The 3RT2024-2BB40-ZW97: The 24 VDC coil picks up at 0.8 × rated (19.2 V) and drops out below 18 V — standard for 24 V control loops, but if your DC supply is marginal or long-cabled, account for voltage drop. The spring-type terminals save panel-wiring time vs. screw terminals; they accept 1–10 mm² solid or stranded, and 2 × (0.5–2.5 mm²) fine-stranded with ferrule. For DC switching, the contactor is rated 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. The arcing time at DC is 15–18 ms; that matters for inductive loads like DC solenoids or brake coils — the arc must extinguish within the contact gap travel. Mechanical life is 10 million operations; main contact electrical life ranges from 18 million to 8 million depending on load — AC-3 switching at 1000 ops/h is fine for conveyor or pump cycling.
Siemens 3RT2024-2BB40-ZW97 SIRIUS Power Contactor, 24 VDC Co
MPN3RT2024-2BB40-ZW97
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Siemens SIRIUS power contactor, 3RT2024-2BB40-ZW97, 24 VDC coil, S0 frame, spring-type terminals, 10 A at 24 VDC, 2 hp at 230 VAC.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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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 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 | spring-loaded terminals |
| Aux. / control circuit connection | spring-loaded terminals |
| Conductor cross-section, solid | 1 ... 10 mm² |
| Conductor cross-section, solid or stranded | 2x (0.5 ... 2.5 mm²) |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm DIN 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 | 102 mm |
| Depth | 107 mm |
Product details
Frequently asked questions
What wire sizes does the spring terminal accept?
The spring-type terminals accept solid or stranded wire from 1 to 10 mm², and 2 × (0.5 to 2.5 mm²) fine-stranded with ferrule.
What is the clearance needed around this contactor?
Required clearances are 10 mm upwards, forwards, and downwards, and 6 mm at the side — tight enough for dense DIN-rail layouts.
MPN
3RT2024-2BB40-ZW97