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Siemens 3RT2047-1AH24 — Contactors

Siemens 3RT2047-1AH24 SIRIUS Power Contactor, Size S3, 24 VD

MPN3RT2047-1AH24
Active

Siemens SIRIUS power contactor, Size S3, 3RT2047-1AH24, 24 VDC coil, screw-type terminals, auxiliary switch, screw and snap-on mounting on 35 mm DIN rail.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2047-1AH24 — Identification
ParameterValue
Contactor frame sizeS3
3RT2047-1AH24 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V97 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V20 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2047-1AH24 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.38
Rated value @ 50 Hz48 V
3RT2047-1AH24 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2047-1AH24 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 200A (690V,100kA), aM: 100A (690V,100kA), BS88: 160A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2047-1AH24 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2.5 ... 16 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2047-1AH24 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2047-1AH24 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2047-1AH24 — Mechanical
ParameterValue
Width70 mm
Height140 mm
Depth195 mm
3RT2047-1AH24 — Specifications
ParameterValue
At AC10 ... 21 ms

Product details

The 24 VDC coil is controlled via screw-type terminals, and the contactor includes an integrated auxiliary switch for status feedback or interlocking. The contactor accepts a wide conductor range — solid from 2.5 to 16 mm² and stranded from 6 to 70 mm² for the main circuit — which covers most panel wiring from control to power distribution.

Duty-cycle capability — the number that governs real use

The headline switching frequency varies by duty class: 900 cycles/h at AC-1 (resistive), 850 at AC-3 (standard motor start/run), 350 at AC-2 (slip-ring motor), and 200 at AC-4 (plugging/inching). For most conveyor, pump, and fan applications, the AC-3 rating of 850 cycles/h is the practical limit — it tells you the contactor can handle frequent starts without overheating the arc chamber. The auxiliary contact ratings are specified per voltage: 6 A at 24 V DC, 2 A at 48 V DC, 1 A at 110 V DC, 0.9 A at 125 V DC, 0.3 A at 220 V DC, and 3 A at 400 V AC. These are the maximum switching currents for the auxiliary circuit — important when feeding PLC inputs or pilot lights.

The contactor measures 70 mm wide, 140 mm high, and 195 mm deep.

Frequently asked questions

What is the closest functional alternative to 3RT2047-1AH24?

The 3RT1055-6QF35 is a peer in the SIRIUS family but differs in coil voltage, terminal type, and auxiliary contact configuration. A direct drop-in replacement without rewiring should be verified against the specific panel wiring and control voltage.

What compliance documentation is available for 3RT2047-1AH24?

As a Siemens SIRIUS product, it typically carries CE, UL, CSA, and RoHS/REACH declarations. Specific certificates should be confirmed at time of order against the required jurisdiction.

How do I get current pricing and availability for 3RT2047-1AH24?

Submit an RFQ through this listing. Pricing and lead time are confirmed at quote time based on current market conditions and available inventory.

MPN
3RT2047-1AH24