Mounting of 3RR2 current monitoring relay, screw-type connection system (size S0)
① Push the current monitoring relay into the contactor from below. Attach the two hooks on the
current monitoring relay to the two openings on the rear of the contactor. This pushes the main
current contacts into the corresponding terminals on the contactor.
② Tighten the screws on the contactor with a Pozidriv size 2 (S00) or Pozidriv size 3 (S0) screwdriver
(tightening torque 0.8 ... 1.2 Nm).
Check that the cable is clamped tight.
Note
The connection cross-sections of the removable and permanently connected terminal blocks
with screw-type connections are described in the Chapter "Screw-type connection (Page 23)".
System overview
3.4 Mounting / removal
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 33
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