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Siemens 3RT1017-2MB42-0KT0 — Contactors

Siemens 3RT1017-2MB42-0KT0 SIRIUS S00 Contactor, 24 VDC, 8.5

MPN3RT1017-2MB42-0KT0

Siemens SIRIUS S00 power contactor, 3RT1017-2MB42-0KT0, 24 VDC coil, spring-loaded terminals, 8.5 A AC-4 at 400 V, IP20, 45 mm wide.

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

3RT1017-2MB42-0KT0 — Identification
ParameterValue
Contactor frame sizeS00
3RT1017-2MB42-0KT0 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V5.5 kW
Rated value @ 690 V5.5 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
3RT1017-2MB42-0KT0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1017-2MB42-0KT0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1017-2MB42-0KT0 — 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
3RT1017-2MB42-0KT0 — 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
3RT1017-2MB42-0KT0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT1017-2MB42-0KT0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1017-2MB42-0KT0 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

It carries a 24 VDC coil with a holding power of 1.4 W, and its main circuit uses spring-loaded terminals accepting 2x (0.25 to 2.5 mm²) solid or stranded wire. For motor switching duty, the contactor is rated 8.5 A at AC-4 at 400 V — that's the full reversing or plugging current, not just the running load. The AC-12 resistive rating goes up to 10 A. At 24 VDC the coil draws its closing and holding power at 1.4 W, so the control transformer can be sized lean.

IP20 finger-safe protection on the front and terminals means it can sit in a standard IP54 enclosure without additional shrouding.

For type 1 coordination (contactor may need replacement after fault), use a 35 A gL/gG fuse.

Frequently asked questions

What is the closest functional second-source for 3RT1017-2MB42-0KT0?

The closest peer in the same SIRIUS S00 family is the 3RT1016-2AP02, but the 3RT1017-2MB42-0KT0 uses a 24 VDC coil with spring-loaded terminals, while the 3RT1016-2AP02 typically uses screw terminals and a different coil voltage. Verify coil voltage and terminal type before substituting.

Where can I buy 3RT1017-2MB42-0KT0 and how is it quoted?

This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmation is provided at quote time.

Will 3RT1017-2MB42-0KT0 drop into a panel specified around 3RT1016-2AP02?

Both are S00 frame size with the same 45 mm width and DIN rail mounting, so the physical fit is identical. The difference is the coil voltage and terminal type — verify your control voltage is 24 VDC and that spring-loaded terminals are acceptable before swapping.

MPN
3RT1017-2MB42-0KT0