Switches
Federal Supply Class (FSC): 5930
NATO Supply Classification Class (NSC): 5930
Group Description: Electrical and Electronic Equipment Components
Federal Supply Group (FSG): 59
NATO Supply Classification Group (NSG): 59
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Includes Rotary, Knife, Toggle, Push Button, Mercury, Thermostatic, and Differential Pressure Switches.
Excludes Switchgear.
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 5930
- What is Federal Supply Class 5930?
- FSC 5930 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5930) in the USA for supply items codified in the category of Switches.
- What is NATO Supply Classification Class 5930?
- NSC 5930 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5930 in the USA) for supply items codified in the category of Switches.
- Which Federal Supply Group is FSC 5930 in?
- FSC 5930 is in Federal Supply Group (FSG) 59 which contains .
- Which NATO Supply Classification Group is NSC 5930 in?
- NSC 5930 is in NATO Supply Classification Group (NSG) 59 which contains .
Supply Items Included in Federal Supply Class 5930
- What is a Knife Switch? 249 Items
- A Knife Switch (SWITCH,KNIFE) is a switch using hinged blades for contacts which enter or embrace fixed contact clips. Includes switches which have a movable blade which swivels to permit contact with each of several fixed contact clips. See also SWITCH, BOX.
- What is a Hook Switch? 37 Items
- A Hook Switch (SWITCH,HOOK) is a switch in which the integral external actuator is hook shaped or lipped so that the hanging of an object on the actuator will operate the switch. Excludes sensitive switch with adapters.
- What is a Mercury Switch? 202 Items
- A Mercury Switch (SWITCH,MERCURY) is a switch in which a mercury pool is used to bridge fixed contacts when their inclosing sealed capsule is tilted. Do not use if switch has an actuator, such as lever, push button, toggle, and the like. See SWITCH (as modified). For items in which a contact may be moved into a mercury pool by a magnetic field, see SWITCH, REED.
- What is a Centrifugal Switch? 240 Items
- A Centrifugal Switch (SWITCH,CENTRIFUGAL) is a switch which is actuated by centrifugal force.
- What is a Foot Switch? 668 Items
- A Foot Switch (SWITCH,FOOT) is a switch with a pedal which is actuated by the foot. For items not provided with a pedal, see switch (as modified). Excludes SWITCH, BEAM SELECTING, HEADLIGHT.
- What is a Lever Switch? 3609 Items
- A Lever Switch (SWITCH,LEVER) is a switch which is externally actuated by a lever and whose contacts open and close at a speed proportional to the speed at which the lever is operated. Includes pile-up lever switches and wafer lever switches. Excludes SWITCH, TOGGLE; SWITCH, ROTARY; SWITCH, KNIFE; SWITCH, SENSITIVE; SWITCH, BOX; and SWITCH, MERCURY.
- What is a Toggle Switch? 22832 Items
- A Toggle Switch (SWITCH,TOGGLE) is a switch which is externally actuated by a lever and whose contacts open and close with an instantaneous (snap) action; includes items having one or more momentary positions. Includes switches (snap action) which use mercury to bridge contacts, and assemblages of complete switches (snap action) having common actuators. Excludes SWITCH, LEVER; SWITCH, ROTARY; SWITCH, KNIFE; SWITCH, SENSITIVE; and SWITCH, BOX.
- What is a Pressure Switch? 17642 Items
- A Pressure Switch (SWITCH,PRESSURE) is a switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. Excludes BAROSWITCH; SWITCH, PRESSURE-THERMOSTATIC; and SWITCH, SENSITIVE.
- What is a Sensitive Switch? 14027 Items
- A Sensitive Switch (SWITCH,SENSITIVE) is a switch with a quick-acting mechanism actuated by a highly delicate tactile contact. Includes membrane switch. Excludes SWITCH, FLEXIBLE; SWITCH, PRESSURE; and SWITCH, THERMOSTATIC.
- What is a Slide Switch? 1537 Items
- A Slide Switch (SWITCH,SLIDE) is a switch designed to be actuated by the sliding of a button, bar, or knob.
- What is a Lock Switch? 1901 Items
- A Lock Switch (SWITCH,LOCK) is a switch which is externally actuated by a key designed to be inserted into a switch, or actuated by a predetermined combination dial setting(s). Excludes SWITCH, LOCK, IGNITION.
