Applications
Line-up Electromagnetic Electromagnetic Thermal Overload
Switches
Contactors
Relays
Applications
Variation of wiring for Electromagnetic Switches
Variation of wiring for Electromagnetic Switches
（1）Manual motor control
These wiring diagrams show an example of a simple circuit where users can start the motor with the ON button
and stop the motor with the OFF button.
＜Elementary Connection Diagram＞
Power Source
R
A1
MC
A2
S
Power Source
T
R
1/L1 3/L2 5/L3
13
21
2/T1 4/T2 6/T3
14
22
T
OFF
1/L1 3/L2 5/L3
MC
2/T1 4/T2 6/T3
3
ON
Reversible Electromagnetic Switches/ Contactors・
Electromagnetic Switches with ON-OFF Push-buttons・
Electromagnetic Swithes with Special Enclosures
98
MC
THR
OFF
95
2/T1 4/T2 6/T3
U
V
Push-button Switch
(BSH222)
U
M
V
13
A1
MC
A2
2/T1 4/T2 6/T3
1
W
14
ON
3
96
THR
1
2
2
W
96
THR
M
95
＜Examples of Applicable Push-button Switches＞
・BSH222 (WBSH222, PBSH222, etc.) x 1
・BSH221ON (WBSH221 ON, etc.) x 1 and BSH221OF (WBSH221 OF, etc.) x 1
・B-Series Control Switches, etc.
Star Delta
Automatic Starters
（2）Manual motor control with independent power source
These wiring diagrams show an example of a circuit where the controlling circuit gains power from a different
source (e.g. 200V for main circuit and 100V for controlling circuit). Users can start/stop the motor with the ON/OFF
buttons. Use a coil-independent-type magnetic starter for this system.
＜Elementary Connection Diagram＞
Power Source
Industrial
Relays
Auxiliary Contact Units・
Applications
Safety Covers
51
S
R
A1
MC
A2
S
Power Source Power Source
R
T
1/L1 3/L2 5/L3
13
21
2/T1 4/T2 6/T3
14
22
S
T
1/L1 3/L2 5/L3
MC
2/T1 4/T2 6/T3
3
ON
THR
U
V
95
THR
2/T1 4/T2 6/T3
1
W
U
Switch (BSH222)
M
OFF
1
2
14
ON
3
96
OFF
2/T1 4/T2 6/T3
R
MC
2
98
S
R
S Power Source
＜Examples of Applicable Push-button Switches＞
・BSH222 (WBSH222, PBSH222, etc.) x 1
・BSH221ON (WBSH221 ON, etc.) x 1 and BSH221OF (WBSH221 OF, etc.) x 1
・B-Series Control Switches, etc.
V
M
W
13
A1
MC
A2
96
THR
95
Applications
（3） Automatic motor control
These wiring diagrams show an example of a basic circuit where the motor operates when the control switch is on
and stops when the switch resets. An example of its application is the automatic control of water supply and
drainage. With a hand push-button switch (such as BSH221ON), this system can be used for inching operations.
＜Elementary Connection Diagram＞
Power Source
1/L1
A1
S
3/L2
Power Source
R
T
5/L3
13
21
2/T1 4/T2 6/T3
14
22
Control Switch
R
MC
A2
98
96
THR
2/T1 4/T2 6/T3
U
V
S
T
1/L1 3/L2 5/L3
MC
2/T1 4/T2 6/T3
A1
MC
A2
THR
96
2/T1 4/T2 6/T3
95
THR
W
U
V
W
M
＜Examples of Applicable Push-button Switches＞
・Nissui Liquid Level Relay (TBL12), Float Level Switch (FLS), Floatless Relay (FLR)
・Pressure switches, Temperature Switches, Limit Switches
・Snap Switches, Seesaw Switches
・B-Series Control Switches (Alternate-Type), etc.
（4） Motor control from two locations
＜Elementary Connection Diagram＞
Power Source
R
Power Source
T
R
1/L1 3/L2 5/L3 13
21
2/T1 4/T2 6/T3 14
22
3
3
ON
THR
2/T1 4/T2 6/T3
U
V
96
2
OFF
2/T1 4/T2 6/T3
1
2/T1 4/T2 6/T3
U
W
V
W
Note
M
M
Note: Remove the wire marked with
an asterisk (between the ON
and OFF buttons).
