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Siemens 3RT5035-1BB40 — Contactors

Siemens 3RT5035-1BB40 SIRIUS Power Contactor, 24 VDC, 55 mm

MPN3RT5035-1BB40

Siemens SIRIUS, power contactor, size S2, 3RT5035-1BB40, 24 VDC coil, screw terminals, 55 mm width, 130 mm depth.

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

3RT5035-1BB40 — Identification
ParameterValue
Contactor frame sizeS2
3RT5035-1BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 690 V11.4 kW
Rated value @ 230 V6 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT5035-1BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT5035-1BB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT5035-1BB40 — 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
3RT5035-1BB40 — 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
3RT5035-1BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT5035-1BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT5035-1BB40 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

At 400 V and 60 °C ambient, this contactor is rated for 38 kW motor output; at 690 V and 60 °C, it handles 66 kW. The coil holds at 24 VDC nominal, drawing 6 A at rated value.

The 55 mm width and 130 mm depth let it fit standard S2 contactor spacing on the DIN rail — plan for that footprint when laying out a multi-contactor motor control center. Rated for AC-3e switching up to 690 V, it handles the inductive load of squirrel-cage motors during starting and running. The 63 A gL/gG fuse recommendation gives you the short-circuit coordination baseline for the branch circuit.

Mounting and wiring notes

Main circuit terminals accept 2x (0.75 to 16 mm²) solid or stranded wire, or 2x (18 to 2 AWG).

Frequently asked questions

Where can I buy 3RT5035-1BB40 and how do I get a price?

This part is 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 offer.

What is 3RT5035-1BB40's listed depth (130 mm) on this component line?

The depth is 130 mm. Combined with the 55 mm width and 112 mm height, it fits the standard S2 contactor footprint on 35 mm DIN rail.

What compliance documentation does this brand provide for 3RT5035-1BB40?

The part carries a substance prohibitance date of 03/01/2017, indicating RoHS compliance. As a Siemens SIRIUS product, it is designed to meet relevant IEC and UL standards for industrial control equipment.

MPN
3RT5035-1BB40