The 3RA2434-8XF32-1NB3: It ships with three contactors: two 3RT2035-1NB30 units for the line and star legs, and one 3RT2026-1NB30 for the delta leg. The assembly includes a varistor surge suppressor across the coil and an RS assembly kit (3RA2933-2C) for wiring the interlocking and timing circuits. The contactor size is S2, and the mechanical life is rated at 10 million operating cycles typical.
Mounting and wiring constraints
All terminals are screw-type — no spring-cage option on this variant.
Protection coordination and environmental limits
For Type 2 coordination, the required upstream fuse is 80 A gG (NH 3NA, DIAZED 5SB, or NEOZED 5SE).