Relays and Solenoids from United Kingdom (UK)

Question 1

What is Federal Supply Class 5945?

Accepted Answer

FSC 5945 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5945) in the USA for supply items codified in the category of Relays and Solenoids.

Question 2

What is NATO Supply Classification Class 5945?

Accepted Answer

NSC 5945 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5945 in the USA) for supply items codified in the category of Relays and Solenoids.

Question 3

Which Federal Supply Group is FSC 5945 in?

Accepted Answer

FSC 5945 is in Federal Supply Group (FSG) 59 which contains Electrical and Electronic Equipment Components.

Question 4

Which NATO Supply Classification Group is NSC 5945 in?

Accepted Answer

NSC 5945is in NATO Supply Classification Group (NSG) 59 which contains Electrical and Electronic Equipment Components.

Question 5

What is an Electrical Solenoid?

Accepted Answer

An Electrical Solenoid (SOLENOID,ELECTRICAL) is an item consisting of one or more coils surrounding an iron core. The coil(s) and the core are moveable in relation to each other. The axial or rotary movement is a result of the magnetic flux of the coil. It is designed to convert electrical energy into mechanical energy. It does not include switch contacts. See also RELAY, ELECTROMAGNETIC, and ELECTROMAGNETIC ACTUATOR.

Question 6

What is a Relay Assembly?

Accepted Answer

A Relay Assembly is two or more RELAYS (as modified) having a common mounting or mounted on each other. If item contains electronic components see ELECTRONIC COMPONENT ASSEMBLY. Excludes AMPLIFIER-RELAY ASSEMBLY; RELAY ASSEMBLY GROUP; and RELAY-SWITCH.

Question 7

What is a Relay Subassembly?

Accepted Answer

A Relay 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 relay, but which in itself is not a complete functioning item and cannot be assigned a more definite item name. Excludes CONTACT ASSEMBLY, ELECTRICAL and CONTACT SET, RELAY.

Question 8

What is an Electromagnetic Actuator?

Accepted Answer

An Electromagnetic Actuator is an item which develops mechanical energy as a result of momentary or intermittent impulses in a Coil (1) or ELECTROMAGNET and which is used to operate such items as a ratchet or signaling device. For items having a core axially set within a coil and in which the coil and core move with respect to each other, see SOLENOID, ELECTRICAL. See also MOTOR (as modified) and ANNUNCIATOR.

Question 9

What is a Motor Driven Relay?

Accepted Answer

A Motor Driven Relay (RELAY,MOTOR DRIVEN) is a relay which is actuated by an electrical motor and automatically resets upon interruption of supply current to the relay. Does not include a "switch" that is motor driven.

Question 10

What is a Thermal Relay?

Accepted Answer

A Thermal Relay (RELAY,THERMAL) is a relay switch which is actuated by the effect of internal heat generated by the current in its energizing circuit. For items actuated by ambient, rather than internal temperature changes, see SWITCH, THERMOSTATIC.

Question 11

What is a Meter Movement Relay?

Accepted Answer

A Meter Movement Relay (RELAY,METER MOVEMENT) is a relay which operates by means of a D'Arsonval or similar meter type actuation.

Question 12

What is a Solenoid Assembly?

Accepted Answer

A Solenoid Assembly is two or more SOLENOID, ELECTRICAL on a common mounting or mounted on each other.

Question 13

What is a Thermal Flasher?

Accepted Answer

A Thermal Flasher (FLASHER,THERMAL) is an item designed to complete, interrupt or change the connections in one or more electrical lighting circuits in accordance with a predetermined time cycle. It is actuated by the effect of heat generated by current passing through its circuit(s). Excludes CONTROL, DIRECTIONAL SIGNAL LIGHT, AUTOMOTIVE, and SWITCH THERMOSTATIC. See also FLASHER, SOLID STATE.

Question 14

What is a Relay Armature?

Accepted Answer

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

Question 15

What is a Relay Contact Set?

Accepted Answer

A Relay Contact Set (CONTACT SET,RELAY) is a grouping of two or more separate relay contacts.

Question 16

What is an Electronic Chopper?

Accepted Answer

An Electronic Chopper (CHOPPER,ELECTRONIC) is an electromechanical or electronic (includes solid state semiconductor items) device designed to convert an electrical signal into a modified square wave output signal. For items excited by an alternating current, the output signal is the same frequency as, and bears a definite phase relationship to, the excitation voltage. For those electronic items designed to operate on direct current only, the output frequency of the item is dependent upon the inherent properties of the item, or the internal or external circuit constants, or the applied driving coil voltage impressed on the input signal. For an electromechanical item whose coil is designed for direct current only, see VIBRATOR, INTERRUPTER and VIBRATOR, SELF-RECTIFYING.

