Siemens 3RT20161AK61 S00 Contactor
Catalog Comparison
The 3RT20161AK61 is a Siemens Size S00 electromechanical contactor from the 3RT2016 series with a 120VAC coil and one normally-open auxiliary contact. All peer variants below share the same 9 A contact rating, 3PST-NO pole configuration, and chassis/DIN rail mounting — they differ in auxiliary contact polarity, coil power draw, encapsulation, or coil voltage.
| 3RT20161AK61 | 3RT20161AK62 | 3RT20161AN61 | 3RT20161AV61 | |
|---|---|---|---|---|
| Contact Rating | 9 A | 9 A | 9 A | 9 A |
| Coil Voltage | 120VAC | 120VAC | 200VAC | 480VAC |
| Coil Power | 26.4VA | 26.4VA | 26.4VA | 31.7VA |
| Must Operate | 96 VAC | 96 VAC | 170 VAC | 408 VAC |
| Auxiliary | 1NO | 1NC (same position code) | 1NO | 1NO |
| Encapsulation | Bulk | Bulk | Bulk | Box |
| Similarity | — | 1.0 | 1.0 | 1.0 |
Why each is similar:
- 3RT20161AK62 shares the full mechanical frame, coil voltage, and power draw; the position code changes only the auxiliary contact from normally-open to normally-closed. The two share identical current, mounting, and timing specs.
- 3RT20161AN61 shares the same 120VAC coil power and bulk encapsulation but uses a 200VAC coil, raising the must-operate threshold proportionally. Same 9 A rating and DIN-mount frame.
- 3RT20161AV61 uses a 480VAC coil (higher coil power at 31.7VA) yet retains the 9 A main pole rating and standard 35 ms operate time. Encapsulation shifts to box packaging.
Siemens 3RT2016 Series Context
The Size S00 frame (3RT20 series) occupies the lower end of Siemens' standard industrial contactor lineup, typically deployed in motor branch circuits, lighting feeders, or as auxiliary control relays in starters and contactor assemblies. The 3RT2016 base number denotes the 9 A AC-3 utilization category variant within that size class. The suffix block (AK61) encodes coil voltage class (A = 110–120VAC), contact arrangement (K indicates one auxiliary contact in the standard position), and termination type (6 = screw terminals).
These parts ship in bulk or box depending on the specific variant; the primary unit lists bulk encapsulation.
Key Parameters
- Contact rating: 9 A AC-3 (utilization category per IEC)
- Pole configuration: 3PST-NO (three normally-open poles)
- Coil voltage: 120VAC nominal
- Coil power consumption: 26.4VA (inrush/holding combined rating)
- Must-operate voltage: 96 VAC
- Operate time ( energize ): 35 ms
- Operating temperature range: 25°C to 60°C
- Mounting: Chassis mount or 35 mm DIN rail
- Auxiliary contacts: One normally-open (integrated, position K)