045101.6MRSN

Fuses: 045101.6MRSN Application Field and Working Principle

045101.6MRSN fuses are quick-acting fuses (also known as axe fuses), which are among the most frequently used fuses today. They feature all the characteristics of standard fuses, and are widely used in indoor switchgear systems, especially in the power utilities and distribution systems for overcurrent protection. As a UL 248-14 listed 600 VAC, 30 kA axial fuse, the 045101.6MRSN is designed for larger amp ratings than other standard fuses and is used whenever a higher level of protection is needed.

Background

An overcurrent fuse, such as the 045101.6MRSN, is a device that works by blowing when an electrical current greater than its nominal rating passes for an extended period of time, or when a higher current suddenly passes in a short period of time. The job of a fuse is to protect the electrical system in which it is installed from power surges, short circuits, and other destructive conditions. In the process, it prevents damage to electrical devices, wiring, and insulation, thus ensuring the safety of personnel and extending the life of the system.

Material Selection

The material used for the 045101.6MRSN is a high temperature porcelain (ceramic) body. This ceramic material offers excellent thermal performance, insulation, and electrical strength characteristics. It is also able to dissipate heat across the entire fuse body, resulting in quick heat dissipation and fuse operation.

Basic design

The body of the 045101.6MRSN is cylindrical in shape and has a terminal end and a cap end. The cap end has an internal thread, while the terminal end features an eyelet. The two ends are held together by a threaded bolt and nut. The terminals on the eyelet end are silver plated for maximum conductivity. The porcelain material is inspected regularly to make sure that it meets required insulation standards.

Operation

When an overload occurs, the 045101.6MRSN fuse will open to dissiplate the surge of current and limit further damage. When the fuse opens, the current path is broken and the current flow stops. The heat generated by the opening fusible element is dissipated through the body, meaning that the fuse won’t be damaged by the heat.

Specifications

• Body material: High temperature porcelain
• Terminal material: Silver-plated eyelet end
• Rated current: 10%, 13.3%, 16.7%, 20%, 25%, 33.3%, 40%, 50%, 66.7%, 80%, 100%, 125%, 150%, 175%, 200%, 225% of 10 amps
• Rated voltage: 600 volts AC max.
• UL Rating: 248-14
• Operatingtemperature range: -40°C to +60°C
• Break time: 200 milliseconds
• Interrupting Rating: 30 Kiloampere

Applications

The 045101.6MRSN is used in industrial situations, where over-voltage current regularly occurs. It is often used as a primary over-current protection device, in both indoor and outdoor switchgear systems, and is typically used upstream of other protective devices.

This fuse is ideal for use in power utilities and distribution systems because it offers higher amp ratings than other standard fuses and provides a higher level of protection. It is especially suitable for use in feeders, panelboards, and automatic transfer switches.