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Siemens 3RT2023-2EC20 — Contactors

Siemens 3RT2023-2EC20 SIRIUS Power Contactor, S0, 24 VDC, 10

MPN3RT2023-2EC20
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Siemens SIRIUS power contactor, 3RT2023-2EC20, size S0, 24 VDC coil, spring-type terminals for main and auxiliary contacts, screw and snap-on mounting.

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

3RT2023-2EC20 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-2EC20 — 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
3RT2023-2EC20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2023-2EC20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-2EC20 — 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)
3RT2023-2EC20 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2023-2EC20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-2EC20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-2EC20 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth97 mm
3RT2023-2EC20 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Its 24 VDC coil draws 10 A at the rated value, and the main contacts are rated for AC-3 switching at 400 V up to 3 A — the rating that governs motor load handling.

The AC-3 rating at 400 V is the one that decides whether this contactor handles your motor load — it's rated for 3 A in that duty class, which corresponds to a 1 hp motor at 230 V. The mechanical endurance is 10 million operations, so it's built for high-cycle applications like conveyors or pump stations. The S0 frame size (45 mm wide, 102 mm tall, 97 mm deep) is the standard footprint for this current class — it fits existing S0 panel layouts and busbar systems without modification.

The spring-type coil terminals accept 2x (0.5 to 2.5 mm²) solid or stranded, which matches standard control wiring practice.

Frequently asked questions

What are the key dimensions for panel layout?

The S0 frame measures 45 mm wide, 102 mm tall, and 97 mm deep. Clearance requirements are 10 mm upwards, forwards, and downwards, and 6 mm at the side.

What wire sizes does the coil terminal accept?

The spring-type coil terminals accept solid or stranded conductors from 1 to 10 mm², or 2x (0.5 to 2.5 mm²) for finer wiring.

Does it include an auxiliary contact?

Yes, an auxiliary switch is included as standard, so you can wire feedback directly without an additional add-on block.

MPN
3RT2023-2EC20