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Siemens 3RT5035-1AN20-1 — Contactors

Siemens 3RT5035-1AN20-1 SIRIUS Power Contactor, AC-3 18.5 kW

MPN3RT5035-1AN20-1

Siemens SIRIUS power contactor, 3RT5035-1AN20-1, AC-3 18.5 kW at 400 V, 3-pole, 220 V AC 50/60 Hz coil, S2 frame screw terminal.

Siemens 3RT5035-1AN20-1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT5035-1AN20-1 — Specifications
ParameterValue
Substance prohibitance04/11/2017

Product details

Siemens SIRIUS 3RT5035-1AN20-1 Power Contactor

The Siemens SIRIUS 3RT5035-1AN20-1 is a three-pole power contactor rated for AC-3 motor duty at 18.5 kW on a 400 V line, with a 220 V AC 50/60 Hz coil.

What the AC-3 Rating Means for Your Motor Load

The 18.5 kW at 400 V AC-3 rating tells you this contactor is sized for a 3-pole induction motor up to that power — typical for pumps, compressors, and conveyors in a 400 V three-phase distribution. AC-3 covers starting and switching off running motors (high inrush, moderate breaking current). The S2 frame carries a 60 A rated operational current at 40 °C ambient, derating to 55 A at 60 °C, so the thermal margin is there for continuous full-load current plus occasional overloads within the coordination limits.

The screw terminals accept 2x (0.75 to 16 mm²) solid or stranded, or 2x (18 to 2 AWG) — enough for the main power wiring on a 60 A circuit.

Frequently asked questions

What is the closest functional second-source for 3RT5035-1AN20-1?

The 3RT5064-6AP36-0TH0 is a higher-rated SIRIUS power contactor (110 kW at 400 V AC-3e) but shares the same S2 frame and screw-terminal design. It will not drop into the same panel without rewiring — the coil voltage, current rating, and auxiliary contacts differ. For a direct fit, stick with the 3RT5035-1AN20-1.

What compliance documentation does this brand provide for 3RT5035-1AN20-1?

The Substance Prohibitance date of 04/11/2017 confirms RoHS and REACH compliance. Siemens typically provides a declaration of conformity and CE marking for EU installations; UL/CSA listing is available on the SIRIUS series but should be verified per the specific variant.

How do I get current pricing and availability for 3RT5035-1AN20-1?

Submit an RFQ through this listing. We source this part through independent distribution channels and confirm availability and current pricing at quote time — no stock figures or lead-time numbers are published here.

MPN
3RT5035-1AN20-1