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Siemens 3RT5034-1AN20 — Contactors

Siemens 3RT5034-1AN20 SIRIUS Power Contactor, S2, 55 mm

MPN3RT5034-1AN20

Siemens SIRIUS S2 power contactor, 3RT5034-1AN20, screw-type terminals, 55 mm width, 690 V rated insulation voltage, current production.

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

Specifications

3RT5034-1AN20 — Identification
ParameterValue
Contactor frame sizeS2
3RT5034-1AN20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 690 V10 kW
Rated value @ 230 V6 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT5034-1AN20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.42
Rated value @ 50 Hz220 V
3RT5034-1AN20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT5034-1AN20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 125 A
Short-circuit coordination type 2, fusefuse gL/gG: 63 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT5034-1AN20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid or stranded2x (0.75 ... 16 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
3RT5034-1AN20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT5034-1AN20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT5034-1AN20 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth115 mm
3RT5034-1AN20 — Specifications
ParameterValue
At AC5 000 1/h

Product details

The 3RT5034-1AN20: The screw-type terminals on the main current circuit accept 2x (0.75…16 mm²) solid or stranded copper, or 2x (18…2 AWG). That's enough cross-section for the full rated load without pigtailing or parallel feeds.

Motor power at 60 °C — the rating that governs real use

At 60 °C ambient the contactor delivers 18 kW at 230 V, 31 kW at 400 V, and 54 kW at 690 V. These are the numbers to size against if the panel runs warm — the 40 °C ratings (not listed here) would be higher, but the 60 °C figures are the conservative design point for a closed cabinet.

Side-by-side mounting is approved, so a row of S2 contactors packs tight on the rail without thermal gaps.

Frequently asked questions

Where can I buy 3RT5034-1AN20 and how do I get a price?

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

Will 3RT5034-1AN20 drop into a panel specified around 3RT5034-1BW40 without rewiring?

Both are SIRIUS S2 contactors with the same 55 mm width, 115 mm depth, and screw-type terminals, so the footprint and wiring interface are identical. The difference is in the coil voltage and auxiliary contact configuration — verify those match your control circuit before swapping.

What compliance documentation does Siemens provide for 3RT5034-1AN20?

RoHS compliance is confirmed with a substance prohibition date of March 1, 2017. The product carries the SIRIUS brand and is designed to IEC/EN standards for industrial control equipment.

MPN
3RT5034-1AN20