What is Federal Supply Class 5925?

FSC 5925 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5925) in the USA for supply items codified in the category of Circuit Breakers.

What is NATO Supply Classification Class 5925?

NSC 5925 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5925 in the USA) for supply items codified in the category of Circuit Breakers.

Which Federal Supply Group is FSC 5925 in?

FSC 5925 is in Federal Supply Group (FSG) 59 which contains Electrical and Electronic Equipment Components.

Which NATO Supply Classification Group is NSC 5925 in?

NSC 5925 is in NATO Supply Classification Group (NSG) 59 which contains Electrical and Electronic Equipment Components.

What is a Circuit Breaker Contact Set?

A Circuit Breaker Contact Set (CONTACT SET,CIRCUIT BREAKER) is a grouping of two or more separate circuit breaker contacts. Excludes CONTACT ASSEMBLY, ELECTRICAL.

What is a Circuit Breaker?

A Circuit Breaker is a device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see RELAY (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see RELAY-SWITCH. Excludes CIRCUIT BREAKER BOX and magneto "breaker" assemblies. See also SWITCH (as modified); and CONTROLLER.

What is a Circuit Breaker Subassembly?

A Circuit Breaker Subassembly is two or more different types of items, having a common mounting or mounted on each other, which together form a portion of a circuit breaker, but which in itself is not a complete functioning item and cannot be assigned a more definite item name. Excludes COIL, ELECTRICAL; THERMAL RELEASE, CIRCUIT BREAKER; and TRIPPER, CIRCUIT BREAKER.

What is a Circuit Breaker Armature?

A Circuit Breaker Armature (ARMATURE,CIRCUIT BREAKER) is an item which is the pivoted or spring-mounted ferromagnetic portion of a circuit breaker, and which moves to break and/or make an electrical circuit in response to electromagnetic changes.

What is a Circuit Breaker Thermal Release?

A Circuit Breaker Thermal Release (THERMAL RELEASE,CIRCUIT BREAKER) is an item containing fusible material which melts when the temperature reaches a predetermined value caused by an overload in an electrical circuit. The melting (fusion) of the material mechanically causes contacts to open and/or close. The item may include an integral heating element, such as a coil or resistor, but does not include contacts. Excludes COIL, CIRCUIT BREAKER; HEATER, THERMAL RELEASE; and TRIPPER, CIRCUIT BREAKER.

What is a Circuit Breaker Tripper?

A Circuit Breaker Tripper (TRIPPER,CIRCUIT BREAKER) is an electromechanical device which releases the holding mechanism and permits the contacts of a circuit breaker to open. It is a replacement part of a circuit breaker. Does not include relays. See also THERMAL RELEASE, CIRCUIT BREAKER.

What is a Circuit Breaker Box?

A Circuit Breaker Box is an enclosure which includes, mounts, and protects one or more circuit breakers. It is designed for and may include a cover and such accessories as mounting hardware, brackets, and conduit fittings. May include terminal boards and/or bus conductors used as a convenience for terminating the circuit breakers. May include handle tie bars. It is usually used as a load center for the protection of certain electrical devices such as water heaters, motors, etc., or as a service center for homes or offices. For boxes which include only switches, jacks, fuseholders, terminals and/or terminal boards or fuseholders, or any combination of these devices, see SWITCH BOX; JACK BOX; TERMINAL BOX; and DISTRIBUTION BOX. For boxes designed to mount and protect but do not include circuit breakers, see CIRCUIT BREAKER BOX SUBASSEMBLY. See also INTERCONNECTING CABINET; PANEL, POWER DISTRIBUTION; JUNCTION BOX; and CABINET, ELECTRICAL EQUIPMENT.

What is a Ground Fault Interrupter?

A Ground Fault Interrupter (INTERRUPTER,GROUND FAULT) is an electrical safety device designed for insertion in a power distribution circuit to provide protection against serious injury or death caused by contact with damaged or defective electrical equipment. It disconnects the ungrounded conductor(s) when its integral circuitry senses an undesirable current flow to earth (ground). It includes a reset feature and may have a test facility. It may be designed for installation in an electrical panel or box, or may be a portable unit with its own enclosure. May include switches, circuit breakers, fuses, and the like; portable units may have connecting cables. Excludes overcurrent protective devices which also provide a ground fault sensing and interrupting capability. See also CIRCUIT BREAKER.

