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Siemens 3RT2015-2QB42 — Contactors

Siemens 3RT2015-2QB42 SIRIUS Coupling Contactor, 24 VDC, S00

MPN3RT2015-2QB42
Active

Siemens SIRIUS coupling contactor, size S00, 24 VDC coil, spring-type terminals, 45 mm width, 70 mm height, 121 mm depth.

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

3RT2015-2QB42 — Identification
ParameterValue
Contactor frame sizeS00
3RT2015-2QB42 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V6.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V0.75 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2015-2QB42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2015-2QB42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2015-2QB42 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 35A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)
Short-circuit coordination type 2, fusegG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2015-2QB42 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid0.5 ... 4 mm²
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2015-2QB42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT2015-2QB42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2015-2QB42 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth121 mm

Product details

It uses spring-type terminals for the magnet coil, which means no screw tightening — strip, insert, and the cage clamps the wire. The 24 V rated coil holds reliably, and the DC-13 breaking current at 24 V is 10 A, so it handles inductive DC loads like relay coils or solenoid valves without welded contacts.

Electrical ratings and switching performance

Rated control supply voltage is 24 VDC. For DC-13 duty (switching electromagnets), the contactor breaks 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. At 400 V AC-3 motor duty, it switches 3 A. Maximum switching frequency depends on duty: 1,000 operations per hour at AC-1 (resistive), 750 at AC-2 and AC-3 (motor start/run), and 250 at AC-4 (plugging/inching). The main contacts are rated for 20 to 12 million operating cycles, and the typical mechanical service life is 30 million operations.

Environmental and wiring

Accepts solid or stranded conductors from 0.5 to 4 mm² (single wire) or 2x (0.5 to 4 mm²) for paralleled conductors.

Frequently asked questions

What is the closest functional equivalent if I need a different coil voltage?

The 3RT2015-2BF42 uses a 24 VAC/DC coil but shares the same S00 frame, spring-type terminals, and DIN-rail mounting footprint. The choice between them depends entirely on whether your control circuit is AC or DC.

What are the key dimensions for panel layout?

Width is 45 mm, height is 70 mm, and depth is 121 mm. Clearances required: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.

What wire sizes does it accept?

Solid or stranded conductors from 0.5 to 4 mm², and up to 2x (0.5 to 4 mm²) for paralleled conductors.

Will it drop into a panel designed for the 3RT2015-2BF42?

Yes, mechanically and dimensionally identical — same S00 frame, same spring-type terminals, same 45 mm width, same DIN-rail mounting. The only difference is the coil rating: 24 VDC here versus 24 VAC/DC on the -2BF42. No rewiring needed if your control supply matches.

MPN
3RT2015-2QB42