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Siemens 3RT1017-1MB42-0KT0 — Contactors

Siemens 3RT1017-1MB42-0KT0 SIRIUS Power Contactor, 24 VDC Co

MPN3RT1017-1MB42-0KT0

Siemens SIRIUS, power contactor, size S00, 3RT1017-1MB42-0KT0, 24 VDC coil, 5.5 kW rated at 400 V AC-3, screw terminals, 45 mm width.

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

3RT1017-1MB42-0KT0 — Identification
ParameterValue
Contactor frame sizeS00
3RT1017-1MB42-0KT0 — 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
3RT1017-1MB42-0KT0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1017-1MB42-0KT0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1017-1MB42-0KT0 — 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
3RT1017-1MB42-0KT0 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1017-1MB42-0KT0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RT1017-1MB42-0KT0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1017-1MB42-0KT0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The 24 VDC coil draws 1.4 W during both closing and holding, so the inrush is the same as the sealed power — no extra surge on the DC supply. Pickup and dropout voltages follow the standard IEC 60947-4-1 envelope; the coil holds at nominal and drops out reliably below the release threshold. For a 24 VDC bus, this contactor pairs cleanly with a PLC digital output or a solid-state relay without needing a separate coil suppression network, though a free-wheel diode across the coil is still good practice if the driving output lacks one.

Main circuit terminals are screw-type, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded copper. AWG equivalents are 2x (20 to 16), 2x (18 to 14), or 1x 12. The IP20 finger-safe terminal shrouds are standard for panel-mount gear — no special tooling needed beyond a common screwdriver.

Short-circuit coordination

For Type 2 coordination (contactor remains fully functional after a fault), the limit is 20 A gL/gG.

Frequently asked questions

What is the rated motor power at 400 V AC-3?

5.5 kW at 400 V AC-3. At 500 V and 690 V AC-3 it is also rated 5.5 kW.

What is the coil voltage and power draw?

24 VDC coil with 1.4 W closing and 1.4 W holding power. The inrush equals the sealed power, so no surge on the DC supply.

What wire sizes does the screw terminal accept?

2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid or stranded. AWG equivalents: 2x (20 to 16), 2x (18 to 14), or 1x 12.

Where can I buy 3RT1017-1MB42-0KT0?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RT1017-1MB42-0KT0