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Siemens 3RT1023-3AF00 — Contactors

Siemens 3RT1023-3AF00 SIRIUS Power Contactor, 3 NO, 24 VDC C

MPN3RT1023-3AF00

Siemens SIRIUS power contactor, size S0, 3 NO main contacts, 24 VDC coil, 45 mm width, screw terminals, IP20 front, current production.

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

3RT1023-3AF00 — Identification
ParameterValue
Contactor frame sizeS0
3RT1023-3AF00 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V4.5 kW
Rated value @ 690 V5.5 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
3RT1023-3AF00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz110 V
3RT1023-3AF00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1023-3AF00 — 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
3RT1023-3AF00 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Side-by-side mountingYes
3RT1023-3AF00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1023-3AF00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1023-3AF00 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth90 mm

Product details

For straight AC-3 motor starting, the power ratings are 4.5 kW at 500 V and 5.5 kW at 690 V.

Main circuit terminals accept screw-type connections: solid or stranded 2x (0.25 to 2.5 mm²) or 2x (2.5 to 6 mm²), with a maximum of 2x 10 mm². For AWG, that's 2x (16 to 12) or 2x (14 to 10), or 1x 8. Short-circuit coordination: type 2 requires a gL/gG fuse rated 25 A; type 1 allows up to 63 A. Side-by-side mounting is allowed with a 6 mm gap at the side, so you can pack them tight on the rail without derating.

Frequently asked questions

What is the depth of 3RT1023-3AF00?

The depth is 90 mm.

What wire sizes does the 3RT1023-3AF00 accept on the main terminals?

Screw terminals accept solid or stranded 2x (0.25 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm². AWG equivalents are 2x (16 to 12), 2x (14 to 10), or 1x 8.

Will 3RT1023-3AF00 drop into a panel specified for 3RT1023-1AL20 without rewiring?

Both are size S0 contactors on the same 45 mm footprint with screw terminals and 35 mm DIN rail mounting. The main difference is the coil voltage: 3RT1023-3AF00 uses 24 VDC, while the 1AL20 variant uses a different coil. If the panel wiring and control voltage match 24 VDC, the swap is mechanical and electrical drop-in.

Where can I buy 3RT1023-3AF00?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RT1023-3AF00