- What is an Interlock Switch? 876 Items
- An Interlock Switch (SWITCH,INTERLOCK) is an item which completes or interrupts the connections in one or more electrical circuits. Its electrical elements consist of separate parts designed to be mounted respectively on a frame and a door, drawer, or cover, It acts as a safety device to open a circuit when the door or drawer is opened or the cover removed. It does not include devices of which a complete switch with an actuator is one of the parts; for such devices, use SWITCH (as modified). Excludes SWITCH, MERCURY; and SWITCH, REED.
- What is a Pull Switch? 286 Items
- A Pull Switch (SWITCH,PULL) is a switch which is actuated by a device, such as a pull rod or a chain which requires pulling for each action. Excludes LIGHT-SWITCH ASSEMBLY and SWITCH, SENSITIVE.
- What is a Push Switch? 49393 Items
- A Push Switch (SWITCH,PUSH) is a switch that is externally actuated by a device such as a push rod or button, which requires pushing for each actuation. The action may be momentary, with mechanical return. The actuating device may or may not be an integral part of the switch. The item may include provisions for mounting indicating lamp(s) or light emitting diode(s) in the actuator. Includes items consisting of individually separable switches that are physically interlocked, that have a common actuator, or are electrically connected. Excludes LIGHT-SWITCH; LIGHT-SWITCH ASSEMBLY; SWITCH, BEAM SELECTING, HEADLIGHT; SWITCH, FOOT; SWITCH, INTERLOCK; SWITCH, PRESSURE; SWITCH, PUSH-PULL; SWITCH, SENSITIVE and SWITCH ASSEMBLY. For devices which start, stop, reverse, select and/or regulate the speed of a motor, see STARTER, MOTOR and CONTROLLER, MOTOR.
- What is a Push-Pull Switch? 1219 Items
- A Push-Pull Switch (SWITCH,PUSH-PULL) is a switch which is actuated in one direction by pushing and in the opposite direction by pulling. Excludes LIGHT-SWITCH ASSEMBLY.
- What is a Trigger Switch? 252 Items
- A Trigger Switch (SWITCH,TRIGGER) is a switch which is actuated by pulling a trigger. The switching device with trigger action may be a separate unit but is usually mounted or designed to be mounted in a pistol-grip handle. It may include provisions for locking the switch in the "ON" position. Excludes GRIP ASSEMBLY, CONTROLLER, AIRCRAFT.
- What is a Thermostatic Switch? 19386 Items
- A Thermostatic Switch (SWITCH,THERMOSTATIC) is a switch that is actuated by changes in ambient temperature. Excludes CIRCUIT BREAKER; CONTROL, TEMPERATURE (as modified); FUSE (as modified); PROTECTOR, THERMAL-OVERLOAD, ELECTRICAL MOTOR; RELAY, THERMAL; and THERMOSTAT, FLOW CONTROL. See also CONTROL, TEMPERATURE (as modified) and REGULATOR, TEMPERATURE (as modified).
- What is a Switch Drive Subassembly? 356 Items
- A Switch Drive 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 switch drive but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
- What is a Switch Subassembly? 4608 Items
- A Switch Subassembly is two or more different types of items having a common mounting or mounted on each other which together forms a portion of a switch but which in itself is not a complete functioning item and cannot be assigned a more definite item name. See also SWITCH SECTION, ROTARY and CONTACT ASSEMBLY, ELECTRICAL.
- What is an Electrical Switch Cover? 1474 Items
- An Electrical Switch Cover (COVER,ELECTRICAL SWITCH) is excludes BOOT, DUST AND MOISTURE SEAL; COVER, SWITCH TERMINAL; GUARD, SWITCH; and PLATE, WALL, ELECTRICAL.
- What is a Switch Assembly? 9713 Items
- A Switch Assembly is two or more complete switches mounted on each other or having a common mounting the major function of which is to hold the switches. Each switch, as a separable item, must be capable of functioning in accordance with its own name. Excludes items consisting of individually separable switches which are physically interlocked (e.g., one button returns when the other is pushed), which have a common actuator, or are electrically connected. See also SWITCH, PUSH.
- What is an Electrical Switch Rotor? 262 Items
- An Electrical Switch Rotor (ROTOR,ELECTRICAL SWITCH) is an item designed as the rotating part of an electrical switch.
- What is an Electrical Switch Stop? 226 Items
- An Electrical Switch Stop (STOP,ELECTRICAL SWITCH) is an item designed to restrict the movement of an electrical switch actuator, Excludes DETENT, SWITCH; and LATCH, SWITCH.
- What is an Interlock Control? 96 Items
- An Interlock Control (CONTROL,INTERLOCK) is a device that determines the mode of operation of an interlock system.
