Skip to main content
Log in
Siemens 3RT2018-1BP42 — Contactors

Siemens 3RT2018-1BP42 SIRIUS Power Contactor, Size S00, 24 V

MPN3RT2018-1BP42
Active

Siemens SIRIUS 3RT2018-1BP42 power contactor, Size S00, 24 VDC coil, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715.

Siemens 3RT2018-1BP42 datasheet (PDF)
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

3RT2018-1BP42 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-1BP42 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V11.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2018-1BP42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2018-1BP42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-1BP42 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 50A (690V,100kA), aM: 25A (690V,100kA), BS88: 50A (415V,80kA)
Short-circuit coordination type 2, fusegG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2018-1BP42 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid0.5 ... 4 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 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 60715
Side-by-side mountingYes
3RT2018-1BP42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-1BP42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-1BP42 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm

Product details

It is rated for 10 A at 24 VDC, with DC-13 switching capability down to 0.3 A at 220 V. Mechanical life is typical 30,000,000 operations. The contactor accepts solid or stranded conductors 0.5 to 4 mm², and dual conductors 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm².

Maximum switching rates vary by duty: 1,000 operations per hour at AC-1 (resistive), 750/h at AC-2 and AC-3 (motor starting/running), 750/h at AC-3e, and 250/h at AC-4 (plugging/inching). DC switching times are 7 to 13 ms.

Frequently asked questions

Where can I buy 3RT2018-1BP42 and how is it quoted?

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

What are the key ratings for 3RT2018-1BP42?

It is a Size S00 power contactor with a 24 VDC coil, rated 10 A at 24 VDC, 2 hp at 230 V, and 3 A at 400 V. Mechanical life is 30,000,000 operations typical.

What is the mounting method for this contactor?

Screw and snap-on mounting onto 35 mm standard mounting rail per DIN EN 60715.

MPN
3RT2018-1BP42