SIEMENS
SIEMENS 3RT20151AK61 IEC Magnetic Contactor 1NO 110-120V AC 3P
IEC magnetic contactor with 1NO auxiliary contact, 3-pole operation at 110-120V AC coil voltage, 7A inductive and 18A resistive ratings, DIN rail or surface mount
- IEC-standard contactor built for reliable motor switching
- 110-120 V AC coil fits common control voltages
- Three-pole main circuit handles 7 A inductive and 18 A resistive loads
- One normally-open auxiliary contact for status signalling
- Compact 2.4 in by 1.95 in frame mounts on DIN rail or surface
IEC Magnetic Contactor 3-Pole
The SIEMENS 3RT20151AK61 is a 3-pole IEC magnetic contactor designed for switching motor loads and resistive circuits in industrial control panels. It operates on a 110-120V AC coil voltage and includes one normally open auxiliary contact for status signalling or interlocking. The unit mounts on a DIN rail or directly onto a surface within the S00 frame size.
Thermals and Power Draw
With a full load inductive rating of 7 A and a resistive rating of 18 A, the contactor handles typical control-circuit currents without forced cooling. The compact dimensions of 2.4 in height by 1.95 in width allow dense packing on the rail while maintaining adequate airflow. Screw terminals provide secure connections that minimise contact resistance and associated heat rise during normal operation.
Sustained Load Behaviour
Under continuous duty the contactor maintains reliable switching performance within its rated current limits. The non-reversing design suits applications where motor direction remains constant, reducing mechanical wear over extended run times. The SIRIUS 3RT20 series construction supports consistent operation in demanding industrial environments where the coil remains energised for long periods.
Highlights
- IEC-standard contactor built for reliable motor switching
- 110-120 V AC coil fits common control voltages
- Three-pole main circuit handles 7 A inductive and 18 A resistive loads
- One normally-open auxiliary contact for status signalling
- Compact 2.4 in by 1.95 in frame mounts on DIN rail or surface
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
How is the S00 frame contactor mounted and what step is often missed?
Clip the unit onto a standard DIN rail or screw it to a flat surface using the integrated tabs; the step often missed is verifying that all three main poles and the auxiliary contact are fully seated before energising the 110-120V AC coil.
What maintenance or replacement will the auxiliary contact need later?
The single 1NO auxiliary contact is rated for 18 A resistive load; plan to replace the contactor when the contact shows excessive wear or fails to close reliably after extended switching cycles.
What limit appears first under sustained use at full inductive load?
The 7 A inductive full-load current rating is the limiting factor; continuous operation at this level will cause coil heating to become the first constraint during prolonged duty.
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