Siemens 3TF2010-0AK6 Contactor

Siemens 3TF2010-0AK6 Contactor, size 00, is a 3-pole motor starter rated for AC-3 duty, delivering 9 A at 400 V and supporting up to 4 kW loads at 400 V. It incorporates screw-terminal main contacts and a single auxiliary contact 10E (1NO) for signaling or interlocking. The coil is rated for 120 V AC at 60 Hz (and 110 V AC at 50 Hz variants), enabling compatibility with common control circuits. This unit is paired with the overload release 3UA7021-1E (overload range 2.5–4 A), providing motor protection by tripping when current exceeds the set range. With its compact size and screw terminals, it’s suitable for controlling small motors in equipment such as conveyors, pumps, fans, and basic automation assemblies where reliable switching and overload protection are required. The combination of a 3-pole contactor and an integral overload relay makes it straightforward to implement a basic motor control circuit that supports standard control schemes and protects connected loads from overcurrent.