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Siemens 3RT1033-3BB40 — Contactors

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

MPN3RT1033-3BB40

Siemens SIRIUS power contactor, 3RT1033-3BB40, size S2, 24 VDC coil, screw-type terminals, 11 kW at 500 V AC-3, 55 mm width, DIN EN 50022 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

3RT1033-3BB40 — Identification
ParameterValue
Contactor frame sizeS2
3RT1033-3BB40 — 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
3RT1033-3BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1033-3BB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1033-3BB40 — 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
3RT1033-3BB40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0.75 ... 16 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1033-3BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1033-3BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1033-3BB40 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

For resistive loads (AC-1), the maximum switching rate is 1,200 operations per hour; for the heavy AC-4 duty, that drops to 250 ops/h — a real constraint for a conveyor zone that jogs frequently. The coil draws 10 A at 24 VDC during pick-up, with a pick-up factor of 0.8 and drop-out factor of 1.1.

Screw terminals on the main circuit accept 2x (0.75 to 25 mm²) stranded or 2x (0.25 to 2.5 mm²) solid wire. The auxiliary circuit takes 2x (0.75 to 16 mm²) solid or stranded. At 40 °C, the minimum permissible wire size is 16 mm².

Frequently asked questions

Where can I buy 3RT1033-3BB40 and how do I get a price?

The 3RT1033-3BB40 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is 3RT1033-3BB40's listed depth?

The 3RT1033-3BB40 has a depth of 130 mm, a width of 55 mm, and a height of 112 mm. These dimensions fit the standard SIRIUS S2 contactor footprint.

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

The 3RT1033-3BB40 is RoHS compliant with a substance prohibition date of 05/01/2012. As a SIRIUS product, it meets IEC and UL standards for industrial control equipment. Full declarations and certificates are available through Siemens documentation channels.

Will 3RT1033-3BB40 drop into a panel specified around 3RT1044-1FB46 without rewiring?

No, the 3RT1033-3BB40 is a size S2 contactor, while the 3RT1044-1FB46 is a larger frame size. The 55 mm width and mounting hole pattern differ, so it will not directly swap without panel modifications. Check the specific frame dimensions and terminal locations before substitution.

MPN
3RT1033-3BB40