Electrical Symbols Preview

Circuit Breaker (single pole)
Circuit Breaker (double pole)
Circuit Breaker (triple pole)
Isolator (double pole)
Isolator (double pole)
Push button (start)
I
Push button (stop)
O
Push button (emergency stop)
E/S
Coil (contactor)
A B C
Contactor (triple)
1 2 3 4 5 6 C
Coil (time relay)
A B T
Contact of contactor (n/o - normally open)
C
Contact of contactor (n/c - normally close)
C
Contact of time relay (n/o - normally open)
T
Contact of time relay (n/c - normally close)
T
Overload relay (triple pole)
O/L
Overload relay
O/L
Motor (A.C.)
M ~
Motor Three-phase induction (direct on line)
A B C M 3~
Motor Three-phase induction (star-delta)
A1 B1 C1 A2 B2 C2 M 3~
Motor Three-phase induction (slip ring)
A B C K L M M 3~
Connections to supply
L1 L2 L3 N
Energy meter (kilo Watt hour meter)
kWh
Ammeter
A
Voltmeter
V
Earth connection
Lamp (incadescent)
Lamp (indication)
P
Resistor
Capacitor
Fuse
Switch (single pole)