Cut Out Fuse

Sangao durable Cut out fuses are an important component of our power distribution system, helping to protect sensitive and expensive equipment and keep them safe during power outages. Cut out Fuse and Open About are integrated. This device can disconnect the transformer from the power line in emergency situations. It consists of a fusible metal strip supported by an insulator between two terminal clamps. As a fault protection device, its working principle is simple and easy to install.

Usage conditions:

1. The ambient temperature is within the range of -40 ℃ to+40 ℃;

2. The altitude shall not exceed 1000 meters; (Adjustments are required for distances exceeding 1000 meters).

3. The frequency of the AC power supply shall not exceed 100Hz;

4. The mechanical load shall not exceed the rated value.

characteristic:

-Small size, light weight, easy to transport and install; -Superior performance, high mechanical strength, and improved reliability of power lines; -Excellent hydrophobicity and stain resistance; -Long term resistance to aging and leakage marks.

Fuse holder, polymer fuse

Large lifting ring bolt connector

Fuse connection current range: 1A to 100A

Creepage and leakage distance: 12.6 inches (319 millimeters)

Cut out Fuse helps protect the power distribution system of Public Power Bureaus (PUDs) by providing a simple and easy to replace fault protection device that prevents more expensive equipment from being damaged due to overcurrent.

When objects such as tree branches come into contact with distribution lines and cause faults by coming into contact with other lines or the ground, overcurrent occurs. In an overcurrent event, the fuse will gradually weaken until it melts, thereby cutting off the current. The result is a partial power outage (hopefully), and then nearby sensitive (and expensive) equipment will be damaged, or before upstream protection devices are activated and the problem evolves into a community power outage.

Cut out fuses are typically installed on utility poles, and their rated power can withstand various voltage and current levels within the public area (PUD) service area.

Cut out Fuse consists of an insulator and top and bottom terminals. The top terminal is connected to the input "hot" main distribution line, and the bottom terminal is connected to the transformer. The main body of a fuse is usually made of ceramic or polymer material, which helps prevent electric arcs. It is equipped with a metal wire of a specific size inside, called a "fuse link". When overcurrent occurs, the fuse will melt, which is a replaceable part of the fuse. The top and bottom of the fuse body are covered with metal cover plates.

When a faulty branch fails, the current will cause the fuse "gate" to open. In most cases, the results are terrible... the fuse just rotates downwards and remains half open, immediately sending a fault signal to the line workers.

Sometimes, the fuse will melt, emitting dazzling flashes and sounds similar to gunshots or car backfires. Some circuit breakers are equipped with arc shields to help suppress potential sparks or arcs. Some fuses do not detach from the terminals, causing the cover to melt into place. In each case, the PUD system will detect a power outage and the line staff will immediately rush to the scene.

After finding the damaged fuse, the circuit worker will use a device called a "live stick" to reach out and remove the damaged fuse. Most fuses can be reused by replacing internal metal components. The rated voltage of the electrified rod is higher, and a new fuse can be fixed and placed in the circuit breaker. Once the circuit is cleaned and deemed safe, the circuit worker can quickly rotate the fuse upwards to the upper terminal to close it. The upper terminal is equipped with a spring, which helps to secure the fuse in place.