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Siemens 3RT1023-1AH20 — Contactors

Siemens 3RT1023-1AH20 SIRIUS Power Contactor, 5.5 kW at 690

MPN3RT1023-1AH20

Siemens SIRIUS power contactor, 3RT1023-1AH20, size S0, 5.5 kW at 690 V AC-3, 45 mm wide, screw terminals, snap-on 35 mm DIN rail.

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

3RT1023-1AH20 — Identification
ParameterValue
Contactor frame sizeS0
3RT1023-1AH20 — 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
3RT1023-1AH20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz48 V
3RT1023-1AH20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1023-1AH20 — 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
3RT1023-1AH20 — 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
3RT1023-1AH20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1023-1AH20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1023-1AH20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

The Siemens SIRIUS 3RT1023-1AH20 is a size S0 power contactor rated for 5.5 kW at 690 V AC-3, making it suitable for switching three-phase motor loads up to that power in a standard 400/690 V industrial panel. The contactor carries a mechanical life of 10,000,000 operations.

Ratings and coordination

For AC-3 motor switching at 400 V, the contactor is rated 4 kW; at AC-2 duty (slip-ring motors, resistive-inductive mix) it delivers 4 kW at 400 V, and at AC-4 (plugging, inching) it handles 8.5 A at 400 V. Auxiliary contact ratings cover 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V — useful for control-circuit interfacing. Type 1 coordination (allow weld) uses a 63 A gL/gG fuse.

Frequently asked questions

What compliance documentation does Siemens provide for 3RT1023-1AH20?

Siemens SIRIUS contactors typically carry CE, UL, CSA, and RoHS/REACH declarations. Specific certifications should be confirmed on the manufacturer's declaration portal for this order code.

MPN
3RT1023-1AH20