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Siemens 3RT1024-3BD40 — Contactors

Siemens 3RT1024-3BD40 SIRIUS Power Contactor, S0, 7.5 kW

MPN3RT1024-3BD40

Siemens SIRIUS power contactor, 3RT1024-3BD40, S0 frame, screw terminals, 7.5 kW at 500/690 V, AC-2 5.5 kW at 400 V, AC-4 12.5 A, snap-on DIN rail.

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

3RT1024-3BD40 — Identification
ParameterValue
Contactor frame sizeS0
3RT1024-3BD40 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V3 A
Rated value @ 500 V7.5 kW
Rated value @ 690 V7.5 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
3RT1024-3BD40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1024-3BD40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1024-3BD40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1024-3BD40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Side-by-side mountingYes
3RT1024-3BD40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1024-3BD40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1024-3BD40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth100 mm

Product details

At 500 V and 690 V it delivers 7.5 kW, covering most three-phase induction motors in the 7.5 kW class across standard European voltage levels. The AC-12 rating of 10 A covers resistive and lightly inductive loads in control circuits.

Footprint and integration

Screw-type terminals on the main circuit accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or up to 2x 10 mm² stranded conductors. AWG equivalents are 2x (16 to 12), 2x (14 to 10), or 1x 8. Solid conductors 2x (0.25 to 2.5 mm²) also fit. Front-side protection is IP20 — safe for finger contact in enclosed panels. The terminal area itself is rated IP00, so the contactor needs enclosure protection against dust and tools.

Coil and environmental specs

That simplifies power supply sizing and keeps heat low in the panel.

Protection coordination

This lets you match upstream protection to your plant's coordination philosophy.

Frequently asked questions

What is the depth of 3RT1024-3BD40?

The depth is 100 mm, with a width of 45 mm and height of 85 mm — a compact S0 frame footprint that fits standard panel layouts.

What wire sizes does the 3RT1024-3BD40 accept?

Solid conductors: 2x (0.25 to 2.5 mm²). Stranded: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or up to 2x 10 mm². AWG equivalents: 2x (16 to 12), 2x (14 to 10), or 1x 8.

Where can I buy 3RT1024-3BD40 and how is it quoted?

The 3RT1024-3BD40 is sourced through independent industrial distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

What compliance documentation is available for 3RT1024-3BD40?

As a Siemens SIRIUS product, the 3RT1024-3BD40 carries the standard IEC and UL certifications typical for this series. Specific compliance documentation (RoHS, REACH, UL, IEC) is available on request with the RFQ.

MPN
3RT1024-3BD40