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Siemens 3RT1033-1BB40-1AA0 — Contactors

Siemens 3RT1033-1BB40-1AA0 SIRIUS S2 Power Contactor, 24 VDC

MPN3RT1033-1BB40-1AA0

Siemens SIRIUS S2 power contactor, 3RT1033-1BB40-1AA0, 24 VDC coil, screw-type terminals, 55 mm wide, snap-on DIN rail mount.

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

3RT1033-1BB40-1AA0 — Identification
ParameterValue
Contactor frame sizeS2
3RT1033-1BB40-1AA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V11 kW
Rated value @ 690 V9.5 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1033-1BB40-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1033-1BB40-1AA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1033-1BB40-1AA0 — 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
3RT1033-1BB40-1AA0 — 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), max. 2x (0.75 ... 4 mm²)
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 standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1033-1BB40-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1033-1BB40-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1033-1BB40-1AA0 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

AC-4 at 400 V is 15.5 A, covering plugging and inching duty where the contactor opens under full motor current. That's fast enough for most sequencing applications but worth noting if you're coordinating with PLC scan cycles or safety relay timing. The enclosure is IP20 on the front, IP00 at the terminals — meaning the wiring zone needs to be inside a cabinet or protected from accidental contact.

RoHS compliance date is May 1, 2012, so it meets the EU directive. No UL or CSA marks are listed in the spec sheet, but the SIRIUS line typically carries IEC ratings for global panels. If your project requires a specific agency approval, confirm at quote time.

Dimensions are 55 mm wide, 112 mm high, 130 mm deep. That's a standard S2 footprint — it shares the same mounting hole pattern and terminal layout as other SIRIUS S2 contactors, so swapping in a different coil voltage or auxiliary block doesn't require re-drilling the subpanel. That gives flexibility for both control wiring (smaller gauges) and power wiring (larger gauges) without needing adapter lugs.

Frequently asked questions

What is the closest functional second-source to 3RT1033-1BB40-1AA0?

The 3RT1044-1FB46 is a physically larger SIRIUS contactor (S3 frame vs S2) with a different coil voltage and higher current ratings. It will not drop into the same DIN rail footprint without panel modification — the mounting hole pattern and width differ. For a direct swap, stay within the S2 frame and 24 VDC coil family.

Where can I buy 3RT1033-1BB40-1AA0 and how is it quoted?

Sourced and quoted to order through independent industrial distribution. Availability and current pricing are confirmed at quote time against an RFQ — no stock count or price is published here.

What compliance documentation does this contactor carry?

RoHS compliance is confirmed with a substance prohibition date of May 1, 2012. The SIRIUS series is designed to IEC standards; specific UL, CSA, or CCC certifications are not listed in the spec sheet and should be verified against the project's requirements.

MPN
3RT1033-1BB40-1AA0