What is Federal Supply Class 5920?

FSC 5920 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5920) in the USA for supply items codified in the category of Fuses, Arrestors, Absorbers, and Protectors.

What is NATO Supply Classification Class 5920?

NSC 5920 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5920 in the USA) for supply items codified in the category of Fuses, Arrestors, Absorbers, and Protectors.

Which Federal Supply Group is FSC 5920 in?

FSC 5920 is in Federal Supply Group (FSG) 59 which contains Electrical and Electronic Equipment Components.

Which NATO Supply Classification Group is NSC 5920 in?

NSC 5920is in NATO Supply Classification Group (NSG) 59 which contains Electrical and Electronic Equipment Components.

What is a Cartridge Fuse?

A Cartridge Fuse (FUSE,CARTRIDGE) is a fuse in which the element is inclosed in a cylindrical body. The element may be renewable. The terminals may be of varying types. It may contain a visual indication that the fusible element is severed, and may also provide an audible alarm through auxiliary circuitry. For noncylindrical items, see FUSE, INCLOSED LINK.

What is an Enclosed Link Fuse?

An Enclosed Link Fuse (FUSE,ENCLOSED LINK) is a fuse in which the element is inclosed in a body of other than cylindrical shape. It may include visual indication that the fusible element is severed. For cylindrical items, see FUSE, CARTRIDGE. Excludes FUSE, OPEN LINK; and FUSE LINK, ELECTRICAL.

What is a Fuse Panel?

A Fuse Panel (PANEL,FUSE) is an item which consists of a panel with fuseholders mounted thereon and with terminal facilities. It is usually designed for power distribution service. May include fuses.

What is an Electrical Surge Arrester?

An Electrical Surge Arrester (ARRESTER,ELECTRICAL SURGE) is a circuit-protecting device which provides a discharge path for abnormal surges of high potential while consuming little or no power at normal operating voltage. Excludes items which absorb continuously recurring cyclic pulses. For resistors which are sensitive to voltage changes or used as elements in surge arresters, see RESISTOR, VOLTAGE SENSITIVE. See also ABSORBER, OVERVOLTAGE; AND CUTOUT DISK, PROTECTIVE.

What is an Electrical Fuse Link?

An Electrical Fuse Link (FUSE LINK,ELECTRICAL) is an item which forms the replaceable fusible element of an electrical fuse and is prefabricated to a specific size and rating. It may be inclosed. See also FUSE, INCLOSED LINK and FUSE, OPEN LINK.

What is a Primary Expulsion Fuse Cutout?

A Primary Expulsion Fuse Cutout (FUSE CUTOUT,PRIMARY EXPULSION) is a device designed to protect heavy duty electrical power and lighting primary circuits and equipment against excessive electrical currents by automatically de-energizing the affected section of the circuit. Consists of a fusible element and a mechanism for quick disconnect of circuit when fuse is blown. May be designed for automatic re-energizing after a predetermined time delay.

A Fuse Box is an enclosure which includes, mounts, and protects one or more FUSEHOLDER. It is designed for and may include a cover. May also include electrical fuses, mounting hardware, lock(s), conduit fittings, and terminal board(s) used specifically for terminating the fuses or fuseholders. For boxes containing combinations of different electrical devices, such as switches, jacks, fuseholders, connectors, circuit breakers, terminal boards, and the like, see DISTRIBUTION BOX. For boxes designed to mount but which do not include fuseholders, see JUNCTION BOX. Excludes CHAMBER, CABLE TERMINAL; FUSEHOLDER; and TERMINAL BOX.

What is an Open Link Fuse?

An Open Link Fuse (FUSE,OPEN LINK) is a fuse in which the element is not inclosed. It does not contain an alarm indication of the element being severed. See also FUSE LINK, ELECTRICAL and FUSE, INCLOSED LINK.

What is an Overvoltage Absorber?

An Overvoltage Absorber (ABSORBER,OVERVOLTAGE) is an item specifically designed to absorb and consume surges of voltage such as that resulting across contacts when breaking a circuit having an inductive load or a burst of static across a telephone receiver. It is connected in parallel with the item it is protecting. It may be made up of metallic rectifier cells or semiconductor devices connected back-to-back which may or may not be shunted by a capacitor. It may also be a single rectifier cell or semiconductor device shunted by a capacitor. Excludes metallic rectifiers which are rated for rectifying capabilities and all single unit semiconductor devices not shunted by a capacitor. For items perfoming this function by use of voltage sensitive resistors, see RESISTOR, VOLTAGE SENSITIVE. See also CUTOUT DISK, PROTECTIVE.

