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Siemens 3RT1023-1AB00 — Contactors

Siemens 3RT1023-1AB00 SIRIUS Power Contactor, 24 V 50 Hz Coi

MPN3RT1023-1AB00

Siemens SIRIUS 3RT1023-1AB00 power contactor, size S0, 3-pole, 24 V 50 Hz coil, screw terminals, IP20 front, 45 mm width.

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

3RT1023-1AB00 — Identification
ParameterValue
Contactor frame sizeS0
3RT1023-1AB00 — 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 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
3RT1023-1AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RT1023-1AB00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1023-1AB00 — 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
3RT1023-1AB00 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control 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, solid or stranded2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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 standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1023-1AB00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1023-1AB00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Installation altitude, max.2 000 m
3RT1023-1AB00 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

Siemens 3RT1023-1AB00 SIRIUS Power Contactor — 24 V 50 Hz Coil, 3-Pole, Size S0

It carries three normally open main contacts and zero NC main contacts, making it a straight three-pole make device for resistive or motor loads within its rating.

AC-4 at 400 V is 8.5 A — that's the plugging/reversing/inching current limit, so if your application does frequent jogging, stay under 8.5 A per pole. The 24 V 50 Hz coil draws a holding current in the range of 0.8 to 1.1 VA at rated voltage. For type 2 coordination (no-weld under fault), the required upstream fuse is 25 A gL/gG; for type 1 coordination (allow weld but clear fault), it's 63 A gL/gG. That gives you selectivity headroom when sizing branch protection.

Mounting and Integration — DIN Rail, Side-by-Side, No Derating

Dimensions: 45 mm wide, 85 mm high, 91 mm deep — fits standard S0 footprint. Wire ranges: main contacts accept 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), max 2x (0.75...4 mm²) solid; auxiliary contacts accept 2x (1...2.5 mm²), 2x (2.5...6 mm²), max 2x 10 mm² solid or stranded. AWG equivalents for main: 2x (16...12), 2x (14...10), 1x 8; for aux: 2x (20...16), 2x (18...14), 1x 12.

Frequently asked questions

What is the depth of 3RT1023-1AB00?

The depth is 91 mm. Combined with a width of 45 mm and height of 85 mm, it fits the standard S0 contactor footprint.

What solid wire sizes does 3RT1023-1AB00 accept?

Main contacts accept 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), max 2x (0.75...4 mm²) solid. Auxiliary contacts accept 2x (1...2.5 mm²), 2x (2.5...6 mm²), max 2x 10 mm² solid or stranded.

MPN
3RT1023-1AB00