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Siemens 3RT2023-1CL24-3MA0 SIRIUS Contactor, S0, 45 mm

Name: 3RT2023-1CL24-3MA0
Brand: Siemens
SKU: 3RT2023-1CL24-3MA0
Availability: LimitedAvailability
Author: Commissioning Cal

MPN3RT2023-1CL24-3MA0

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Siemens SIRIUS 3RT2023-1CL24-3MA0 power contactor, Size S0, 45 mm width, screw-type coil terminals, screw and snap-on mounting on 35 mm DIN rail.

$33.02Ref. price · indicative, final on quote

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Siemens 3RT2023-1CL24-3MA0 datasheet (PDF)

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

Specifications

3RT2023-1CL24-3MA0 — Identification
Parameter	Value
Contactor frame size	S0

3RT2023-1CL24-3MA0 — Ratings & Performance
Parameter	Value
Rated operational current, AC-12, max.	10 A
Rated operational current, AC-4 @ 400 V	8.5 A
Rated value @ 400 V	3 A
Rated value @ 500 V	2 A
Rated value @ 690 V	1 A
Rated value @ 230 V	1 hp
Rated value @ 24 V	6 A
Rated value @ 60 V	2 A
Rated value @ 110 V	1 A
Rated value @ 220 V	0.3 A

3RT2023-1CL24-3MA0 — Control & Coil
Parameter	Value
Control supply voltage type	AC
Rated value @ 50 Hz	0.25
Rated value @ 50 Hz	230 V

3RT2023-1CL24-3MA0 — Contacts & Poles
Parameter	Value
Main poles	3
Main NO contacts	3
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

3RT2023-1CL24-3MA0 — Protection & Coordination
Parameter	Value
Short-circuit coordination type 1, fuse	gG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)
Short-circuit coordination type 2, fuse	gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fuse	gG: 10 A (500 V, 1 kA)

3RT2023-1CL24-3MA0 — Connection & Mounting
Parameter	Value
Main circuit connection	screw-type terminals
Aux. / control circuit connection	screw-type terminals
Conductor cross-section, solid	1 ... 10 mm²
Conductor cross-section, solid or stranded	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting method	screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Side-by-side mounting	Yes

3RT2023-1CL24-3MA0 — Durability
Parameter	Value
Durability (operating cycles, typ.)	10 000 000
Durability with aux. switch block (cycles, typ.)	10 000 000

3RT2023-1CL24-3MA0 — Environmental
Parameter	Value
Operating temperature range	-25 ... +60 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

3RT2023-1CL24-3MA0 — Mechanical
Parameter	Value
Width	45 mm
Height	85 mm
Depth	141 mm

3RT2023-1CL24-3MA0 — Specifications
Parameter	Value
At AC	4 ... 16 ms

Product details

What this SIRIUS contactor brings to a panel

The 3RT2023-1CL24-3MA0: It is rated for 10 million typical mechanical operations, which means it will outlast most of the machinery it switches before the contacts wear. The contactor ships without an auxiliary switch block — plan for a separate 3RT19 series add-on if your circuit needs feedback or a holding contact.

Switching capacity and duty-cycle limits

The maximum switching frequency is 1,000 operations per hour in AC-1, AC-2, and AC-3 duty, but drops to 300 per hour in the harsher AC-4 category (plugging or inching). The 1 hp rating at 230 V gives a quick rule-of-thumb for small single-phase motor loads.

Wiring and mounting flexibility

The coil connection uses screw-type terminals — no push-in here, so keep a screwdriver handy at the panel.

Thermal limits and storage

The arcing time is a tight 10 ms — consistent, not a wide spread — which helps when coordinating with upstream protection.

Frequently asked questions

Does this contactor include an auxiliary contact block?

No — the 3RT2023-1CL24-3MA0 ships without an auxiliary switch. You will need to add a separate 3RT19 series block if your circuit requires feedback or a holding contact.