What is a Block Fuseholder?

A Block Fuseholder (FUSEHOLDER,BLOCK) is a fuseholder in which the fuseholder stud and/or clips and insulation are mounted on a flat base. Excludes FUSEHOLDER, RECEPTACLE.

What is an Extractor Post Fuseholder?

An Extractor Post Fuseholder (FUSEHOLDER,EXTRACTOR POST) is a fuseholder in which the clips or contacts for electrical connection to the fuse are mounted in a tubular body or similar inclosure which surrounds the fuse. It generally contains a removable cap or knob. It includes in-the-line type and those designated as miniature type FUSEHOLDER (as modified).

What is a Series Circuit Protector?

A Series Circuit Protector (PROTECTOR,SERIES CIRCUIT) is an item specifically designed to be used in series transformer circuits for prevention of open circuit run-away voltages.

What is a Fuseholder Subassembly?

A Fuseholder Subassembly is the components of a fuseholder which together form the carrier to hold a fuse in position to provide electrical contact, but which in itself is not a complete functioning item and cannot be assigned a more definite item name.

Fuses, Arrestors, Absorbers, and Protectors - Norway (NO)

Federal Supply Class (FSC): 5920

NATO Supply Classification Class (NSC): 5920

Federal Supply Group (FSG): 59 Electrical and Electronic Equipment Components

NATO Supply Classification Group (NSG): 59 Electrical and Electronic Equipment Components

Items Managed by Norway (NO) - NCB is 25

Page 2 of 7

NSN Format for Fuses, Arrestors, Absorbers, and Protectors
Codified by Norway

59	20	25	XXX
Group FSG	Class	NCB	Identifier
FSC Federal Supply Class		NIIN
NSN

NATO Supply Class 5920 is a classification within NATO Supply Group 59, which is dedicated to Electrical And Electronic Equipment Components.

Class 5920 specifically includes fuses, arrestors, absorbers, and protectors. These components play a crucial role in electrical and electronic systems by protecting them from overcurrent, overvoltage, and other electrical disturbances.

Fuses are devices that are designed to break the circuit when excessive current flows through them, thus protecting the equipment from damage. They are commonly used in electrical systems to prevent fires and other hazards.

Arrestors, on the other hand, are used to protect electrical equipment from overvoltage surges. They divert the excess voltage to the ground, preventing it from damaging the equipment.

Absorbers are components that absorb or dissipate electrical energy, typically in the form of transient voltage spikes or surges. They help protect sensitive electronic devices from damage caused by these voltage fluctuations.

Protectors are devices that provide protection against various electrical disturbances, such as electromagnetic interference (EMI) and radio frequency interference (RFI). They are commonly used in electronic systems to ensure proper functioning and prevent interference from external sources.

In summary, NATO Supply Class 5920 includes fuses, arrestors, absorbers, and protectors, which are essential components in electrical and electronic systems. They provide protection against overcurrent, overvoltage, and other electrical disturbances, ensuring the safe and reliable operation of equipment.

FSC 5920 Fuses, Arrestors, Absorbers, and Protectors - Norway (NO)

Includes Fuseholders; Fuse Boxes; Fuse Posts; Fuse Links; Fuse Blocks; Current Limiters; Corona Balls; Electrostatic Dischargers.

Excludes Circuit Breakers.

Note-Mounting hardware, included in classes of this group, includes such specially designed items as brackets, holders, retainers, etc. Excluded from classes in this group are such hardware items as screws (Class 5305), bolts (Class 5306), studs (Class 5307), washers (Class 5310), rivets (Class 5320), and other common items indexed to specific classes, other than in Group 59. The FSC indexes and structure will govern the classification of items used on or with mounting hardware cited above.

Frequently Asked Questions(FAQ) for Federal Supply Class 5920

Supply Items Included in Federal Supply Class 5920

Stock Items From Supply Class 5920 Page 2 of 7