Question 17

What is a Solenoid Plunger?

Accepted Answer

A Solenoid Plunger (PLUNGER,SOLENOID) is a metallic item used as a core which reacts to the magnetic flux produced by a surrounding electrical coil(s). It travels on a longitudinal plane with reciprocating motion to perform a mechanical function. It may have facilities for attaching mechanical and/or electrical items such as linkage and/or contacts. It is a maintenance part for such items as RELAY, SOLENOID; RELAY-SOLENOID, ENGINE STARTER, ELECTRICAL; and SOLENOID, ELECTRICAL.

Question 18

What is a Resonant Reed Relay?

Accepted Answer

A Resonant Reed Relay (RELAY,RESONANT REED) is an item consisting of one or more metallic reeds, mechanically resonant at a specific frequency and mounted in a permanent magnetic field. Actuation of the relay occurs when an alternating current signal at the resonant frequency of one of the reeds is introduced into a field winding. Excludes RELAY, ELECTROMAGNETIC.

Question 19

What is a Reed Relay?

Accepted Answer

A Reed Relay (RELAY,REED) is a relay consisting of an energizing coil and a metallic reed switch mechanism. The reeds serve as both core and contacts, which are not hinged or pivoted and which move by flexure when acted upon by a magnetic field induced by energization of the coil. It may also include a biasing magnet. The biasing magnet, either aids or opposes the movement of the reeds and the opening or closing of the contacts. For items in which actuation is dependent on the resonant frequency of the reeds see RELAY, RESONANT REED. Excludes RELAY, ELECTROMAGNETIC.

Question 20

What is a Hybrid Relay?

Accepted Answer

A Hybrid Relay (RELAY,HYBRID) is a self-contained device that performs the function of opening or closing an electrical circuit in response to electrical changes in an external circuit. It consists of a combination of semiconductor and passive circuit devices, which in turn control an integral electro-magnetic relay. Excludes relays which employ diodes, rectifiers or other passive devices to achieve contact protection or coil modification. Excludes RELAY, SOLID STATE.

Question 21

What is a Solid State Relay?

Accepted Answer

A Solid State Relay (RELAY,SOLID STATE) is a self-contained device that performs the function of opening or closing an electrical circuit in response to electrical changes in an external circuit. In lieu of separable contacts and their actuator(s), the switching function is accomplished by means of an arrangement of semiconductors and passive circuit devices. The device is designed to have electrical isolation between control circuit and output circuit. Excludes RELAY, HYBRID.

Question 22

What is an Electromagnetic Relay?

Accepted Answer

An Electromagnetic Relay (RELAY,ELECTROMAGNETIC) is a relay which is actuated by the effect of a magnetic field developed by the current in its energizing coil(s). Includes solenoid and armature types. Excludes CONTACTOR, MAGNETIC; RELAY, METER MOVEMENT; RELAY, MOTOR DRIVEN; RELAY, REED; RELAY, RESONANT REED; RELAY, ROTARY; and SWITCH, STEPPING.

Question 23

What is a Solid State Flasher?

Accepted Answer

A Solid State Flasher (FLASHER,SOLID STATE) is an item designed to complete, interrupt or change the connections in one or more electrical lighting circuits in accordance with a predetermined time cycle. It is actuated by means of an arrangement of semiconductors and/or passive circuit devices. Excludes CONTROL, DIRECTIONAL SIGNAL LIGHT, AUTOMOTIVE and SWITCH THERMOSTATIC. See also FLASHER, THERMAL.

Question 24

What is an Electrical Relay Retainer?

Accepted Answer

An Electrical Relay Retainer (RETAINER,ELECTRICAL RELAY) is an item specifically designed to position and/or restrain the movement of one or more electrical relays in their normal mounting position. It may also include provisions for mounting terminal boards, connectors, and like items. Excludes CLIP, ELECTRICAL and CLAMP, LOOP.

Relays and Solenoids - United Kingdom (UK)

Federal Supply Class (FSC): 5945

NATO Supply Classification Class (NSC): 5945

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

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

Items Managed by United Kingdom (UK) - NCB is 99

Page 7 of 59

NSN Format for Relays and Solenoids
Codified by United Kingdom

Frequently Asked Questions(FAQ) for Federal Supply Class 5945

Supply Items Included in Federal Supply Class 5945

Stock Items From Supply Class 5945 Page 7 of 59