3RT2028-1AD20-0JA0 - Siemens
MPN3RT2028-1AD20-0JA0
Active
CONTACTOR, AC-3, 18.5KW/400V, 1NO+1NC, AC 42V 50/60HZ 3-POLE, SZ S0, INDIA 40 A SCREW TERMINAL
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 | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 22 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 5 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 | 42 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: 125A (690V,100kA), aM: 50A (690V,100kA), BS88: 125A (415V,80kA) |
| Short-circuit coordination type 2, fuse | gG: 50A (690V,100kA), aM: 25A (690V, 100kA), BS88: 50A (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 | 1 ... 10 mm² |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 ... +50 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 85 mm |
| Depth | 97 mm |
| Parameter | Value |
|---|---|
| At AC | 4 ... 16 ms |
Frequently asked questions
What is the coil voltage of the Siemens 3RT2028-1AD20-0JA0?
Buyers must confirm the 42V AC 50/60Hz coil matches their control circuit before specifying.
What does the AC-3 rating of 18.5kW at 400V mean for this contactor?
Defines the motor load size the contactor can switch under standard squirrel-cage motor duty.
What is the auxiliary contact configuration (1NO+1NC) on the 3RT2028-1AD20-0JA0?
Determines interfacing capability with control logic, indication, or interlock circuits.
How does the 3RT2028-1AD20-0JA0 differ from other Sirius S0 contactors like the 3RT2028-1AK60?
Helps buyers decide between 42V and other coil voltages when replacing or specifying.
Where can the Siemens 3RT2028-1AD20-0JA0 datasheet be downloaded?
Datasheets are required for panel design approvals and component qualification.
Is the 3RT2028-1AD20-0JA0 in stock in India and what is the price?
India-specific buyers need confirmed local stock and authorized-channel pricing before purchasing.
MPN
3RT2028-1AD20-0JA0