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Siemens 3RT1035-1BB40 — Contactors

Siemens 3RT1035-1BB40 SIRIUS Power Contactor, 24 VDC, S2 Fra

MPN3RT1035-1BB40

Siemens SIRIUS power contactor, 3RT1035-1BB40, S2 frame, 24 VDC coil, screw terminals, 22 kW at 500 V AC-3, IP20 front.

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

3RT1035-1BB40 — Identification
ParameterValue
Contactor frame sizeS2
3RT1035-1BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V35 A
Rated value @ 400 V3 A
Rated value @ 500 V22 kW
Rated value @ 690 V11.4 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
3RT1035-1BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1035-1BB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1035-1BB40 — 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
3RT1035-1BB40 — 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
3RT1035-1BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1035-1BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1035-1BB40 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

Its 24 VDC coil holds at 10 A and drops out below 18 V — standard for PLC-driven 24 V control buses. The AC-3 rating of 22 kW at 500 V tells you it handles standard three-phase induction motors up to that power; at 690 V the same contactor is rated 11.4 kW, so the voltage derating is already baked in. At AC-3 the switching rate is 1,000 operations per hour; at AC-4 it is 300 per hour.

DIN rail fit and wiring

The S2 frame footprint is 55 mm wide, 112 mm high, and 130 mm deep. The terminal enclosure is rated IP00, meaning the connection points are not sealed — the front face carries IP20 for finger-safe touch protection once wired. The minimum wire size at 40 °C is 16 mm² — that's the smallest conductor that carries the full rated current without exceeding the terminal temperature rise.

Frequently asked questions

What compliance documentation does the 3RT1035-1BB40 carry?

The RoHS compliance date is 05/01/2012, covering EU substance restrictions. The SIRIUS series typically carries UL, CSA, and CE marks as standard for industrial control equipment, though specific certification listings are not detailed in this record.

MPN
3RT1035-1BB40