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Siemens 3RT2023-1BE40 — Contactors

Siemens 3RT2023-1BE40 SIRIUS Power Contactor, Size S0, 24 VD

MPN3RT2023-1BE40
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Siemens SIRIUS power contactor, 3RT2023-1BE40, Size S0, 24 V DC coil, screw-type terminals, 45 mm width, 85 mm height, 107 mm depth.

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

3RT2023-1BE40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-1BE40 — 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
3RT2023-1BE40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2023-1BE40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-1BE40 — 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)
3RT2023-1BE40 — 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
3RT2023-1BE40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-1BE40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-1BE40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

It carries a 24 V DC coil with screw-type terminals and includes an auxiliary switch. The contactor is rated for 10 A at 24 V DC and 1 hp at 230 V, with a maximum switching rate of 1 000 operations per hour under AC-1, AC-2, AC-3, and AC-3e duty, and 300 operations per hour under AC-4 duty. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° tilt forward and backward.

The DC breaking capacity is specified at multiple voltages: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. These values define the maximum DC load the contactor can interrupt — important for battery-backed or rectified DC bus circuits where the arc extinguishes differently than AC. Mechanical life is rated at 10 000 000 operations typical, and the contactor operates across -25 to +60 °C ambient, with storage from -55 to +80 °C. Wire ranges: solid or stranded 1... 10 mm², and fine-stranded 2x (0.5... 1.5 mm²) or 2x (0.75... 2.5 mm²). Main contact screw torque is 16... 8 Nm.

The DC operating time (closing + opening) is 15... 18 ms.

Frequently asked questions

What are the key ratings for this contactor?

The 3RT2023-1BE40 is a Size S0 power contactor with a 24 V DC coil, rated 10 A at 24 V DC and 1 hp at 230 V. It has a mechanical life of 10 000 000 operations and operates from -25 to +60 °C.

What is the mounting and clearance requirement?

It mounts on 35 mm DIN rail per DIN EN 60715. Required clearances: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.

What wire sizes does the 3RT2023-1BE40 accept?

Solid or stranded conductors from 1 to 10 mm², and fine-stranded conductors 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

MPN
3RT2023-1BE40