Skip to main content
Log in
Siemens 3RT6023-1AC20 — Contactors

Siemens 3RT6023-1AC20 SIRIUS S0 Power Contactor, 24 VAC Coil

MPN3RT6023-1AC20

Siemens SIRIUS S0 power contactor, 3RT6023-1AC20, 24 VAC 50/60 Hz coil, screw terminals, 23 kW at 400 V AC-3, 45 mm width, snap-on DIN rail mount.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT6023-1AC20 — Identification
ParameterValue
Contactor frame sizeS0
3RT6023-1AC20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT6023-1AC20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT6023-1AC20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT6023-1AC20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 63 A
Short-circuit coordination type 2, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT6023-1AC20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 DIN rail according to DIN EN 50022
Side-by-side mountingYes
3RT6023-1AC20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT6023-1AC20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT6023-1AC20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT6023-1AC20 — Specifications
ParameterValue
At AC5 000 1/h

Product details

DIN rail mounting and panel fit

The S0 frame (85 mm high, 97 mm deep) allows side-by-side mounting with zero spacing, so a multi-contactor bank fits a standard 600 mm wide enclosure backplate without crowding.

Motor switching ratings and thermal limits

AC-3 motor switching is rated up to 690 V, delivering 23 kW at 400 V and 40 kW at 690 V at 60 °C ambient. The 1 000 cycles/hour maximum for AC-3 duty matches typical conveyor or pump cycling; AC-4 (inching/plugging) is capped at 300 cycles/hour to protect the contacts.

Auxiliary contact block ratings

Built-in auxiliary contacts handle 6 A at 24 V, 10 A at 230 V, and 3 A at 400 V AC — enough for a PLC input or a small pilot relay. The 0.25 A at 50 Hz and 0.28 A at 60 Hz figures likely reflect the coil holding current.

Frequently asked questions

Will 3RT6023-1AC20 drop into a panel specified around 3RT6023-1AB00 without rewiring?

Both are S0-frame contactors with the same 45 mm width, 85 mm height, and 97 mm depth, so the mechanical fit is identical. The 1AB00 uses a 24 VDC coil versus the 1AC20's 24 VAC — verify the control transformer and rectifier before swapping.

MPN
3RT6023-1AC20