The S0 frame measures 45 mm wide by 102 mm high by 97 mm deep — that depth keeps it clear of most 80 mm-deep enclosure backplates, but verify clearance if you're mounting it behind a door with a shallow gland plate. Solid or stranded wire from 1 to 10 mm² fits the main contact terminals; the auxiliary contact terminals accept 2x 0.5 to 2.5 mm². Spring-clamp termination means no screw torque to check, but strip length needs to be precise — 8 mm is typical for this class.
Siemens 3RT2027-2AH00 SIRIUS Power Contactor, S0 Frame, 480V
MPN3RT2027-2AH00
Active
Siemens SIRIUS S0 power contactor, 3RT2027-2AH00, spring-type terminals, 27 A at 480 V AC-3, screw and snap-on 35 mm DIN rail mounting.
Source DocumentedChannel stated on listing & quote
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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 | 48 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 | spring-loaded terminals |
| Aux. / control circuit connection | spring-loaded terminals |
| Conductor cross-section, solid | 1 ... 10 mm² |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 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.) | 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 | 102 mm |
| Depth | 97 mm |
| Parameter | Value |
|---|---|
| At AC | 4 ... 16 ms |
Product details
Frequently asked questions
What is 3RT2027-2AH00's listed depth?
The depth is 97 mm. That's the body depth excluding any protruding terminals or arc chambers.
What wire sizes does 3RT2027-2AH00 accept on the main contacts?
Solid or stranded wire from 1 to 10 mm². The auxiliary contacts accept 2x 0.5 to 2.5 mm².
Will 3RT2027-2AH00 drop into a panel specified around 3RT2036-1AC20-ZX95 without rewiring?
Both are SIRIUS S0-frame contactors, so the footprint and DIN rail mounting are identical. The 3RT2027-2AH00 uses spring-type terminals while the 3RT2036-1AC20-ZX95 may use screw terminals — if the panel was wired for screw terminals, the spring-clamp version will still accept the same wire sizes (1 to 10 mm² solid or stranded), so no rewiring is needed at the terminal level. Verify the auxiliary contact configuration matches your control circuit.
MPN
3RT2027-2AH00