- What is an Inertia Switch? 113 Items
- An Inertia Switch (SWITCH,INERTIA) is a switch which is specifically designed to be actuated by an abrupt change in velocity of the item upon which it is mounted.
- What is a Switch Latch? 188 Items
- A Switch Latch (LATCH,SWITCH) is an item which is an auxiliary part of a switch and designed to hold the switch in a position into which it has manually or mechanically been thrown. See also DETENT, SWITCH; and STOP, ELECTRICAL SWITCH.
- What is a Switch Detent? 282 Items
- A Switch Detent (DETENT,SWITCH) is a mechanism which is a part of or may be added to a switch to establish predeternimed switching positions. See also STOP, ELECTRICAL SWITCH and LATCH, SWITCH.
- What is a Rotary Switch? 56892 Items
- A Rotary Switch (SWITCH,ROTARY) is a switch actuated by a definite angular rotation of the switch shaft about its axis. For items having rated actuation travel and pressure characteristics, see SWITCH, SENSITIVE. Excludes RELAY, ROTARY; SWITCH, STEPPING; and SWITCH, TELEPHONE (as modified).
- What is an Electrical Switch Actuator Bar? 290 Items
- An Electrical Switch Actuator Bar (BAR,ACTUATOR,ELECTRICAL SWITCH) is an item which is long in proportion to its other dimensions and is used as an electrical switch actuator.
- What is a Switch Guard? 2674 Items
- A Switch Guard (GUARD,SWITCH) is a framework fabricated of rigid material designed to protect a switch against external damage and/or prevent inadvertent throwing of the switch. Excludes switch locking devices.
- What is an Electrical Switch Roller? 70 Items
- An Electrical Switch Roller (ROLLER,ELECTRICAL SWITCH) is a machined pin, rod or cylinder which is used in the mechanism of an electrical switch to reduce friction and wear.
- What is an Electrical Switch Yoke? 46 Items
- An Electrical Switch Yoke (YOKE,ELECTRICAL SWITCH) is an item designed to join together two electrical switches or parts of a switch so as to cause the joined items to function as a unit.
- What is a Box Switch? 1418 Items
- A Box Switch (SWITCH,BOX) is a switch designed with its actuator extending from the box which incloses the circuit elements. The door or cover of the box is designed so that it may be readily opened or removed, thus providing relatively easy access to the circuit elements. The item is commonly designated as a safety switch or entrance switch. May be fusible and may have interlocking device.
- What is a Tilt Switch? 240 Items
- A Tilt Switch (SWITCH,TILT) is a switch which is actuated upon angular displacement from a predetermined plane. Does not include SWITCH, SENSITIVE and SWITCH, MERCURY.
- What is a Switch Actuator Adapter? 1684 Items
- A Switch Actuator Adapter (ADAPTER,SWITCH ACTUATOR) is an adapter designed to be mounted on a switch so that the switch may be opened or closed by an action of force not adapted to directly actuate the integral switching mechanism. Does not include knobs. See also EXTENSION, SHAFT.
- What is a Rotary Switch Control? 493 Items
- A Rotary Switch Control (CONTROL,ROTARY SWITCH) is an item which determines the mode of operation of an integral rotary switch. It is controlled manually or by a CONTROL, REMOTE SWITCHING.
- What is a Pressure-Thermostatic Switch? 303 Items
- A Pressure-Thermostatic Switch (SWITCH,PRESSURE-THERMOSTATIC) is a switch which is actuated by changes of pressure (vacuum) on any gas or liquid and by changes in ambient temperature. The contacts for the temperature and pressure sensitive elements may be common.
- What is a Rotary Switch Section? 2161 Items
- A Rotary Switch Section (SWITCH SECTION,ROTARY) is an item consisting of electrical contacts mounted on an insulated plate which together form a section of a switch or relay. It includes both rotor and stator but does not include drive or actuating mechanism.
- What is a Switch Handle? 936 Items
- A Switch Handle (HANDLE,SWITCH) is the detachable portion of an actuator. It is usually attached at an angle to the pivoted axis of the actuator. May include a radial lever as an integral or detachable part. Excludes KNOB; and HANDWHEEL.
- What is a Sensitive Switch Housing? 251 Items
- A Sensitive Switch Housing (HOUSING,SENSITIVE SWITCH) is an item designed to inclose a basic sensitive switch providing characteristics features such as dust-proof, explosion-proof, watertight, and the like, and having provisions for actuating the switch. Excludes BOX, SWITCH.
