TPC-125

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The TPC-125 series is a UL-Listed, specialized, medium-voltage current-limiting fuse. It is designed to provide the maximum fuse protection in input lines and neutral bus separation applications in medium-voltage switchgear. It is commonly used in medium-voltage electronic protective relays, gauges, meters, and circuit breakers. The fuse limits fault currents and prevents them from causing extensive damage to downstream equipment.

The TPC-125 series fuses are designed to initiate an arc and increase its current-limiting capabilities. The fuse consists of an external arc chamber, a high-pressure carbon arc tube, and an internal contact bridge assembly. All of these components are contained within an external, stainless-steel, threaded housing.

The fuse is rated for a maximum fault current of 25 kA RMS symmetrical at a range of operating voltages. The TPC-125 is capable of handling both AC and DC currents of up to 482 A per pole. It is available in both open and closed fuses, and two enclosure sizes.

The TPC-125 series fuse operates singularly or in series with other fuses. It is designed to act as an uninterrupted low-resistance current path and dissipate fault currents quickly and safely. Due to the fuses\' current-limiting capabilities, it is well-suited for use in medium-voltage switchgear enclosures.

The TPC-125 fuse\'s design is based on the principles of inverse-time current limiting. In the event of a fault, the fuse senses the current, and then reacts quickly to reduce the fault level to a safe and acceptable value. The fuse acts as a “short circuit breaker”, reducing the magnitude of the current to a safe level. This protects the downstream equipment from damage due to the excessive current.

The TPC-125 is certified to meet the UL standard for fusing equipment, and is suitable for use in a variety of medium-voltage applications. It is designed to withstand short-duration overvoltages and arcing faults, while providing reliable and safe current-limiting protection for the switchgear.

Whether you are looking for a fuse for your medium-voltage switchgear, or need a fuse specifically for input lines or neutral bus protection, the TPC-125 series fuse is the perfect choice. With its robust construction, and UL-listed ratings, the TPC-125 series fuse is an ideal solution for a wide range of medium-voltage applications.

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