Star-delta starting, 45 kW at 400 V
The 3RA2436-8XF32-1AC2: It ships with two 3RT2036-1AC20 contactors for the line and delta legs and one 3RT2028-1AC20 for the star leg — matched contactors from the same S2 frame size, so the thermal and magnetic trip coordination is pre-validated. The 45 kW rating at 400 V tells you the assembly is sized for a 45 kW motor (typically a 55–60 hp frame at 400 V), and the 690 V ceiling means it can also serve 480 V or 575 V installations within the same current envelope. The mechanical life of the contactor is 10,000,000 operations typical, and the maximum AC-3 switching rate is 800 cycles per hour — a duty cycle that supports frequent starts on conveyors or pumps without derating.
Mounting and wiring constraints
All terminals are screw-type — no spring-cage option on this variant.
Sourcing, lifecycle, and compliance
RoHS compliance date is 10/01/2014, meaning the part meets the EU RoHS substance restrictions from that date forward. The supplied RS assembly kit is 3RA2933-2C. For short-circuit protection, the required fuse type is gG NH 3NA, DIAZED 5SB, or NEOZED 5SE, all rated 80 A.