- What is a Switch Box? 2008 Items
- A Switch Box is an enclosure which includes, mounts, and protects one or more electrical switches. It is designed to have a cover which completely encloses the switch(es) and its (their) actuator(s). The cover may or may not be included. May also include mounting hardware, lock(s), conduit fittings, and terminal board(s) used specifically for terminating the switch(es). 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 switches, see JUNCTION BOX. Excludes CONTROL (2) (as modified); PANEL, POWER DISTRIBUTION; SWITCH, BOX; and SWITCH ASSEMBLY.
- What is a Water Switch? 42 Items
- A Water Switch is an item consisting of two electrodes which pass current when immersed in salt water. It may have an electrical connection cable.
- What is a Dust And Moisture Seal Boot? 1296 Items
- A Dust And Moisture Seal Boot (BOOT,DUST AND MOISTURE SEAL) is a flexible, nonmetallic item designed to prevent entry of dust, moisture and other contaminants into critical areas around shafts, levers, electrical wires and hoses. Sealing may be either static or dynamic. The item may include mounting hardware (support plates, clamps and the like). Excludes BELLOWS, PROTECTION; GROMMET, NONMETALLIC; and CABLE NIPPLE, ELECTRICAL. See also CAP, ELECTRICAL; CAP, PROTECTIVE, DUST AND MOISTURE SEAL; and SHIELD, ELECTRICAL CONNECTOR.
- What is a Nonluminous Switch Actuator Cover? 103 Items
- A Nonluminous Switch Actuator Cover (COVER,SWITCH ACTUATOR,NONLUMINOUS) is a clip designed to fit on the end of a "bat" or "ball" type actuator of a switch or switch type circuit breaker. Its function is to cover luminous ends to prevent radiation, and/or to mark or identify when certain switches or circuits should not be used. For similar items having fluorescent or radioactive type inserts, use MARKER, SELF-LUMINOUS.
- What is a Pressure Switch Diaphragm? 249 Items
- A Pressure Switch Diaphragm (DIAPHRAGM,PRESSURE SWITCH) is a maintenance item for a SWITCH, PRESSURE. It converts pressure into motion for opening or closing the switch contacts.
- What is a Stepping Switch? 410 Items
- A Stepping Switch (SWITCH,STEPPING) is an electromagnetically actuated switch having contact wipers which are successively rotated over fixed bank contacts. The contact wipers are progressively advanced over the fixed bank contacts through a repetitive series of stepping operations. The stepping operation may be a continuous forward rotation acting through 360 degrees to return to its normal unoperated position or it may be designed to include an electromagnetic and/or mechanical means for releasing and resetting the switch to its released position for a subsequent operation. The contact wipers may be mechanically held in contact with the fixed bank contacts after the armature of the actuating coil has released. The switch may be released at the end of its travel or at any intermediate position. It includes items designed with two electromagnetic actuators that enable the switch to operate in either direction. For items having the dual function of a switch and a relay assembled together on a common mounting, see RELAY-SWITCH. For other than electromagnetically actuated switches whose contact wipers are manually rotated over fixed bank contacts, see SWITCH, ROTARY. Excludes RELAY, ROTARY and SWITCH, TELEPHONE (as modified).
- What is a Reed Switch? 688 Items
- A Reed Switch (SWITCH,REED) is an item actuated by an external magnetic field and having two or more contacts inclosed in a sealed capsule. Do not use if switch has an actuator, such as a lever, push button, toggle, and the like. See SWITCH (as modified). For items provided with an operating coil, use RELAY (as modified). It includes items in which a contact may be moved into a mercury pool by a magnetic field.
- What is a Proximity Switch? 2702 Items
- A Proximity Switch (SWITCH,PROXIMITY) is a switch designed to perform the function of opening and/or closing one or more electrical circuits. The switching function is accomplished by means of separable contacts, semiconductor devices, or a combination of separable contacts and semiconductor devices. The item functions in response to electrical changes in its internal circuit caused by capacitance, inductance, or magnetic flux changes. It is activated by permanent magnets, metallic materials, or nonmetallic materials which come within its sensing range. For sensing switches which respond to changes other than capacitance, inductance, or magnetic flux, see SWITCH, AIRFLOW; SWITCH, CENTRIFUGAL; SWITCH, INERTIA; SWITCH, PRESSURE; SWITCH, PRESSURE-THERMOSTATIC; SWITCH, THERMOSTATIC; and SWITCH, TILT.
