SIEMENS
SIEMENS 3RT2026-1AC20 IEC Magnetic Contactor 24V AC 3P 25A
IEC magnetic contactor with 24 V AC coil, three poles, 25 A inductive rating and 1 NO/1 NC auxiliary contacts, DIN-rail or surface mountable
- IEC-standard motor switching for reliable industrial control
- 24 V AC coil voltage suits common control circuits
- 25 A inductive current rating handles typical motor loads
- 3-pole main contacts plus 1 NO / 1 NC auxiliaries for flexible wiring
- DIN-rail or surface mounting fits standard panels
IEC Magnetic Contactor 24V AC 3P 25A
The SIEMENS 3RT2026-1AC20 is a three-pole IEC magnetic contactor rated for 25 A inductive and 40 A resistive loads at 24 V AC coil voltage. It provides 1NO and 1NC auxiliary contacts for control circuits. This device suits panel builders and maintenance engineers wiring motor starters or lighting circuits in industrial control panels. It mounts on DIN rail or directly on a surface for flexible installation.
Coil voltage limits and enclosure rating
The 24 V AC coil requires a matching control transformer or supply; it will not operate on DC or higher AC voltages. The contactor carries no NEMA enclosure rating, so it must be installed inside a suitably rated cabinet for protection against dust and moisture. Screw terminals accept standard ferrules or stripped wire for secure connections. Non-reversing operation means a separate reversing assembly is needed for motor direction changes.
Full load inductive current 25 A
The 25 A inductive full-load current rating is the decisive figure for selecting this contactor; applications exceeding this value require a larger frame size. Resistive loads up to 40 A are supported within the same frame. Frame size S0 and the SIRIUS 3RT20 series define the physical footprint and accessory compatibility. Verify that the load type and current match these ratings before specifying this part.
Highlights
- IEC-standard motor switching for reliable industrial control
- 24 V AC coil voltage suits common control circuits
- 25 A inductive current rating handles typical motor loads
- 3-pole main contacts plus 1 NO / 1 NC auxiliaries for flexible wiring
- DIN-rail or surface mounting fits standard panels
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
Should I pick the 25 A inductive or the 40 A resistive rating for my load?
Use the 25 A inductive figure for motors, transformers or other inductive loads; the 40 A resistive value applies only to heating elements or similar resistive circuits.
What does the 24 V AC coil voltage mean once the contactor is installed?
The coil requires a 24 V AC control signal to close the three main poles; the control circuit must supply that voltage and frequency.
How does the IEC frame size S0 limit the contactor in practice?
Frame size S0 defines the physical envelope and the 25 A inductive current ceiling; it cannot be used for loads above that rating.
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