3RT2526-1AD00 - Siemens
power contactor, AC-3, 25 A, 11 kW / 400 V, 4-pole, 42 V AC, 50 Hz, main contacts: 2 NO + 2 NC, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S0
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 10 A |
| 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 | 4 |
| Main NO contacts | 2 |
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Short-circuit coordination type 1, fuse | gG: 63 A (690 V, 100 kA) |
| Short-circuit coordination type 2, fuse | gG: 35 A (690 V, 50 kA) |
| Aux. switch short-circuit protection, fuse | fuse gG: 10 A |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 DIN rail according to DIN EN 50022 |
| 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 | 61 mm |
| Height | 85 mm |
| Depth | 97 mm |
| Parameter | Value |
|---|---|
| At AC | 4 ... 16 ms |
Frequently asked questions
What is the coil voltage and AC-3 rating of the Siemens 3RT2526-1AD00?
Ordering errors between 42 V AC coil variants (-1AD00) and similar suffixes are the most common purchasing mistake.
Does the 3RT2526-1AD00 have mirror contacts and a functional safety rating?
Safety applications require confirmed mirror contact performance and SIL/PL data that is not on the main datasheet.
What is the replacement, successor, or equivalent for the 3RT2526-1AD00?
Buyers and MRO teams need a form-fit-function alternate to avoid downtime during EOL or stock-outs.
How do you wire a Siemens Sirius 3RT2526 4-pole contactor with a 42 V AC coil?
Clear wiring and terminal torque guidance prevents control-circuit miswiring that mimics coil failure.
Is the 3RT2526-1AD00 in stock at authorized Siemens distributors and what is the lead time?
Sirius S0 contactors frequently face allocation; buyers need real-time authorized-channel stock before committing.
How does the 3RT2526-1AD00 coordinate with Sirius 3RW soft starters and VFD bypass contactors?
Combination tables determine whether the contactor is suitable for line/bypass duty in motor starter assemblies.