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Siemens 3RT2023-1BW40 — Contactors

Siemens 3RT2023-1BW40 SIRIUS Power Contactor, Size S0, 48 VD

MPN3RT2023-1BW40
Active

Siemens SIRIUS power contactor, 3RT2023-1BW40, Size S0, 48 VDC coil, screw-type terminals, 45 mm wide, rated 10 A at 24 V / 2 A at 48 V.

Siemens 3RT2023-1BW40 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

3RT2023-1BW40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-1BW40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V1 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2023-1BW40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2023-1BW40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-1BW40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (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)
3RT2023-1BW40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2023-1BW40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-1BW40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-1BW40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

SIRIUS Size S0 power contactor — 48 VDC coil, screw terminals

Rated operational currents: 10 A at 24 V DC, 2 A at 48 V DC, 2 A at 60 V DC, 1 A at 110 V DC, 0.9 A at 125 V DC, 0.3 A at 220 V DC, and 3 A at 400 V AC. The AC-3 switching frequency is rated up to 1 000 operations per hour; AC-4 is limited to 300 per hour. The contactor includes an auxiliary switch and accepts main contact wire sizes from 16 to 8 AWG (solid or stranded 1 … 10 mm²).

Width is 45 mm, height 85 mm, depth 107 mm. Coil pick-up is at 0.8 of rated voltage, drop-out at 1.1 of rated voltage (full-scale value). Wire sizes: solid or stranded 1 … 10 mm² for main contacts; auxiliary contacts accept 2x (0.5 … 1.5 mm²) or 2x (0.75 … 2.5 mm²). Arcing time is 10 ms; DC switching time is 15 … 18 ms.

Frequently asked questions

Will 3RT2023-1BW40 drop into a panel that was specified around 3RT2015-1BW42 without rewiring?

Both are Size S0 SIRIUS contactors with the same 45 mm width and DIN rail footprint, so the mechanical fit is identical. However, the 3RT2023-1BW40 uses a 48 VDC coil versus the 3RT2015-1BW42's coil voltage — verify coil supply compatibility before substitution.

What compliance documentation does this brand provide for 3RT2023-1BW40?

As a SIRIUS product, it typically carries CE, UL, CSA, and RoHS declarations. Specific certs should be confirmed against the nameplate or manufacturer documentation for your shipment.

MPN
3RT2023-1BW40