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Siemens 3RT1023-1AK64 — Contactors

Siemens 3RT1023-1AK64 SIRIUS Power Contactor, Size S0, 4.5 k

MPN3RT1023-1AK64

Siemens SIRIUS 3RT1023-1AK64 power contactor, Size S0, 45 mm width, screw-type terminals, 4.5 kW at 500 V / 5.5 kW at 690 V motor ratings, 2 NO + 2 NC auxiliary contacts.

$31.33Ref. price · indicative, final on quote
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

3RT1023-1AK64 — Identification
ParameterValue
Contactor frame sizeS0
3RT1023-1AK64 — 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
3RT1023-1AK64 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz110 V
3RT1023-1AK64 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1023-1AK64 — 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
3RT1023-1AK64 — 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
3RT1023-1AK64 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1023-1AK64 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1023-1AK64 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth140 mm

Product details

SIRIUS 3RT1023-1AK64 — panel integration notes

Rated for motor duty: 4.5 kW at 500 V (AC-3, 50/60 Hz) and 5.5 kW at 690 V. For AC-2 duty at 400 V, it delivers 4 kW; AC-4 at 400 V is rated 8.5 A. The auxiliary contact block carries 2 NO + 2 NC instantaneous contacts, rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V — covering pilot-duty and PLC interface signals without an add-on module.

Main circuit terminals accept screw-type connections: 2x (1.0–2.5 mm²) solid or 2x (2.5–6 mm²) stranded, max 2x 10 mm². Auxiliary terminals accept 2x (0.5–1.5 mm²) solid or 2x (0.75–2.5 mm²) stranded, max 2x 4 mm². AWG equivalents: main 2x (16–12) solid, 2x (14–10) stranded, 1x 8; aux 2x (20–16) solid, 2x (18–14) stranded.

Frequently asked questions

What is the closest functional second-source for 3RT1023-1AK64?

The 3RT1023-1AL20 is a peer within the same Size S0 frame and SIRIUS family, sharing the same 45 mm width and DIN-rail mounting. The key difference is the coil voltage: 1AK64 uses a 110 V AC 50 Hz / 120 V AC 60 Hz coil, while 1AL20 uses a different coil voltage. Verify coil compatibility before substituting.

How do I get current pricing and availability for 3RT1023-1AK64?

Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through independent distribution channels — no figures are published here.

What are the motor power ratings for 3RT1023-1AK64?

Rated motor power is 4.5 kW at 500 V and 5.5 kW at 690 V, both at 50/60 Hz AC-3 duty.

Will 3RT1023-1AK64 drop into a panel specified around 3RT1023-1AL20 without rewiring?

Mechanically yes — both are Size S0, 45 mm wide, same DIN-rail footprint and screw-terminal layout. But the coil voltage differs: 1AK64 is 110 V AC 50 Hz / 120 V AC 60 Hz. If the panel was wired for a different coil voltage, the control circuit must be re-terminated or a new coil ordered.

MPN
3RT1023-1AK64