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Siemens 3RT2015-2VB42 — Contactors

Siemens 3RT2015-2VB42 SIRIUS Coupling Contactor, 24 VDC, Siz

MPN3RT2015-2VB42
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Siemens SIRIUS coupling contactor, 3RT2015-2VB42, size S00, 24 V DC coil, spring-type terminals, 10 A at 24 V DC, screw and snap-on mounting on 35 mm DIN rail.

Siemens 3RT2015-2VB42 datasheet (PDF)
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

3RT2015-2VB42 — Identification
ParameterValue
Contactor frame sizeS00
3RT2015-2VB42 — 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
3RT2015-2VB42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2015-2VB42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2015-2VB42 — 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)
3RT2015-2VB42 — 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
3RT2015-2VB42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT2015-2VB42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2015-2VB42 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm

Product details

The Siemens 3RT2015-2VB42 is a SIRIUS coupling contactor in size S00, designed for switching DC loads in control panels. The 24 V DC coil picks up at 85 % of rated voltage (20.4 V) and drops out at 185 % (44.4 V) — the wide dropout margin keeps it latched through brief sags but releases cleanly on a sustained undervoltage.

Switching capability and duty cycle

Switching frequency depends on load category: 1 000 operations/hour at AC-1 (resistive), 750/h at AC-2 and AC-3 (motor starting/running), and 250/h at AC-4 (plugging/inching). For DC loads, the 24 V DC rating is the one that governs — the 48 V and 60 V ratings drop to 2 A, and at 400 V DC it is 3 A. The contactor is rated for 30 million mechanical operations typical, so it outlasts most panel cycles.

Frequently asked questions

What is the closest functional second-source for 3RT2015-2VB42?

The 3RT2015-1BW42 is a peer in the same SIRIUS S00 frame, but it uses screw terminals rather than spring-type terminals. The coil voltage and main contact ratings differ — verify the 1BW42's coil rating against your 24 V DC requirement before substituting.

Will 3RT2015-2VB42 drop into a panel specified around 3RT2015-1BW42 without rewiring?

The footprint (45 mm width, 70 mm height, 73 mm depth) and DIN-rail mounting are identical, so the mechanical swap is direct. However, the terminal type differs — spring-clamp vs screw — so if the panel wiring uses ferrules or ring terminals, the spring-clamp may require a different strip length or ferrule size.

Where can I buy 3RT2015-2VB42 and how is it quoted?

Sourced through the authorized Siemens distribution channel. Submit an RFQ for volume pricing and lead time; availability is confirmed at quote time.

MPN
3RT2015-2VB42