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Siemens 3RT1024-3AL20 — Contactors

Siemens 3RT1024-3AL20 SIRIUS S0 Power Contactor, 5.5 kW at 4

MPN3RT1024-3AL20

Siemens SIRIUS S0 power contactor, 3RT1024-3AL20, screw-type main terminals, spring-loaded auxiliary terminals, 45 mm width, 5.5 kW at 400 V AC-3, 50/60 Hz coil.

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

3RT1024-3AL20 — Identification
ParameterValue
Contactor frame sizeS0
3RT1024-3AL20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V5.5 kW
Rated value @ 500 V7.5 kW
Rated value @ 690 V7.5 kW
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1024-3AL20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1024-3AL20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1024-3AL20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1024-3AL20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1024-3AL20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1024-3AL20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Installation altitude, max.2 000 m
3RT1024-3AL20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth90 mm

Product details

The Siemens 3RT1024-3AL20 is a SIRIUS S0 power contactor built for switching three-phase motors and resistive loads in control panels. Rated for AC-3 duty at 5.5 kW on 400 V (50/60 Hz), it also handles 7.5 kW at 500 V and 690 V — so it covers the common European 400 V three-phase motor range and steps up for 500/690 V applications. That's the difference between a contactor that lives a long life on a pump and one that gets swapped every six months on a reversing conveyor.

Ingress and environment — what the IP ratings mean on the panel

Finger-safe IP20 on the front face, but the terminal area is rated IP00 — bare live parts when the cover is off. That's typical for a panel-mounted contactor: the enclosure provides the overall IP rating, not the component.

Frequently asked questions

What are the motor ratings for 3RT1024-3AL20?

It is rated 5.5 kW at 400 V AC-3, 7.5 kW at 500 V, and 7.5 kW at 690 V. For AC-4 reversing duty, the operational current is 12.5 A at 400 V.

Where can I buy 3RT1024-3AL20 and get a price?

We source this contactor to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.

Will 3RT1024-3AL20 drop into a panel specified for 3RT1023-1AL20?

Both are SIRIUS S0 contactors on the same 45 mm DIN-rail footprint with the same mounting standard (EN 50022). The 3RT1024-3AL20 carries higher AC-3 power ratings (5.5 kW vs the smaller frame's typical 4 kW at 400 V) and uses screw-type main terminals. Panel fit is identical, but verify the coil rating and auxiliary contact configuration match your control circuit.

MPN
3RT1024-3AL20