That AC-3 duty class means it's designed for switching squirrel-cage motors — the typical load for conveyors, pumps, and fans in a cement plant. The 4 kW rating at 400 V tells you the maximum three-phase motor it can handle under those conditions; push a 5.5 kW motor on this contactor and the contacts will wear prematurely.
3RT1016-1BF45-ZW98 Siemens Contactor, AC-3 4kW/400V
MPN3RT1016-1BF45-ZW98
Siemens, SIRIUS series, contactor, AC-3, 4kW/400V, order code 3RT1016-1BF45-ZW98.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What is the AC-3 rating of 3RT1016-1BF45-ZW98?
It is rated AC-3 for 4 kW at 400 V, which is the standard motor-switching duty for squirrel-cage induction motors up to that power level.
Where can I buy 3RT1016-1BF45-ZW98?
This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.
MPN
3RT1016-1BF45-ZW98