PMA-Relay S 3PH
from 60A to 210A
14
User Manual
8.
Wiring instructions
The Thyristor unit could be susceptible to interferences lost by near equipments or by the power
supply, for this reason in accord to the fundamental practices rules is opportune take some
precautions:
• The coil contactor, the relays and other inductive loads must be equipped with opportune RC
filter.
• Use shielded bipolar cables for all the input and output signals.
• The signal cables must not be near and parallel to the power cables.
• Local regulations regarding electrical installation should be rigidly observed.
Use copper cables and wires rated for use at 90°C only.
Power cable torque (suggested)
Type
Connector
Type
Torque Lb-in
(N-m)
Wire Range
mm² (AWG)
MAX Current
Terminals
Wire Terminals
UL Listed (ZMVV)
060
090*
120
Screw M6
70.8 (8.0)
16 (5)
25 (3)
35 (2)
150 A
Fork/Spade Terminal
Copper Tube Crimp.Lug
150
180
210
Screw M8
141.6 (16.0)
50 (0)
70 (00)
90 (000)
250 A
Fork/Spade Terminal
Copper Tube Crimp.Lug
*75A for UL
Cable dimensions of the Command Terminals:
0.5 mm² (AWG 18)
Cable dimensions of the Earth (suggested):
16 mm² (AWG 6)
up to 120A
25 mm² (AWG 4)
up to 210A
8.1.
Terminals Positions 3PH 60-90A Size
Top view
Down view
