3RT2526-1AD20 - Siemens
power contactor, AC-3, 25 A, 11 kW / 400 V, 4-pole, 42 V AC, 50/60 Hz, main contacts: 2 NO + 2 NC, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S0
Specifications
Identification
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
Ratings & Performance
| 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 |
Control & Coil
| Parameter | Value |
|---|---|
| Control supply voltage type | AC |
| Rated value @ 50 Hz | 0.25 |
| Rated value @ 50 Hz | 42 V |
Contacts & Poles
| Parameter | Value |
|---|---|
| Main poles | 4 |
| Main NO contacts | 2 |
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
Protection & Coordination
| 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 |
Connection & Mounting
| 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 |
Durability
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 10 000 000 |
| Durability with aux. switch block (cycles, typ.) | 10 000 000 |
Environmental
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
Mechanical
| Parameter | Value |
|---|---|
| Width | 61 mm |
| Height | 85 mm |
| Depth | 97 mm |
Specifications
| Parameter | Value |
|---|---|
| At AC | 4 ... 16 ms |
Frequently asked questions
What are the electrical specifications of the Siemens 3RT2526-1AD20?
Buyers must confirm 25 A / 11 kW @ 400 V, 4-pole, 42 V AC coil and aux contact count before selecting it for a panel or replacement.
Is the 3RT2526-1AD20 still active or discontinued, and is there a PCN/EOL notice?
Obsolescence and last-time-buy timing directly drive allocation risk and spares strategy for installed-base users.
What is a form-fit-function equivalent or cross reference for the 3RT2526-1AD20?
Maintenance and MRO teams need a qualified alternate to avoid line-down events when stock is constrained or EOL is declared.
Where can the 3RT2526-1AD20 be bought from an authorized distributor with current stock and price?
Sourcing buyers must compare authorized stock, pricing, and lead time to mitigate counterfeit and allocation risk.
What is the wiring diagram and terminal/torque specification for the 3RT2526-1AD20?
Panel builders need screw-terminal pinout, wire gauge, and torque values to build compliant panels without rework.
Which accessories (aux blocks, link bars, EMC filters) are compatible with the 3RT2526-1AD20?
Engineers and VFD commissioners need confirmed Sirius accessory PNs to avoid mid-project discontinuations and integration errors.