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Siemens 3RT1024-1AR10 — Contactors

Siemens 3RT1024-1AR10 SIRIUS Power Contactor, 3 NO, 12.5 A A

MPN3RT1024-1AR10

Siemens SIRIUS power contactor, Size S0, 3 NO main contacts, screw terminals, 12.5 A AC-4 at 400 V, 7.5 kW at 500 V/690 V, 45 mm width, DIN rail mount.

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

3RT1024-1AR10 — Identification
ParameterValue
Contactor frame sizeS0
3RT1024-1AR10 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V3 A
Rated value @ 500 V7.5 kW
Rated value @ 690 V7.5 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1024-1AR10 — Control & Coil
ParameterValue
Control supply voltage typeAC
3RT1024-1AR10 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1024-1AR10 — 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
3RT1024-1AR10 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1024-1AR10 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1024-1AR10 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1024-1AR10 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

It carries 3 normally-open main contacts and zero NC main contacts — a straight three-pole make configuration for three-phase loads. Across the line, it handles 7.5 kW at both 500 V and 690 V, giving it reach into 690 V industrial networks without derating the power rating. Screw-type terminals on the main circuit accept conductors up to 2x 10 mm² (or 1x 8 AWG), and the auxiliary circuit accepts 2x (0.5 to 4 mm²).

Mounting and integration into a panel

The 45 mm width per pole set is the standard S0 footprint; if you are swapping out an older S0 contactor, the 3RT1024-1AR10 drops into the same rail space. Depth of 91 mm and height of 85 mm mean it clears most standard enclosure depths.

For Type 2 coordination (contactor remains usable after clearing the fault), the maximum fuse drops to 25 A gL/gG. This is the spec the panel designer needs to confirm the upstream protection device. The auxiliary contact ratings cover common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC.

Frequently asked questions

What is the closest functional second-source to 3RT1024-1AR10?

The 3RT1023-1AL20 is a similar SIRIUS S0 contactor but with different coil voltage and auxiliary contact configuration — verify the coil rating and aux contact count before substituting. The 3RT1024-1AR10 drops into the same 45 mm DIN rail footprint as any S0 frame contactor.

What are the key ratings of 3RT1024-1AR10?

The 3RT1024-1AR10 is rated 12.5 A AC-4 at 400 V for plugging/reversing duty, 5.5 kW AC-2 at 400 V, and 7.5 kW at both 500 V and 690 V. It has 3 NO main contacts, screw terminals, and a mechanical life of 10 million operations.

Where can I buy 3RT1024-1AR10 and how is it quoted?

The 3RT1024-1AR10 is sourced and quoted to order against an RFQ through independent industrial automation distribution. Availability and current pricing are confirmed at quote time.

Will 3RT1024-1AR10 drop into a panel specified around 3RT1023-1AL20 without rewiring?

Both are Size S0 contactors with the same 45 mm width and DIN rail mounting, so the mechanical fit is identical. However, verify the coil voltage and auxiliary contact arrangement — the 3RT1024-1AR10 has 3 NO main contacts and specific aux contact ratings that may differ from the 3RT1023-1AL20.

MPN
3RT1024-1AR10