial applications. Its dual-stage trip time delay allows for gradual temperature rises before the fuse trips, reducing the chances of circuit damage. The GMD-500-R is UL approved for use in Class I, II and III Division 2 hazardous locations.

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