Skip to main content
Siemens 3RT2023-1CC20 — Contactors

Siemens 3RT2023-1CC20 SIRIUS Power Contactor, Size S0, 24 VD

MPN3RT2023-1CC20
Active

Siemens SIRIUS power contactor, 3RT2023-1CC20, size S0, 24 VDC coil, screw-type terminals, 45 mm width, 97 mm depth.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT2023-1CC20 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-1CC20 — 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
3RT2023-1CC20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2023-1CC20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-1CC20 — 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)
3RT2023-1CC20 — 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
3RT2023-1CC20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-1CC20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-1CC20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2023-1CC20 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Its compact footprint — 45 mm wide, 85 mm high, 97 mm deep — leaves room for adjacent devices in a crowded enclosure. The auxiliary contact block is built in, saving a separate add-on slot.

Rated for AC-3 switching at up to 1000 operating cycles per hour, this contactor handles motor loads in start-run duty without overheating the coil or main contacts. The AC-4 rating drops to 300 cycles/h, reflecting the heavier arc wear during reversing or inching. The auxiliary contacts are rated at 10 A at 24 V, 3 A at 400 V, and 0.3 A at 220 V — covering typical PLC-level signals and small relay loads. The arcing time is held to 10 ms, which helps with contactor-coordination in safety circuits.

The main circuit accepts solid or stranded conductors from 1 to 10 mm²; auxiliary terminals accept two conductors per clamp (0.5 to 2.5 mm²). The screw-type terminals are standard for panel builders — no special tooling required. Clearance spacing: 10 mm above and below, 6 mm to the side.

Frequently asked questions

What are the key dimensions for panel layout?

Width 45 mm, height 85 mm, depth 97 mm. Clearance: 10 mm above/below, 6 mm to the side.

What is the coil voltage and type?

The magnet coil is rated 24 VDC and uses screw-type terminals.

Does it include an auxiliary contact block?

Yes, an auxiliary switch is built into the contactor. No separate add-on module is required for basic signaling.

What wire sizes does the main circuit accept?

Solid or stranded conductors from 1 to 10 mm². Auxiliary terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

MPN
3RT2023-1CC20