Specifications

21
Wiring and Terminal Processing
Make all connections correctly according to the connection diagram. For the SK06 to SK12, you can use solid wires, stranded wires, or crimped
terminals for the main terminals, auxiliary terminals, and coil terminals.
Tightening Torque
If the Magnetic Contactor or Switch is not mounted completely, the shock when the Contactor or Switches is turned ON may cause the contacts
to jump or may reduce the durability. Also, if wires are not tightened sufficiently, they may become hot or loose, resulting in a fire, short-circuit,
electric shock or some other potentially dangerous situation. Be sure to tighten the wires to the torque that is specified in the following table.
Terminals, Wire Sizes, and Tightening Torque
1) Terminals can be wired with solid wires, stranded wires, or crimped terminals can be used to connect the terminals. To use round crimped
terminals, remove the terminal cover before you connect them to the terminals.
2) The connectable wire sizes and tightening torque are given in the following table.
Main terminals Control and auxiliary terminals
Direct connection Solid wire [mm] 1 wire (1.2 to 2mm dia.)
2 wires (1.2 to 1.6mm dia.)
2 wires (1.6 to 2mm dia.)
[AWG] 1 wire x (16 to 12)
2 wires x (16 to 14)
2 wires x (14 to 12)
Stranded wires [mm
2
] 1 wire x (0.75 to 2.5)
2 wires x (0.75 to 1.5)
2 wires x (1.5 to 2.5)
[AWG] 1 wire x (18 to 14)
2 wires x (18 to 16)
2 wires x (16 to 14)
Sheath stripping
length
[mm]
10
Flexible stranded wires with sleeves [mm
2
] 1 wire x (0.75 to 2.5)
2 wires x (0.75 to 1.5)
2 wires x (1.5 to 2.5)
[AWG] 1 wire x (18 to 14)
2 wires x (18 to 16)
2 wires x (16 to 14)
Sleeve length
[mm]
10
Terminal connection Stranded wires or flexible stranded wires [mm
2
] 0.75 to 4 0.75 to 2.5
[AWG] 18 to 10 18 to 14
Largest crimped
terminal
[mm]
7.7
Terminal screw size M3.5
Tightening tool Phillips H2 screwdriver
Flat-blade screwdriver, 1x5.5xL, type B
Flat-blade screwdriver, 1×5.5×L, type B [N･m] 0.8 to 1.0
Note 1. Flexible stranded wires without sleeves cannot be used. Attach sleeves before connecting the wires.
・
0.75 to 4mm2 (AWG 18 to 12) stranded wire: 7 strands or less
・
Flexible stranded wire: More strands that given above.
Note 2. Use DIN 46228-compliant sleeves.
・
For 1.5 to 2.5mm2 (AWG 16 to 14) wires, use sleeves without insulating sheaths.
・
You will not be able to insert the sleeves for some crimping tools. Use a Phoenix Contact CRIMPFOX 6 crimping tool or the equivalent.
Observe manufacture instructions on the wire sheath stripping lengths.
Note 3. For compliance with UL or CSA standards, you must use AWG 14 or 12 wires. Also, you must use solid wires, or use stranded or flexible stranded wires
with crimped terminals or sleeves.
Note 4. Two crimped terminals can be connected.
Note 5. Do not connect anything to terminals that are not wired.
Note 6. After you bend or otherwise arrange the connected wires after wiring, make sure that the tightening torque is still correct.
Note 7. If 18 A or higher will continuously flow through a Magnetic Contactor in an environment that exceeds 40°C, wiring with 4mm2 or AWG 12 wires.
Mini-Contactors
SK Series
Wiring
Wiring