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Siemens 3RT1535-1BB40 — Contactors

Siemens 3RT1535-1BB40 SIRIUS Power Contactor, 24 VDC Coil, 4

MPN3RT1535-1BB40

Siemens SIRIUS power contactor, size S2, 3RT1535-1BB40, 24 VDC coil, 40 A rated per NO/NC contact, screw-type terminals, 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

3RT1535-1BB40 — Identification
ParameterValue
Contactor frame sizeS2
3RT1535-1BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
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
3RT1535-1BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1535-1BB40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1535-1BB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 160 A
Short-circuit coordination type 2, fusefuse gL/gG: 80 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1535-1BB40 — 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 (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 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
3RT1535-1BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1535-1BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1535-1BB40 — Mechanical
ParameterValue
Width73 mm
Height112 mm
Depth130 mm

Product details

SIRIUS S2 Contactor for 24 VDC Control

The 40 A rating per contact covers motor starting and general switching in control panels. The 24 VDC coil is standard for PLC-driven or safety-relay control circuits, with a pickup voltage of 0.8 x rated (19.2 V) and a dropout at 1.1 x rated (26.4 V) — wide enough to ride through a sagging 24 V supply.

Main circuit terminals accept stranded conductors from 2x (0.75... 25 mm²) or solid from 2x (0.5... 1.5 mm²) up to 2x (0.75... 4 mm²). Auxiliary and control terminals share the same screw-type design. AWG equivalents for the main contacts are 2x (18... 2).

Frequently asked questions

What are the key ratings of the 3RT1535-1BB40?

It is a size S2 power contactor with a 24 VDC coil, rated 40 A per NO/NC contact, with 6 kV impulse withstand on main and auxiliary circuits. Screw terminals accept up to 25 mm² stranded on the main circuit.

Where can I buy the 3RT1535-1BB40?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What compliance documentation is available for the 3RT1535-1BB40?

RoHS compliance is confirmed with a substance prohibition date of 05/01/2012, covering REACH and similar EU restricted-substance regulations.

MPN
3RT1535-1BB40