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Siemens 3RT2015-2KA42 — Contactors

Siemens SIRIUS 3RT2015-2KA42 Coupling Contactor, S00 Frame,

MPN3RT2015-2KA42
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Siemens SIRIUS coupling contactor, size S00, 3RT2015-2KA42, 24 V DC coil, spring-type terminals, 45 mm width, 73 mm depth.

Siemens 3RT2015-2KA42 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

3RT2015-2KA42 — Identification
ParameterValue
Contactor frame sizeS00
3RT2015-2KA42 — 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
3RT2015-2KA42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2015-2KA42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2015-2KA42 — 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)
3RT2015-2KA42 — 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
3RT2015-2KA42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2015-2KA42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2015-2KA42 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm

Product details

The Siemens SIRIUS 3RT2015-2KA42 is a coupling contactor in the S00 frame size, designed for switching auxiliary and control circuits in industrial panels. Rated for 10 A at 24 V DC, it uses spring-type terminals for the magnet coil connection, accepting solid or stranded conductors from 0.5 to 4 mm².

Wiring and terminal details

Spring-type terminals on the magnet coil accept solid or stranded wire 0.5 to 4 mm², or 2x (0.5 to 4 mm²) for parallel feeds. No auxiliary switch is included on this variant, so external auxiliary contact blocks would be needed for status feedback.

Frequently asked questions

What is the closest functional alternative to 3RT2015-2KA42?

The 3RT2015-2SB41 is a close peer in the same S00 frame size, but it uses screw-type terminals instead of spring-type. The 3RT2015-2UB41 also differs in coil voltage. Panel wiring may need minor adjustments if swapping between terminal types.

Where can I buy 3RT2015-2KA42 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the depth of 3RT2015-2KA42?

The depth is 73 mm, with a width of 45 mm and height of 70 mm. Clearance requirements are 10 mm upwards and downwards, 6 mm to the side.

What wire sizes does 3RT2015-2KA42 accept?

Solid or stranded wire from 0.5 to 4 mm², and 2x (0.5 to 4 mm²) for parallel conductors on the coil terminals.

MPN
3RT2015-2KA42