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Siemens 3RT1015-1WB41 — Contactors

Siemens 3RT1015-1WB41 SIRIUS Power Contactor, 24 VDC coil, S

MPN3RT1015-1WB41

Siemens SIRIUS 3RT1015-1WB41 power contactor, size S00, 24 V DC coil with integrated varistor, 10 A rated operational current at 24 V, screw-type terminals, snap-on mounting on 35 mm DIN rail.

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

3RT1015-1WB41 — Identification
ParameterValue
Contactor frame sizeS00
3RT1015-1WB41 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V6.5 A
Rated value @ 400 V3 A
Rated value @ 500 V3.5 kW
Rated value @ 690 V4 kW
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
3RT1015-1WB41 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1015-1WB41 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1015-1WB41 — 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
3RT1015-1WB41 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1015-1WB41 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT1015-1WB41 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1015-1WB41 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The coil draws 1.4 W both on pickup and hold, which is typical for this frame size — steady-state dissipation stays low enough that you can group several contactors on a DIN rail without worrying about heat buildup in the enclosure.

The headline number for sourcing is the rated operational current: 10 A at 24 V (AC-12 duty, resistive loads), 6 A at 230 V, and 3 A at 400 V. For motor switching, the AC-3 rating at 400 V is 3 kW — that's the figure that decides whether this contactor handles a standard 3-phase motor on a 400 V line. If you're switching a 4-pole motor under 3 kW, this fits; above that, step up to the next frame size. If your application does frequent plugging or reversing, use the AC-4 figure, not the AC-3 one. The 6.5 A AC-4 limit means this contactor handles about 2.2 kW of motor load under severe switching duty. For DC switching, the ratings drop fast: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. That's typical for a contactor designed primarily for AC motor duty — don't use it for high-current DC loads above 60 V without checking the curve.

The S00 footprint is 45 mm wide, 57.5 mm tall, 72 mm deep — that's the same width as a single miniature circuit breaker, so it packs tight on a rail. Main circuit terminals are screw-type, accepting 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or up to 2x 4 mm² stranded. AWG: 2x 20–16, 2x 18–14, or 1x 12.

Where it lives in the panel

This is a dry-panel contactor: mount it inside an enclosure rated for the environment, not exposed outdoors or in washdown zones. Mechanical endurance: 30 million cycles typical. Electrical life depends on switching current and voltage. Coil pickup threshold is 0.85 x nominal.

Short-circuit coordination

That's the standard recommendation for the S00 frame — if your panel design calls for Type 2, spec the 20 A fuse upstream.

It's a standard SIRIUS catalog item, broadly stocked across distribution. For BOM-line commitments, the key fit check is the 24 V DC coil voltage and the S00 frame size — if those match your panel layout, the rest of the ratings (10 A AC-12, 3 kW AC-3 at 400 V) are well within typical light-duty motor and resistive load ranges.

Frequently asked questions

What's the closest functional alternative — 3RT1015-1BB42?

The 3RT1015-1BB42 is the same S00 frame contactor but with a 24 V AC coil instead of DC. The mechanical footprint, terminal layout, and main contact ratings are identical. The swap is straightforward if your control circuit can supply 24 V AC instead of DC — just account for the different coil suppression (the -1BB42 typically has a built-in RC snubber for AC, while this -1WB41 has a varistor for DC). No rewiring of the main power circuit needed.

What wire sizes does the screw terminal accept?

Main circuit terminals accept 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or up to 2x 4 mm² stranded. AWG equivalents: 2x 20–16, 2x 18–14, or 1x 12.

MPN
3RT1015-1WB41