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Siemens 3RT2517-1BB40 — Contactors

Siemens 3RT2517-1BB40 SIRIUS Contactor, Size S00, 24 V Coil,

MPN3RT2517-1BB40
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Siemens SIRIUS 3RT2517-1BB40, Size S00 contactor, 24 V DC coil, screw-type terminals, rated 10 A at 24 V and 230 V, 3 A at 400 V.

$66.07 – $131.97Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2517-1BB40 — Identification
ParameterValue
Contactor frame sizeS00
3RT2517-1BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 230 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2517-1BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2517-1BB40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2517-1BB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 35 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 20A (690V, 100kA)
Aux. switch short-circuit protection, fusefuse gG: 10 A
3RT2517-1BB40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Side-by-side mountingYes
3RT2517-1BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2517-1BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2517-1BB40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RT2517-1BB40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

Rated 10 A at both 24 V and 230 V, with a 3 A rating at 400 V, this is the go-to for switching smaller motor loads, resistive heaters, or solenoid banks in a control cabinet.

The 10 A rating at 24 V and 230 V tells you this contactor handles moderate current in both low-voltage DC and standard AC line applications. At 400 V it's rated 3 A — useful for three-phase motor circuits at that voltage. The mechanical life of 30 million operations and AC switching rate of 10 000 cycles per hour (1 000 per hour at AC-1 maximum) mean it's built for high-cycle applications like packaging lines or conveyor sorters. Arcing time runs 10 to 15 ms, DC switching time 7 to 13 ms — numbers to check if you're timing interlock sequences. The coil picks up at 0.8 of rated voltage and drops out at 1.1 of full-scale value — standard for 24 V DC coils, meaning it holds in reliably down to about 19.2 V and releases above 26.4 V.

Mounting and wiring flexibility

Wire sizes accepted: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or 2x 4 mm² solid or stranded — covers most panel wiring up to 4 mm².

Frequently asked questions

Where can I buy 3RT2517-1BB40 and how is it quoted?

This part is sourced through independent industrial automation distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quote — no stock figures or lead-time numbers are published here.

MPN
3RT2517-1BB40