SIEMENS
SIEMENS 3RT20171AK61 IEC Magnetic Contactor 1NO 110-120V AC 3P
IEC magnetic contactor with 12 A inductive and 22 A resistive ratings, 110-120 V AC coil, three poles, one normally open auxiliary contact, and DIN-rail or surface mounting
- 12 A inductive rating for reliable motor switching
- 22 A resistive capacity handles heating loads
- 110-120 V AC coil matches common control voltages
- Three-pole design controls three-phase circuits
- DIN-rail and surface mounting fits standard panels
SIEMENS 3RT20171AK61 IEC Contactor
This SIEMENS 3RT20171AK61 is an IEC magnetic contactor built for industrial control circuits. It suits panel builders and maintenance teams who need a compact 3-pole device for motor starting or power switching applications. The unit mounts on DIN rail or a flat surface and uses screw terminals for secure wiring connections. It belongs to the SIRIUS 3RT20 series with frame size S00.
Coil voltage and pole limits
The contactor operates on a 110/120V AC control coil and provides three main power poles for three-phase loads. It is rated for 12 A full-load inductive current and 22 A full-load resistive current at the main contacts. The device does not offer reversing capability and carries no NEMA enclosure rating, so additional protection must be provided by the enclosure builder. One normally-open auxiliary contact (1NO) is included for status signalling.
12 A inductive rating decides fit
The 12 A inductive full-load current is the single figure that determines whether this contactor matches the motor or load you are switching. If your application draws more than 12 A inductive on the main poles, this model will not be suitable and a larger frame size must be selected. The 1NO auxiliary contact supports basic control logic but adds no extra power-switching capacity. Buyers needing higher inductive current or additional auxiliary contacts must choose a different contactor.
Highlights
- 12 A inductive rating for reliable motor switching
- 22 A resistive capacity handles heating loads
- 110-120 V AC coil matches common control voltages
- Three-pole design controls three-phase circuits
- DIN-rail and surface mounting fits standard panels
Specifications
| Brand | SIEMENS |
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Questions about this item
Should I pick the 12 A inductive or 22 A resistive rating for my load?
Use the 12 A figure for motor or inductive loads and the 22 A figure for purely resistive heating loads; the contactor carries both ratings simultaneously.
What does the 110-120 V AC coil voltage mean once the contactor is wired in a panel?
The coil will energise reliably on any supply between 110 V and 120 V AC, pulling in the three main poles and the single normally-open auxiliary contact.
How does the screw-terminal interface limit the wire size I can connect?
Screw terminals accept solid or stranded conductors up to the cross-section allowed by the S00 frame; strip length and tightening torque follow the SIRIUS 3RT20 installation guide.
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