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Siemens 3RT1015-2KB42-ZW98 — Contactors

Siemens 3RT1015-2KB42-ZW98 SIRIUS Power Contactor, 24 VDC, S

MPN3RT1015-2KB42-ZW98

Siemens SIRIUS power contactor, size S00, 3RT1015-2KB42-ZW98, 24 V DC coil, spring-loaded terminals, integrated varistor, AC-3 3.5 kW at 400 V.

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

3RT1015-2KB42-ZW98 — Identification
ParameterValue
Contactor frame sizeS00
3RT1015-2KB42-ZW98 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V6.5 A
Rated value @ 400 V3 A
Rated value @ 500 V3.5 kW
Rated value @ 690 V4 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1015-2KB42-ZW98 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1015-2KB42-ZW98 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1015-2KB42-ZW98 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 35 A
Short-circuit coordination type 2, fusefuse gL/gG: 20 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1015-2KB42-ZW98 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Side-by-side mountingYes
3RT1015-2KB42-ZW98 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT1015-2KB42-ZW98 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1015-2KB42-ZW98 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

It mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022, and its spring-loaded terminals on the main current circuit accept solid or stranded conductors up to 2x 2.5 mm² (or 2x 24-14 AWG). The integrated varistor surge suppressor handles coil suppression internally — no external diode needed, which saves a wiring step and avoids polarity mistakes at 2am. The AC-3 motor switching rating is 3.5 kW at 400 V and 4 kW at 690 V, meaning it handles standard three-phase induction motors up to those power levels in normal starting duty.

Mounting and integration into a panel

The S00 frame is compact at 45 mm wide, 60 mm high, and 73 mm deep — it fits tightly on a DIN rail without crowding adjacent devices. Side-by-side mounting is allowed, and the required side clearance is only 6 mm, so you can pack multiple contactors in a row. This matters when the panel design specifies selectivity with downstream motor protection.

Coil and auxiliary contact details

The DC coil draws 2.3 W both on closing and holding — no power drop after pick-up, so the control transformer must supply continuous 2.3 W per contactor. The auxiliary contact block (integrated in this variant) is rated for 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, covering typical PLC-level signals and small relay loads.

Frequently asked questions

What are the key ratings for this contactor?

AC-3 motor switching: 3.5 kW at 400 V and 4 kW at 690 V. Coil: 24 V DC, 2.3 W. Auxiliary contacts: 10 A at 24 V, 6 A at 230 V. Mechanical life: 30 million operations. Frame size S00, 45 mm wide.

What type of terminals does it have?

Spring-loaded terminals on the main current circuit, accepting 2x (0.25... 2.5 mm²) solid or stranded, or 2x (24... 14) AWG. No screw tightening needed — just strip 8 mm and push in.

Does it have a built-in surge suppressor?

Yes, it includes an integrated varistor surge suppressor across the coil. No external suppression module is required for DC coils.

What coordination fusing is recommended?

For type 2 coordination (no damage): gL/gG 20 A fuse. For type 1 coordination (contactor may need replacement): gL/gG 35 A fuse.

MPN
3RT1015-2KB42-ZW98