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Siemens 3RT2017-1XF42-0LA2 — Contactors

Siemens 3RT2017-1XF42-0LA2 SIRIUS Power Contactor, 72-125 V

MPN3RT2017-1XF42-0LA2
Active

Siemens SIRIUS power contactor, size S00, 3RT2017-1XF42-0LA2, 72-125 V DC coil, screw-type terminals, 20-12 A main contacts, 45 mm width, 58 mm height, 73 mm depth.

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

3RT2017-1XF42-0LA2 — Identification
ParameterValue
Contactor frame sizeS00
3RT2017-1XF42-0LA2 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2017-1XF42-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2017-1XF42-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT2017-1XF42-0LA2 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG NH 3NA, DIAZED 5SB, NEOZED 5SE: 35 A
Short-circuit coordination type 2, fusegG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2017-1XF42-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
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
3RT2017-1XF42-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2017-1XF42-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2017-1XF42-0LA2 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm

Product details

It carries a 72-125 V DC coil with screw-type terminals, and its main contacts are rated for 20-12 A depending on the duty class. The 45 mm width and 58 mm height let it snap onto a 35 mm DIN rail per DIN EN 50022, with 10 mm clearance needed above and below for arc dissipation.

Coil voltage and switching performance

The DC coil picks up at 70% of rated voltage (about 50 V on a 72 V nominal supply) and drops out at 125% of rated, so it holds in during brownouts down to roughly 50 V and releases cleanly when the control voltage rises above 90 V. Inrush current peaks at 1.1 A, and the operate time runs 25-45 ms with an arcing time of 10-15 ms. That arcing window matters for coordination with upstream fuses or breakers — the contactor clears the arc fast enough to avoid nuisance trips on a typical motor branch circuit.

Contact ratings across voltages

On DC loads, the contactor switches 10 A at 24 V, 2 A at 48 V or 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. For AC motor duty at 230 V it handles 2 hp, and at 480 V it switches 11 A. The AC-4 maximum switching rate is 250 operations per hour, which covers frequent jogging or inching applications.

Screw terminals accept solid or stranded wire: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm². Side clearance is only 6 mm, so you can pack multiple units tight in a row.

Frequently asked questions

Where can I buy 3RT2017-1XF42-0LA2 and what is the lead time?

This contactor is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the latest lead time.

Will 3RT2017-1XF42-0LA2 drop into a panel built for 3RT2016-1AK22?

Both are size S00 contactors on the same 45 mm footprint with screw terminals and snap-on DIN rail mounting, so the mechanical fit is identical. The difference is the coil voltage — 3RT2017-1XF42-0LA2 uses a 72-125 V DC coil, while the 3RT2016-1AK22 uses a different coil voltage. Verify the control circuit voltage before swapping.

What are the key dimensions of this contactor?

Width is 45 mm, height is 58 mm, and depth is 73 mm. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.

What wire sizes does the screw terminal accept?

The screw terminals accept solid or stranded wire in these combinations: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm².

MPN
3RT2017-1XF42-0LA2