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Siemens 3RT2024-1AU20 — Contactors

Siemens SIRIUS 3RT2024-1AU20 Power Contactor, S0, 24 VDC Coi

MPN3RT2024-1AU20
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Siemens SIRIUS 3RT2024-1AU20, power contactor, size S0, 24 VDC coil, screw-type terminals, 45 mm width, 97 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

3RT2024-1AU20 — Identification
ParameterValue
Contactor frame sizeS0
3RT2024-1AU20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2024-1AU20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz380 V
3RT2024-1AU20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2024-1AU20 — 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)
3RT2024-1AU20 — 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
3RT2024-1AU20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2024-1AU20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2024-1AU20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2024-1AU20 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Integrator Note

It switches loads up to 10 A at 24 VDC and 2 hp at 230 V, making it suited for smaller motor and resistive loads in control panels.

Switching Capacity & Duty

Rated switching capacity varies by voltage: 10 A at 24 VDC, 2 A at 48/60 VDC, 1 A at 110 VDC, and 0.3 A at 220 VDC. For motor loads, it carries a 2 hp rating at 230 V. Maximum mechanical switching frequency is 1 000 operations per hour under AC-1, AC-2, and AC-3 duty; this drops to 300 per hour under AC-4 (frequent inching/plugging).

Wire range: solid or stranded 1 to 10 mm² for main contacts, with dual-wire capability (2x 0.5 to 1.5 mm² or 2x 0.75 to 2.5 mm²). Main contact screws are M4 (size 8). Coil holding power is 0.25 VA at 50 Hz, 0.28 VA at 60 Hz.

Frequently asked questions

What are the key switching ratings for the 3RT2024-1AU20?

It switches 10 A at 24 VDC, 2 A at 48/60 VDC, 1 A at 110 VDC, 0.3 A at 220 VDC, and 3 A at 400 VDC. For motor loads, it is rated 2 hp at 230 V. Maximum switching frequency is 1 000 operations/hour under AC-1/2/3 duty, and 300/hour under AC-4.

Does the 3RT2024-1AU20 include an auxiliary contact?

Yes, it is equipped with an auxiliary switch for status signaling or interlocking.

What is the mounting footprint and clearance needed for the 3RT2024-1AU20?

It is 45 mm wide, 85 mm high, and 97 mm deep. Clearance: 10 mm upwards, downwards, and forwards; 6 mm at the sides. It mounts on a 35 mm DIN rail or via screws.

What wire sizes does the 3RT2024-1AU20 accept?

Main contacts accept solid or stranded wire from 1 to 10 mm². Dual-wire capability: 2x 0.5 to 1.5 mm² or 2x 0.75 to 2.5 mm². Coil terminals are screw-type.

MPN
3RT2024-1AU20