3RT2024-1KB40-1AA0 - Siemens
power contactor, AC-3 12 A, 5.5 kW / 400 V 1 NO + 1 NC, 24 V DC with integrated varistor 3-pole, Size S0 screw terminal suitable for PLC outputs upright mounting position
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S0 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated operational current, AC-4 @ 400 V | 12.5 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 2 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 | DC |
| 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: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA) |
| Short-circuit coordination type 2, fuse | gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA) |
| Aux. switch short-circuit protection, fuse | gG: 10 A (500 V, 1 kA) |
| Parameter | Value |
|---|---|
| Main circuit connection | screw-type terminals |
| Aux. / control circuit connection | screw-type terminals |
| Conductor cross-section, solid | 1 ... 10 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 standard mounting rail according to DIN EN 60715 |
| 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 | 45 mm |
| Height | 85 mm |
| Depth | 107 mm |
Frequently asked questions
What is the AC-3 rating and coil voltage of the 3RT2024-1KB40-1AA0?
Buyers must confirm 12 A / 5.5 kW rating and 24 V DC coil match their load and control voltage before specifying.
What is the difference between 3RT2024-1KB40 and 3RT2024-1KB40-1AA0?
Suffix differences denote coil/terminal options; confusing them leads to wrong-coil or wrong-connection purchases.
Is the 3RT2024-1KB40-1AA0 suitable for direct PLC output connection?
The integrated varistor and 24 V DC coil are designed for PLC-driven switching; confirming this avoids interposing relay cost.
Which size S0 auxiliary contacts fit the Siemens 3RT2024-1KB40-1AA0?
Incorrect aux block selection prevents panel build and forces re-ordering during commissioning.
What replacement or equivalent fits the Siemens 3RT2024-1KB40-1AA0 contactor?
Stock-outs drive buyers to seek cross-references; a vetted equivalent list protects uptime.
Where can I buy 3RT2024-1KB40-1AA0 with current stock and price?
Live availability and distributor pricing are the final conversion trigger for procurement.