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Siemens 3RT2017-2FB44-3MA0 — Contactors

Siemens SIRIUS 3RT2017-2FB44-3MA0 Power Contactor, Size S00,

MPN3RT2017-2FB44-3MA0
Active

Siemens SIRIUS power contactor, 3RT2017-2FB44-3MA0, size S00, 24 VDC coil, spring-type terminals, rated for AC-3 switching at 750 cycles/h.

$36.83Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2017-2FB44-3MA0 — Identification
ParameterValue
Contactor frame sizeS00
3RT2017-2FB44-3MA0 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2017-2FB44-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2017-2FB44-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2017-2FB44-3MA0 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 50A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)
Short-circuit coordination type 2, fusegG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2017-2FB44-3MA0 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid0.5 ... 4 mm²
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2017-2FB44-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2017-2FB44-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2017-2FB44-3MA0 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth121 mm

Product details

The 24 VDC coil with spring-type terminals means no screw tightening — strip the wire, push it in, and the cage clamps it. Rated for AC-3 duty at 750 operating cycles per hour, this contactor handles typical three-phase motor starts without excessive wear on the contacts. Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with a compact footprint of 45 mm wide, 70 mm high, and 121 mm deep — fits standard panel spacing without crowding adjacent devices.

The AC-3 switching frequency of 750 cycles/h is the practical limit for motor starting under load — exceeding it accelerates contact wear. For resistive loads (AC-1), the contactor can cycle up to 1 000 times per hour. DC breaking capability is specified per voltage: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 3 A at 400 V. These are not AC ratings — DC arcs are harder to extinguish, so the current limits drop as voltage rises. If your circuit is DC, match the voltage column exactly.

Wiring and integration

Spring-type terminals accept solid or stranded conductors from 0.5 to 4 mm², or 2 x (0.5 to 4 mm²) for looping through. No screwdriver needed for the power side — strip to the right length and push in. That's the minimum air gap to adjacent metalwork or live parts. This variant ships without an auxiliary switch block. If you need feedback contacts for the PLC or status indication, an auxiliary switch block (side-mounted) must be ordered separately and snaps onto the contactor's side slots.

Frequently asked questions

What is the depth of this contactor?

The depth is 121 mm.

What conductor sizes does the spring terminal accept?

Solid or stranded conductors from 0.5 to 4 mm², or two conductors of the same range (2 x 0.5 to 4 mm²).

Does this contactor include an auxiliary contact block?

No, this variant ships without an auxiliary switch. An auxiliary block must be ordered separately and mounted on the side.

MPN
3RT2017-2FB44-3MA0