- What is a Flexible Switch? 142 Items
- A Flexible Switch (SWITCH,FLEXIBLE) is a switch that is externally actuated by the application of pressure at any point along its operating surface which encloses parallel electrical conductors. It may have one or more sets of parallel conductors. Excludes SWITCH, PUSH and SWITCH, SENSITIVE.
- What is a Flow Switch? 2391 Items
- A Flow Switch (SWITCH,FLOW) is a switch which is specifically designed to operate by the influence of a gaseous, liquid, or solid media velocity on its actuator.
- What is a Liquid Level Switch? 1692 Items
- A Liquid Level Switch (SWITCH,LIQUID LEVEL) is a switch which is actuated by a float or sensing device(s) to control liquid level and/or actuate visual or audible warning systems. It may include a relay controlled by the switch element. Excludes TRANSMITTER,LIQUID QUANTITY.
- What is an Electrical Switch Retainer? 2576 Items
- An Electrical Switch Retainer (RETAINER,ELECTRICAL SWITCH) is an item designed to position and/or restrain the movement of one or more switches in their normal operating positions.
- What is a Solid State Switch? 401 Items
- A Solid State Switch (SWITCH,SOLID STATE) is a switch designed to perform the function of opening and/or closing of one or more electrical circuits. In lieu of separable contacts, the switching function is accomplished by means of an arrangement of semiconductors and passive circuit devices. The item functions in response to electrical changes in its own internal circuit caused by the approach of permanent magnets, metals, capacitance or inductance. The form of the item and kind of actuation (push, toggle and rotary action) may be identical to that of switches having separable contacts.
- What is a Switch Shield? 88 Items
- A Switch Shield (SHIELD,SWITCH) is an item specifically designed to be placed around or over one or more SWITCH (as modified) in order to prevent or reduce electrical and/or mechanical interference.
- What is an Electronic Switch? 2548 Items
- An Electronic Switch (SWITCH,ELECTRONIC) is an electronic device which provides for the transfer of the electrical signal input from one component to another, or between two or more components. It may also provide a continuous sequence of switching or sampling of a number of circuits. See also GATE, ELECTRONIC.
- What is a Programming Switch? 39 Items
- A Programming Switch (SWITCH,PROGRAMMING) is an item with a motor-driven program switch which, contrary to pulse-actuated stepping mechanisms, is permanently driven. Program mechanisms are required in applications where the program flow must be free from control pulses. For pulse-driven switching mechanisms designed for stepping operations see SWITCH, STEPPING.
- What is a Push Button Set? 124 Items
- A Push Button Set is a group of two or more push buttons (the detachable portion of a switch, circuit breaker, controller or the like). They may be any shape or design and may include detachable tops, marked with letter(s), numeral(s), or other characters. Excludes KNOB, HANDLE, AND KEYTOP, KEYBOARD.
- What is a Dummy Switch? 18 Items
- A Dummy Switch is an item occupying the space of an electrical switch, without having its functions.
- What is a Switch Actuator Arm? 1192 Items
- A Switch Actuator Arm (ARM,SWITCH ACTUATOR) is an arm designed to be mounted on a switch mechanism shaft.
- What is a Switch Key? 823 Items
- A Switch Key (KEY,SWITCH) is a device intended for insertion into the actuator of a switch to lock the switch in either an on or off position.
- What is a Push Button? 13963 Items
- A Push Button is an item which constitutes the detachable portion of a switch, circuit breaker, controller, motor starter actuator or items equipped with a key type station selector device etc, upon which the pushing pressure is applied to operate the item. It may be of any shape or design and may include a detachable top, marked with letter(s), numeral(s), or other characters, and/or a plunger or rod as an integral or detachable part. Excludes KNOB; HANDLE, SWITCH; BAR ACTUATOR, ELECTRICAL SWITCH and KEYTOP, KEYBOARD.
- What is a Code Indicating Wheel Switch? 2534 Items
- A Code Indicating Wheel Switch (SWITCH,CODE INDICATING WHEEL) is a switch which is externally actuated by a thumbwheel and/or pushbutton. A legend or message is visually displayed at each position of the indicating wheel which corresponds to electrically coded output. Electrically coded output is achieved by rotating a set of brush contacts permanently attached to the code indicating wheel, against a stationary commutator which is usually a printed wiring board having electrical pads or contacts which are interconnected by the rotating brush contacts. May have additional electrical components (such as resistors, capacitors, diodes) premounted on that portion of printed wiring board which extends beyond the back of switch housing.
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