3RT2526-1BF40 - Siemens
MPN3RT2526-1BF40
Active
power contactor, AC-3, 25 A, 11 kW / 400 V, 4-pole, 110 V DC, main contacts: 2 NO + 2 NC, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S0
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
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 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 | DC |
| 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 | 107 mm |
| Parameter | Value |
|---|---|
| At AC | 5 000 1/h |
Frequently asked questions
What does the suffix -1BF40 mean on the Siemens 3RT2526 contactor?
Decodes coil voltage, terminal type, and contact configuration so buyers don't order the wrong variant.
Is the Siemens 3RT2526-1BF40 still active, and what is its lifecycle successor?
Drives replacement planning and LTB decisions before stock is allocated or discontinued.
Which fuse or circuit breaker provides backup short-circuit protection for the 3RT2526-1BF40?
Required for coordination charts, panel certification, and code-compliant installations.
How do you wire the 1 NO + 1 NC auxiliary contacts of the 3RT2526-1BF40 to a Siemens S7-1200 PLC?
Avoids feedback logic errors and extra wiring documentation across coil variants.
Where can I buy a Siemens 3RT2526-1BF40 with stock confirmation and authorized-distributor pricing?
Direct transactional path for sourcing teams facing allocation risk on Sirius contactors.
What is a form-fit-function replacement for the 3RT2526-1BF40 4-pole 2NO+2NC S0 contactor?
Maintenance techs need a verified substitute since no direct FFF alternate exists in newer Sirius lines.
MPN
3RT2526-1BF40