What is a Circuit Breaker Box Subassembly?

A Circuit Breaker Box Subassembly is an enclosure which is designed to mount and protect one or more circuit breakers. It does not include the circuit breakers. It is designed for and may include a cover and accessories as mounting hardware, brackets, and conduit fittings. May include terminal boards and/or bus conductors used as a convenience for terminating the circuit breakers. For items which include circuit breakers, see CIRCUIT BREAKER BOX. For boxes not designed to mount and protect circuit breakers, see JUNCTION BOX.

What is a Circuit Breaker Shield?

A Circuit Breaker Shield (SHIELD,CIRCUIT BREAKER) is an item specifically designed to be placed around or over one or more CIRCUIT BREAKER in order to prevent or reduce electrical and/or mechanical interference.

What is a Circuit Breaker Locking Device?

A Circuit Breaker Locking Device (LOCKING DEVICE,CIRCUIT BREAKER) is an item of various shapes, having an integral locking device or facilities to accommodate an external locking device, which is designed to prevent unauthorized actuation of a CIRCUIT BREAKER. Excludes items designed to protect the actuator from damage or inadvertant throwing, see GUARD, SWITCH.

What is a Circuit Breaker Detent?

A Circuit Breaker Detent (DETENT,CIRCUIT BREAKER) is an item designed to prevent the unintentional manual activation of a CIRCUIT BREAKER (as modified) by mechanically locking the release mechanism. Excludes COVER, CIRCUIT BREAKER.

What is a Circuit Breaker Trip Device?

A Circuit Breaker Trip Device (TRIP DEVICE,CIRCUIT BREAKER) is a device used to trip the circuit breakers requiring an ac voltage by using the stored energy in a capacitor.

What is a Circuit Breaker Remote Control?

A Circuit Breaker Remote Control (REMOTE CONTROL,CIRCUIT BREAKER) is a device designed to remotely control a CIRCUIT BREAKER (as modified). It is generally mounted on a rail and installed on an electric panel or in a control box. It may include electrical cabling and external connections. The device may be controlled locally.

Circuit Breakers

Federal Supply Class (FSC): 5925

NATO Supply Classification Class (NSC): 5925

Group Description: Electrical and Electronic Equipment Components

Federal Supply Group (FSG): 59

NATO Supply Classification Group (NSG): 59

Page 1 of 190

NSN Format for Circuit Breakers

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

FSC 5925 Circuit Breakers

Includes Circuit Breakers and Cutouts.

Excludes Relays.

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.

Additional Information for Circuit Breakers

NATO Supply Class 5925 is specifically designated for circuit breakers. Circuit breakers are devices used to protect electrical circuits from overloads or short circuits by interrupting the flow of current. They are essential components in electrical systems to ensure the safety and proper functioning of equipment.

Circuit breakers in this supply class are categorized based on their specific characteristics, such as voltage rating, current rating, and trip characteristics. These characteristics determine the circuit breaker's ability to handle different electrical loads and respond to different fault conditions.

NATO Supply Group 59 encompasses electrical and electronic equipment components. This group includes a wide range of items used in electrical and electronic systems, such as connectors, switches, relays, resistors, capacitors, and more. Circuit breakers, as part of this group, play a crucial role in protecting these systems from damage caused by excessive current or faults.

When procuring circuit breakers or other electrical and electronic equipment components within NATO, it is important to refer to the NATO Supply Classification System (NSCS). The NSCS provides a standardized classification system to facilitate procurement, logistics, and inventory management within NATO member countries.

By using the NATO Supply Class 5925 for circuit breakers, you can ensure that you are sourcing the appropriate equipment for your electrical systems within the NATO framework.

Additional Information for Circuit Breakers

NSN by Country

Frequently Asked Questions(FAQ) for Federal Supply Class 5925

Supply Items Included in Federal Supply Class 5925

Stock Items From Supply Class 5925 Page 1of 190