The contactor is rated for switching frequencies that depend on duty class: up to 1 000 1/h at AC-1 (resistive), 750 1/h at AC-2 and AC-3 (motor starting/running), and 250 1/h at AC-4 (plugging/inching). The AC-3e rating matches the AC-3 figure at 750 1/h, confirming suitability for standard motor duty cycles. The auxiliary contact block is not included (no auxiliary switch), so an add-on block must be specified separately if feedback or signaling is needed. Auxiliary contact ratings are provided at multiple voltages: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 3 A at 400 V, and 0.2 A at 440 V. At 230 V it is rated for 1 hp motor load. Power loss at 50 Hz and 60 Hz is 0.25 W each.

Siemens 3RT2016-1CK27 SIRIUS Power Contactor, Size S00, 24 V
MPN3RT2016-1CK27
Active
Siemens SIRIUS 3RT2016-1CK27, power contactor, Size S00, 24 VDC coil, screw-type terminals, screw and snap-on mounting on 35 mm DIN rail.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 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 | 6 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 | 120 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 standard mounting rail according to DIN EN 60715 |
| Side-by-side mounting | Yes |
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 10 000 000 |
| 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 | 117 mm |
| Parameter | Value |
|---|---|
| At AC | 7 ... 13 ms |
Product details
Frequently asked questions
What are the key dimensions of the 3RT2016-1CK27?
Width is 45 mm, height is 58 mm, and depth is 117 mm. It mounts on 35 mm DIN rail.
Does the 3RT2016-1CK27 include an auxiliary contact block?
No, it ships without an auxiliary switch. An add-on block must be ordered separately if needed.
What wire sizes does the screw terminal accept?
Solid or stranded wire from 0.5 to 4 mm², with combinations like 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm².
MPN
3RT2016-1CK27