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Siemens 3RT1033-1BB40 — Contactors

Siemens 3RT1033-1BB40 SIRIUS Power Contactor, 24 VDC Coil, 5

MPN3RT1033-1BB40

Siemens SIRIUS power contactor, size S2, 24 VDC coil, screw-type terminals, 55 mm width, IP20 front, 130 mm depth.

$572.83Ref. price · indicative, final on quote
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 — Identification
ParameterValue
Contactor frame sizeS2
3RT1033-1BB40 — 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 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1033-1BB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1033-1BB40 — 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 — 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 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1033-1BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1033-1BB40 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

It carries a 24 VDC coil and is rated for AC-3 duty at 400 V to deliver 11 kW, and at 690 V to deliver 9.5 kW — so it handles standard three-phase induction motors up to those power levels.

The S2 frame is 55 mm wide, 112 mm tall, and 130 mm deep, so it fits a standard 55 mm DIN slot. Screw-type terminals on the main circuit accept stranded conductors up to 2x 25 mm²; the coil and auxiliary terminals accept solid wire from 0.5 to 4 mm². Pollution degree 3 (conductive pollution) means it is suited for conventional industrial environments without sealed enclosures.

Frequently asked questions

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

The 3RT1044-1FB46 is a larger-frame SIRIUS contactor (S3 size) with a 24 VDC coil and higher current ratings — it will not drop into the same DIN footprint without panel modification. For a direct footprint match, stay within the S2 frame family.

What compliance documentation does Siemens provide for 3RT1033-1BB40?

The part is RoHS compliant with a substance prohibition date of 05/01/2012. Standard Siemens documentation includes a CE declaration and the manufacturer's RoHS/REACH statement.

Where can I buy 3RT1033-1BB40?

The 3RT1033-1BB40 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.

MPN
3RT1033-1BB40