Siemens 3RT20171AB01 Electromechanical Contactor
Siemens 3RT20171AB01 Specifications
| Parameter | Value |
|---|---|
| Base Product Number | 3RT2017 |
| Contact Rating | 12 A |
| Coil Voltage | 24 VAC |
| Coil Power | 37 VA |
| Contact Form | 3PST-NO (3 Form A) |
| Must Operate Voltage | 20.4 VAC |
| Operate Time | 33 ms |
| Mounting Type | Chassis Mount, DIN Rail |
| Operating Temperature | 25°C ~ 60°C |
| Encapsulation | Bulk |
| Features | Auxiliary Contacts |
| Manufacturer | Siemens |
The 3RT20171AB01 is a Siemens Size S00 electromechanical contactor rated for 12 A continuous current at coil voltages of 24 VAC. The device uses a 3PST-NO (three Form A) contact arrangement and requires a minimum pull-in voltage of 20.4 VAC, with an operate time of 33 ms.
Overview
The S00 form factor positions this contactor in the compact end of Siemens' standard electromechanical switching portfolio. The 3RT2017 base series is designed for general-purpose motor and load control in industrial branch circuits. Coil power consumption is specified at 37 VA during energization. Operating temperature range spans 25°C to 60°C.
Selection Trade-offs for the 3RT20171AB01 Family
- Coil voltage selection determines must-operate threshold; 24 VAC parts require 20.4 VAC minimum pull-in.
- Contact form is fixed as NO (normally open) on the primary pole set; auxiliary contact configuration is noted in the Features field.
- S00 frame size constrains thermal and interruption ratings relative to larger S0/S2 frames.
- Encapsulation type (Bulk vs. Box) affects quantity packaging and potentially shelf-life protection.
Similar Catalog Parts (Reader Qualification Required)
| Parameter | 3RT20171AB01 | 3RT20171AB011AA0 | 3RT20171AB02 |
|---|---|---|---|
| Coil Voltage | 24VAC | 24VAC | 24VAC |
| Contact Rating | 12 A | 12 A | 12 A |
| Mounting Type | Chassis, DIN Rail | Chassis, DIN Rail | Chassis, DIN Rail |
| Coil Power | 37VA | 33VA | 37VA |
| Operate Time | 33 ms | 35 ms | 33 ms |
| Contact Form | 3PST-NO | 3PST-NO | 3PST-NO |
| Encapsulation | Bulk | Box | Bulk |
| Similarity | — | 1.0 | 1.0 |
3RT20171AB011AA0: Shares the same brand, 3RT2017 base PN, 24VAC coil, 12A contact rating, and DIN Rail mounting as the primary part. Differs in encapsulation (Box vs. Bulk) and slightly lower coil power (33VA vs. 37VA) with marginally longer operate time (35 ms vs. 33 ms).
3RT20171AB02: Matches the primary part on coil voltage (24VAC), contact rating (12A), mounting type, coil power (37VA), and operate time (33 ms). The suffix difference indicates a contact-form variation that the reader should confirm against ordering documentation.