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Siemens 3RT1517-2BF40 — Contactors

Siemens 3RT1517-2BF40 SIRIUS Power Contactor, 110 V coil, Si

MPN3RT1517-2BF40

Siemens SIRIUS power contactor, Size S00, 3RT1517-2BF40, 110 V AC coil, spring-loaded terminals, 45 mm width, IP20 finger-safe.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT1517-2BF40 — Identification
ParameterValue
Contactor frame sizeS00
3RT1517-2BF40 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1517-2BF40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1517-2BF40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1517-2BF40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 35 A
Short-circuit coordination type 2, fusefuse gL/gG: 20 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1517-2BF40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Side-by-side mountingYes
3RT1517-2BF40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1517-2BF40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RT1517-2BF40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth72 mm

Product details

SIRIUS Size S00 power contactor — 110 V coil, spring-loaded terminals

It uses spring-loaded terminals on the main circuit, accepting 2x (0.25... 2.5 mm²) solid or stranded wire — no screw torque to verify, which speeds panel wiring and reduces loose-connection callbacks. The contactor carries a DC switching table that covers common control voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — these are the figures that govern DC load switching, not the AC-3 motor rating.

Mounting and integration — DIN rail, position, and clearance

That covers most panel layouts without special brackets. At the side, 6 mm clearance to adjacent devices is specified — important when calculating fill factor on a crowded DIN rail. IP20 on the front and at the terminals means finger-safe for the panel builder but not protected against moisture ingress — this is a dry-location device, suitable for enclosed control cabinets.

Auxiliary contacts and switching performance

Built-in auxiliary contacts — one NO and one NC — each rated 12 A. That is enough to drive a pilot light or a PLC input directly without an interposing relay. The contactor is rated for 30 million typical mechanical operations, so it will outlast most panel refreshes. At AC-1 (resistive load) the maximum switching rate is 1 000 cycles per hour; arcing time sits between 10 and 15 ms, and DC dropout time is 7 to 10 ms.

Frequently asked questions

What wire sizes does the spring-loaded terminal accept?

The main circuit terminals accept 2x (0.25... 2.5 mm²) solid or stranded wire. No ferrule is required, but ferruled stranded wire is also accepted within the same range.

MPN
3RT1517-2BF40