Moeller - Marking of electrical equipment for North America - Class designation code letter to ANSI Y32.2/IEEE 315, 315 A

Class designation code letter to ANSI Y32.2/IEEE 315, 315 A [t-head1]


Code letter		Device or Function
A		Separate Assembly
B		Induction Machine, Squirrel Cage Induction Motor Synchro, General Control transformer Control transmitter Control Receiver Differential Receiver Differential Transmitter Receiver Torque Receiver Torque Transmitter Synchronous Motor Wound-Rotor Induction Motor or Induction Frequency Convertor
BT		Battery
C		Capacitor Capacitor, General Polarized Capacitor Shielded Capacitor


CB		Circuit-Breaker (all)
D, CR		Diode Bidirectional Breakdown Diode Full Wave Bridge Rectifier Metallic Rectifier Semiconductor Photosensitive Cell Semiconductor Rectifier Tunnel Diode Unidirectional Breakdown Diode
D, VR		Zener Diode
DS		Annunciator Light Emitting Diode Lamp Fluorescent Lamp Incandescent Lamp Indicating Lamp
DS
E		Armature (Commutor and Brushes) Lightning Arrester Contact Electrical Contact Fixed Contact Momentary Contact Core Magnetic Core Horn Gap Permanent Magnet Terminal Not Connected Conductor
F		Fuse
G		Rotary Amplifier (all) A.C. Generator Induction Machine, Squirrel Cage Induction Generator
HR		Thermal Element Actuating Device
J		Female Disconnecting Device Female Receptacle
K		Contactor, Relay
L		Coil Blowout Coil Brake Coil Operating Coil Field Commutating Field Compensating Field Generator or Motor Field Separately Excited Field Series Field Shunt Field Inductor Saturable Core Reactor Winding, General
LS		Audible Signal Device Bell Buzzer Horn
M		Meter, Instrument
P		Male Disconnecting Device Male Receptable
Q		Thyristor NPN-Transistor PNP-Transistor
R		Resistor Adjustable Resistor Heating Resistor Tapped Resistor Rheostat Shunt Instrumental Shunt Relay Shunt
S		Contact Time Closing Contact Time Opening Contact Time Sequence Contact Transfer Contact Basic Contact Assembly Flasher
S		Switch Combination Locking and Nonlokking Switch Disconnect Switch Double Throw Switch Drum Switch Flow-Actuated Switch Foot Operated Switch Key-Type Switch Knife Switch Limit Switch Liquid-Level Actuated Switch Locking Switch Master Switch Mushroom Head Operated Switch Pressure or Vacuum Operated Switch Pushbutton Switch Pushbutton Illuminated Switch, Rotary Switch Selector Switch Single-Throw Switch Speed Switch Stepping Switch Temperature-Actuated Switch Time Delay Switch Toggle Switch Transfer Switch Wobble Stick Switch Thermostat
T		Transformer Current Transformer Transformer, General Polyphase Transformer Potential Transformer
TB		Terminal Board
TC		Thermocouple
U		Inseparable Assembly
V		Pentode, Equipotential Cathode Phototube, Single Unit, Vacuum Type Triode Tube, Mercury Pool
W		Conductor Associated Multiconductor Shielded Conductor, General
X		Tube Socket