＜Examples of Applicable Push-button Switches＞
・BSH222 (WBSH222, PBSH222, etc.) x 2
OFF
OFF
ON
THR
OFF
1
95
1/L1 3/L2 5/L3
1
1
2
3
2
3
A1
MC
A2
96
THR
95
14
MC
13
Auxiliary Contact Units・
Applications
Safety Covers
98
T
MC
ON
2
S
Industrial
Relays
A1
MC
A2
S
Star Delta
Automatic Starters
These wiring diagrams show an example of a circuit where users can start/stop the motor with the ON/OFF buttons
of any of the two switches. To control the motor from three different locations, or more, wire all of the ON
pushbuttons in parallel and all of the OFF push-buttons in series.
Reversible Electromagnetic Switches/ Contactors・
Electromagnetic Switches with ON-OFF Push-buttons・
Electromagnetic Swithes with Special Enclosures
M
95
Line-up Electromagnetic Electromagnetic Thermal Overload
Switches
Contactors
Relays
Variation of wiring for Electromagnetic Switches
52
Applications
（5）Control of inching-included motor operations
These wiring diagrams show an example of a circuit where users can perform inching with the inching button in
addition to normal start/stop operations with the ON/OFF buttons.
＜Elementary Connection Diagram＞
R
A1
MC
A2
S
R
T
1/L1 3/L2 5/L3 13
21
2/T1 4/T2 6/T3 14
22
98
V
10
OFF
ON
13
96
14
13
14
MC
13
THR
2/T1 4/T2 6/T3
ON
U
T
14
THR
2/T1 4/T2 6/T3
S
1/L1 3/L2 5/L3
MC
2/T1 4/T2 6/T3
Inching
Line-up Electromagnetic Electromagnetic Thermal Overload
Switches
Contactors
Relays
Reversible Electromagnetic Switches/ Contactors・
Electromagnetic Switches with ON-OFF Push-buttons・
Electromagnetic Swithes with Special Enclosures
Star Delta
Automatic Starters
Industrial
Relays
Auxiliary Contact Units・
Applications
Safety Covers
53
Variation of wiring for Electromagnetic Switches
95
A1
W
U
OFF
V
MC
W
A2
10
M
96
M
THR
95
＜Examples of Applicable Push-button Switches＞
・BSH223A (WBSH222A, PBSH222A, etc.) x 1
（6）Automatic-manual switch-selectable circuit
These wiring diagrams show an example of a circuit where, with the selector switch, users can select the control
of the motor between automatic (with the control switch) and manual (with the push-button switch).
＜Elementary Connection Diagram＞
Power Source
R
A1
MC
A2
S
Power Source
R
T
1/L1 3/L2 5/L3 13
21
2/T1 4/T2 6/T3 14
Switch
98
Automatic MC
2/T1 4/T2 6/T3
2/T1 4/T2 6/T3
Manual
1
2/T1 4/T2 6/T3
Automatic
14
MC
ON
THR
2
95
OFF
2
3
96
ON
THR
T
1/L1 3/L2 5/L3
Manual
22
S
3
13
A1
U
V
W
OFF
U
V
MC
A2
1
M
W
Control Switch
＜Examples of Applicable Push-button Switches＞
Selector Switches
・Selector Switch (B2P)
・Cam Switch, etc.
Pushbutton Switches
・BSH222 (WBSH222, PBSH222, etc.)
Control Switches
・Nissui Liquid Level Relay (TBL12), Float Level Switch (FLS), Floatless Relay (FLR)
・Pressure switches, Temperature Switches, etc.
M
96
THR
95
Applications
（7）Time-switch-based automatic flashing circuit
With a time switch that directly gives the voltage at its load terminals, this circuit lets the load turn on and off for
the pre-set time periods.
When building the circuit, never forget to follow the instruction bundled with your time switch, since the internal
circuit of a time switch may vary according to the type and maker.
＜Elementary Connection Diagram＞
Power Source
Power Source
R
S
R
S
A1
MC
A2
1/L1 3/L2 5/L3 13
21
2/T1 4/T2 6/T3 14
22
Time Switch
Source
1/L1
5/L3
MC
2/T1
6/T3
A1
MC
Output
A2
L
Load
Load
Reversible Electromagnetic Switches/ Contactors・
Electromagnetic Switches with ON-OFF Push-buttons・
Electromagnetic Swithes with Special Enclosures
L
Line-up Electromagnetic Electromagnetic Thermal Overload
Switches
Contactors
Relays
Variation of wiring for Electromagnetic Switches
Star Delta
Automatic Starters
Industrial
Relays
Auxiliary Contact Units・
Applications
Safety Covers
54