Rated for AC-3 switching at 750 operations per hour maximum, this contactor handles the typical duty cycle of a conveyor motor or pump starter without overheating. The AC-4 rating drops to 250 ops/h — that's the inching or plugging duty limit; if your application requires frequent reversals, factor that in. Auxiliary switch contacts are rated from 10 A at 24 V down to 0.2 A at 440 V, covering both low-voltage PLC inputs and higher-voltage interlock circuits. Wire range accepts solid or stranded conductors from 0.5 to 4 mm², with dual-wire capability up to 2x 4 mm². That covers most control-circuit wiring sizes without needing ferrule adapters.
Siemens 3RT2016-1AN21 SIRIUS Power Contactor, Size S00, 24 V
MPN3RT2016-1AN21
Active
Siemens SIRIUS power contactor, 3RT2016-1AN21, Size S00, 24 VDC coil, screw-type terminals, 45 x 58 x 73 mm, snap-on DIN-rail mount.
$17.78Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S00 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 8.5 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 1 hp |
| Rated value @ 24 V | 10 A |
| Rated value @ 60 V | 2 A |
| Rated value @ 110 V | 1 A |
| Rated value @ 220 V | 0.3 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | AC |
| Rated value @ 50 Hz | 0.25 |
| Rated value @ 50 Hz | 220 V |
| Parameter | Value |
|---|---|
| Main poles | 3 |
| Main NO contacts | 3 |
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Short-circuit coordination type 1, fuse | gG: 35A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA) |
| Short-circuit coordination type 2, fuse | gG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid | 0.5 ... 4 mm² |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm² |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| Side-by-side mounting | Yes |
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 30 000 000 |
| Durability with aux. switch block (cycles, typ.) | 10 000 000 |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 58 mm |
| Depth | 73 mm |
| Parameter | Value |
|---|---|
| At AC | 4 ... 15 ms |
Product details
Frequently asked questions
Will 3RT2016-1AN21 drop into a panel specified around 3RT2016-1AK21 without rewiring?
Both are Size S00 SIRIUS contactors with identical mounting footprint and screw-type terminals. The 3RT2016-1AK21 uses a 24 VAC/DC coil; the 3RT2016-1AN21 uses a 24 VDC coil only. If the panel control voltage is pure 24 VDC, the swap is direct — same DIN-rail position, same wire range. If the original circuit supplied AC ripple, verify the coil supply is clean DC before substituting.
Where can I buy 3RT2016-1AN21 and how is it quoted?
This part is sourced through independent industrial-automation distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
MPN
3RT2016-1AN21