3RT1055-6SP36 - Siemens
power contactor, AC-3e/AC-3 150 A, 75 kW / 400 V AC (50-60 Hz) / DC Uc: 200-277 V x (0.8-1.1) F-PLC input 24 V DC 3-pole, auxiliary contacts 2 NO + 2 NC drive: electronic main circuit: busbar control and auxiliary circuit: screw terminal
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S6 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 132 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 30 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/DC |
| Rated value @ 50 Hz | 0.6 |
| Rated value @ 50 Hz | 200 ... 277 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: 355 A (690 V, 100 kA) |
| Short-circuit coordination type 2, fuse | gG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | Connection bar |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²) |
| Conductor cross-section, solid or stranded | 2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Mounting method | screw fixing |
| 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 | 120 mm |
| Height | 172 mm |
| Depth | 170 mm |
| Parameter | Value |
|---|---|
| At AC | 115 ... 130 ms |
Frequently asked questions
What is the coil voltage and control range of the Siemens 3RT1055-6SP36?
Specifying the wrong coil voltage (200-277 V AC/DC) causes coil burnout or no-pull-in on install.
What does AC-3e mean for the 3RT1055-6SP36 and how does it differ from AC-3?
AC-3e covers slightly higher overload regimes; engineers must confirm motor duty compatibility before purchase.
How many auxiliary contacts does the 3RT1055-6SP36 have and what type are they?
2 NO + 2 NC auxiliaries dictate feedback wiring to the PLC and interlock logic in the panel design.
Is the 3RT1055-6SP36 still in production and what is its lifecycle status?
Active status confirms availability; lifecycle codes drive sourcing decisions for long-term spares and obsolescence planning.
What is the difference between 3RT1055 and 3RT1056 contactors?
Choosing the wrong frame size (e.g., 150 A vs 185 A) can overload the contactor or waste budget on an oversized unit.
Where can I buy the Siemens 3RT1055-6SP36 with current stock and price?
Buyers need real-time pricing, authorized-channel validation, and lead time before issuing a PO.