Siemens 3RT20161AF02 S00 Contactor — 9 A, 110 VAC Coil
Catalog Identity and S00 Frame Context
The 3RT20161AF02 is a Siemens SIRIUS 3RT2 series electromechanical contactor in the S00 (Size 00) frame. The part carries a 9 A contact rating at the stated coil voltage of 110 VAC, with auxiliary contacts listed under Features. The Base Product Number shared across this group is 3RT2016, indicating the 9 A current class within the SIRIUS S00 modular system.
Key Selection Trade-offs
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Coil voltage class: The primary part specifies 110 VAC; alternates in this group span 24 VAC through 400 VAC. Coil voltage must match the control circuit feeding the contactor — selecting a part with a different coil voltage class requires a separate catalog entry; these cannot be interchanged without rewiring the coil circuit.
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Must-operate voltage margin: The seed specifies a must-operate voltage of 93.5 VAC, meaning the coil is guaranteed to pull in at or above that level across the stated operating temperature range of 25°C to 60°C. If the available control voltage is marginal or poorly regulated, confirm the must-operate threshold is comfortably exceeded.
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Auxiliary contact configuration: All parts in this group list "Auxiliary Contacts" under Features. The title suffix indicates 1NC (one normally closed auxiliary); however, the Contact Form field records 3PST-NO (three normally-open poles) — a discrepancy in the source catalog data that the reader should clarify against the Siemens ordering code or datasheet before finalizing the auxiliary function.
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Encapsulation / packaging: The seed ships in Bulk encapsulation; several alternates are listed as Box. Packaging may affect inventory handling and unit-of-issue in procurement.
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Coil power draw: The seed lists 27 VA; several alternates list 24.3 VA. Inrush and holding coil power affect VA sizing for the control transformer or power supply driving the coil — a 10% difference in coil VA may be material in tightly sized control circuits.
Technical Parameters
| Parameter | Value |
|---|---|
| Base Product Number | 3RT2016 |
| Contact Rating (Current) | 9 A |
| Coil Voltage | 110 VAC |
| Must Operate Voltage | 93.5 VAC |
| Coil Power | 27 VA |
| Contact Form | 3PST-NO (3 Form A) |
| Operate Time | 35 ms |
| Operating Temperature | 25°C ~ 60°C |
| Mounting Type | Chassis Mount, DIN Rail |
| Encapsulation | Bulk |
| Features | Auxiliary Contacts |
| Mfr | Siemens |
Similar Catalog Parts (Catalog Screening Only)
The table below presents in-catalog peers sharing the same base product number and 9 A rating. These are not approved substitutes; the reader must perform their own qualification before selecting any alternate for a given application.
| MPN | Coil Voltage | Coil Power | Must Operate | Contact Rating | Similarity |
|---|---|---|---|---|---|
| 3RT20161AF02 (primary) | 110 VAC | 27 VA | 93.5 VAC | 9 A | — |
| 3RT20161AF01 | 110 VAC | 27 VA | 93.5 VAC | 9 A | 1.0 |
| 3RT20161AF011AA0 | 110 VAC | 24.3 VA | 93.5 VAC | 9 A | 1.0 |
| 3RT20161AB02 | 24 VAC | 27 VA | 20.4 VAC | 9 A | 1.0 |
| 3RT20161AH02 | 48 VAC | 24.3 VA | 40.8 VAC | 9 A | 1.0 |
| 3RT20161AD02 | 42 VAC | 24.3 VA | 35.7 VAC | 9 A | 1.0 |
| 3RT20161AP02 | 230 VAC | 27 VA | 195.5 VAC | 9 A | 1.0 |
| 3RT20161AQ02 | 380 VAC | 24.3 VA | 323 VAC | 9 A | 1.0 |
| 3RT20161AV02 | 400 VAC | 24.3 VA | 340 VAC | 9 A | 1.0 |
Why Each Alternate Is Catalog-Similar
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3RT20161AF01 shares the identical coil voltage (110 VAC), must-operate voltage, coil power, and contact rating. The title indicates 1NO rather than 1NC auxiliary; the reader should verify auxiliary contact type against the intended safety or interlocking function.
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3RT20161AF011AA0 matches on coil voltage and contact rating but lists a slightly lower coil power (24.3 VA vs. 27 VA) and ships in Box encapsulation rather than Bulk. The parametric similarity score reflects this minor power rating difference.
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3RT20161AB02 is the 24 VAC coil variant within the same 3RT2016 family. Coil voltage class is the primary differentiator; must-operate voltage scales proportionally (20.4 VAC). These are distinct control-circuit selections, not interchangeable at the coil.
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3RT20161AH02 (48 VAC) and 3RT20161AD02 (42 VAC) represent lower-voltage coil options in the same series. Both share the same contact rating and mounting type; coil power and must-operate thresholds shift with the voltage class.
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3RT20161AP02 (230 VAC) and 3RT20161AQ02 (380 VAC) / 3RT20161AV02 (400 VAC) cover higher control voltages commonly used in three-phase or higher-utility environments. Must-operate voltages scale accordingly (195.5 VAC, 323 VAC, 340 VAC).