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Siemens 3RT2015-1JB42 — Contactors

Siemens 3RT2015-1JB42 SIRIUS Contactor, 24 V DC Coil, 10 A,

MPN3RT2015-1JB42
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Siemens SIRIUS 3RT2015-1JB42, coupling contactor, size S00, 24 V DC coil, screw-type terminals, 10 A rated operational current at 24 V DC, 45 mm width, DIN rail mount.

$22.86Ref. price · indicative, final on quote
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

3RT2015-1JB42 — Identification
ParameterValue
Contactor frame sizeS00
3RT2015-1JB42 — 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
3RT2015-1JB42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2015-1JB42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2015-1JB42 — 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)
3RT2015-1JB42 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid0.5 ... 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 60715
Side-by-side mountingYes
3RT2015-1JB42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT2015-1JB42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2015-1JB42 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm

Product details

SIRIUS Coupling Contactor for 24 V DC Control Circuits

Ratings and Operating Conditions

The 24 V DC coil is the part's defining feature — it pulls in with a typical pickup time of 38 to 65 ms and an arcing time of 10 to 15 ms. The contactor is rated for switching frequencies up to 750 cycles per hour under AC-3 and AC-2 duty, and up to 1000 cycles per hour under AC-1 resistive loads. For DC switching, the rated operational current drops with voltage: 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 230 V.

Mounting and Wiring Clearances

The screw terminals accept solid or stranded conductors from 0.5 to 4 mm², and can handle two conductors per clamp in combinations like 2x 0.5-1.5 mm² or 2x 4 mm². The contactor has no built-in auxiliary switch — that's a separate add-on if needed.

Frequently asked questions

What is the closest functional second-source to the 3RT2015-1JB42?

The 3RT2015-1AT62 is a peer in the same S00 frame with a 24 V coil, but it uses an AC coil instead of DC. The 3RT2015-2HB41 and 3RT2015-2BF42 are also S00 peers but with different coil voltages or terminal types. For a direct DC coil drop-in, the 3RT2015-1JB42 is the specific variant — the AC-coil versions will not pull in reliably on a DC supply.

What is the depth of the 3RT2015-1JB42?

The depth is 73 mm. Width is 45 mm, height is 58 mm.

What wire sizes does the 3RT2015-1JB42 accept?

Solid or stranded conductors from 0.5 to 4 mm². It can also accept two conductors per clamp: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm².

Will the 3RT2015-1JB42 drop into a panel specified for the 3RT2015-1AT62 without rewiring?

Mechanically yes — both are S00 size with the same 45 mm width and DIN rail mount. Electrically, no: the 1JB42 has a 24 V DC coil, while the 1AT62 has a 24 V AC coil. The wiring and power supply must match the coil type. If the panel is wired for AC, the DC coil will not work.

MPN
3RT2015-1JB42