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Siemens 3RT6015-1KB42 — Contactors

Siemens 3RT6015-1KB42 SIRIUS Coupling Contactor, 24 VDC, 6 A

MPN3RT6015-1KB42

Siemens SIRIUS coupling contactor, size S00, 24 VDC coil, 6 A rated current, screw-type terminals, snap-on 35 mm DIN rail.

Siemens 3RT6015-1KB42 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT6015-1KB42 — Identification
ParameterValue
Contactor frame sizeS00
3RT6015-1KB42 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT6015-1KB42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT6015-1KB42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT6015-1KB42 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 35 A
Short-circuit coordination type 2, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 20 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT6015-1KB42 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
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 50022
Side-by-side mountingYes
3RT6015-1KB42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT6015-1KB42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT6015-1KB42 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm

Product details

The Siemens 3RT6015-1KB42 is a SIRIUS coupling contactor in size S00, designed for switching auxiliary or control circuits in industrial panels.

The 6 A rating at 24 VDC is the continuous current the main contacts can carry in DC control circuits — think PLC outputs, relay coils, or signal isolation. The AC-3 maximum voltage of 690 V and motor power ratings (6 kW at 230 V, 10.5 kW at 400 V, 18 kW at 690 V, all at 60 °C) tell you this contactor can switch three-phase induction motors up to those loads, but the coupling contactor designation means it's primarily used to drive larger contactors or relays, not motor loads directly.

Screw-type terminals accept 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), or 2x 4 mm² solid or stranded; AWG equivalents are 2x (20…16), 2x (18…14), 2x 12.

Frequently asked questions

What is 3RT6015-1KB42's depth and width?

Depth is 73 mm, width is 45 mm, height is 57.5 mm. These dimensions let it fit into a standard 8-module DIN-rail slot with side-by-side mounting allowed.

What compliance documentation does this contactor have?

RoHS compliance is documented with a substance prohibition date of 05/01/2012, covering the EU RoHS directive. The SIRIUS series typically carries UL, CSA, and CE approvals, though specific certs for this order code should be confirmed at quote time.

Where can I buy 3RT6015-1KB42 and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here.

MPN
3RT6015-1KB42