3RT2526-1BA40 - Siemens
MPN3RT2526-1BA40
Active
power contactor, AC-3, 25 A, 11 kW / 400 V, 4-pole, 12 V DC, main contacts: 2 NO + 2 NC, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S0
StockOut of Stock
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
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 | DC |
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 | 107 mm |
Specifications
| Parameter | Value |
|---|---|
| At AC | 5 000 1/h |
Frequently asked questions
What is the coil voltage of Siemens 3RT2526-1BA40?
Buyers must confirm 12V DC coil matches their control circuit before purchase.
What are the main and auxiliary contact configurations on the 3RT2526-1BA40?
4-pole 2 NO + 2 NC main with 1 NO + 1 NC aux affects wiring design and panel layout.
Is the 3RT2526-1BA40 suitable for AC-3 motor switching?
AC-3 25 A / 11 kW @ 400 V rating determines compatibility with motor loads.
What is the frame size of the RT2526-1BA40 contactor?
S0 frame size affects panel space, DIN rail layout, and accessory compatibility.
How does the 3RT2526-1BA40 differ from the 3RT2526-1BB40?
Differentiating suffix variants prevents ordering the wrong coil voltage or contact version.
Where can I buy the 3RT2526-1BA40 with current stock and price?
Live availability and authorized sourcing reduce risk of counterfeits and obsolescence.
MPN
3RT2526-1BA40