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Siemens 3RT2023-2AN24 — Contactors

Siemens 3RT2023-2AN24 SIRIUS Power Contactor, S0 Size, 24 VD

MPN3RT2023-2AN24
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Siemens SIRIUS power contactor, 3RT2023-2AN24, S0 size, 24 VDC coil, spring-type terminals, 45 mm width, 144 mm depth.

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

Specifications

3RT2023-2AN24 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-2AN24 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2023-2AN24 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz220 V
3RT2023-2AN24 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-2AN24 — 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)
3RT2023-2AN24 — 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
3RT2023-2AN24 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-2AN24 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-2AN24 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth144 mm
3RT2023-2AN24 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

It is rated for 24 VDC coil voltage and uses spring-type terminals for the magnet coil connection, which speeds up wiring and eliminates the need for periodic screw retorquing.

The S0 frame size (45 mm wide, 102 mm high, 144 mm deep) fits the standard 35 mm DIN rail per DIN EN 60715, with screw and snap-on mounting. The coil draws 0.25 A at 50 Hz and 0.28 A at 60 Hz at 24 V rated value. That is a low inrush for a contactor this size, so a standard 24 VDC power supply with 6 A output can drive several of these without derating the supply. Switching frequency is rated at 1,000 operating cycles per hour for AC-1, AC-2, AC-3, and AC-3e duty, dropping to 300 cycles per hour for AC-4. For a conveyor or pump motor starting under load (AC-3), you can cycle it every 3.6 seconds continuously. For plugging or inching duty (AC-4), the interval extends to 12 seconds to let the contacts cool. Wire range accepts solid or stranded conductors from 1 to 10 mm², and dual-wire capability for 2x (0.5 to 2.5 mm²). That covers most control wiring up to 6 AWG, so you can land motor leads directly without a terminal block. The -25 °C floor means it is fine for unheated plant areas in most climates, but not for freezer applications without a heated enclosure.

Mounting and Clearance Notes

That gives flexibility for tight enclosures, but keep the arc chamber orientation in mind — the arcing time is 10 ms, and the specified clearances (10 mm upward, 10 mm forward, 10 mm downward, 6 mm sideways) are the minimum to prevent flashover between phases or to grounded metal.

Frequently asked questions

What are the key dimensions for panel layout?

Width is 45 mm, height 102 mm, depth 144 mm. It mounts on 35 mm DIN rail per DIN EN 60715 with screw or snap-on fastening.

What wire sizes does the spring terminal accept?

Solid or stranded conductors from 1 to 10 mm², and dual-wire capability for 2x (0.5 to 2.5 mm²).

What is the switching frequency for motor starting (AC-3)?

Rated at 1,000 operating cycles per hour for AC-3 duty, which allows a cycle every 3.6 seconds continuously.

What clearance is needed around the contactor?

Minimum 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm sideways from the contactor body.

MPN
3RT2023-2AN24