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Siemens 3RT2518-2BB40 — Contactors

Siemens SIRIUS 3RT2518-2BB40 Contactor, Size S00, 24 VDC Coi

MPN3RT2518-2BB40
Active

Siemens SIRIUS contactor, size S00, 24 VDC coil, spring-type terminals for main and auxiliary circuits, 45 mm width, current lifecycle stage.

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

3RT2518-2BB40 — Identification
ParameterValue
Contactor frame sizeS00
3RT2518-2BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 230 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2518-2BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2518-2BB40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2518-2BB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 35 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 20A (690V, 100kA)
Aux. switch short-circuit protection, fusefuse gG: 10 A
3RT2518-2BB40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.5 ... 4 mm²)
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT2518-2BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2518-2BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2518-2BB40 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm
3RT2518-2BB40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

Both the main current circuit and the magnet coil use spring-type terminals — no screwdriver torque required for termination, which speeds wiring and reduces loose-connection callbacks on refrigeration or process skids.

Ratings that govern the real load

The DC switching capability is the headline here: at 24 V rated value it handles 10 A, at 48 V and 60 V it switches 2 A, at 110 V it handles 1 A, at 125 V it handles 2 A, at 220 V it handles 0.3 A, at 230 V it handles 10 A, at 400 V it handles 3 A, at 440 V it handles 0.8 A, and at 600 V it handles 0.1 A. These are the currents the contactor can reliably interrupt at each DC voltage level — critical for sizing on DC motor brakes, solenoid valves, or heater contactors in cold storage.

Mounting and spacing flexibility

Clearance requirements are zero in all directions except 6 mm at the side — so it packs tightly on the rail without worrying about arc flash between units.

Frequently asked questions

Where can I buy 3RT2518-2BB40 and how do I get a price?

This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — no stock or price figures are listed here, but a quote can be confirmed at request time.

What is 3RT2518-2BB40's listed depth?

The depth is 73 mm.

What is 3RT2518-2BB40's solid conductor range?

The solid conductor range is 2x (0.5... 4 mm²).

What compliance documentation does this brand provide for 3RT2518-2BB40?

As a Siemens SIRIUS product, this contactor is designed to meet IEC/EN 60947 standards. Documentation typically includes a declaration of conformity and material compliance data (RoHS, REACH) available from Siemens support. Specific certification marks (UL, CSA) should be verified on the nameplate or via the manufacturer's documentation portal.

MPN
3RT2518-2BB40