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Siemens 3RT1045-3AP60 — Contactors

Siemens 3RT1045-3AP60 SIRIUS Power Contactor, 45 kW at 500 V

MPN3RT1045-3AP60

Siemens SIRIUS 3RT1045-3AP60 power contactor, size S3, screw-type terminals, 45 kW at 500 V AC-3, 21.1 kW at 690 V, IP20 front, screw and snap-on mounting onto 35 mm and 75 mm 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

3RT1045-3AP60 — Identification
ParameterValue
Contactor frame sizeS3
3RT1045-3AP60 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V66 A
Rated value @ 400 V3 A
Rated value @ 500 V45 kW
Rated value @ 690 V21.1 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
3RT1045-3AP60 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz220 V
3RT1045-3AP60 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1045-3AP60 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 250 A
Short-circuit coordination type 2, fusefuse gL/gG: 160 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1045-3AP60 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (2.5 ... 16 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm and 75 mm standard mounting rail
Side-by-side mountingYes
3RT1045-3AP60 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1045-3AP60 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1045-3AP60 — Mechanical
ParameterValue
Width70 mm
Height146 mm
Depth139 mm
3RT1045-3AP60 — Specifications
ParameterValue
At AC10 ... 25 ms

Product details

The screw-type terminals on the main current circuit accept solid conductors from 2x (0.25... 2.5 mm²) and stranded conductors up to 2x (10... 50 mm²), covering a wide range of motor feeder cables.

Rated at 45 kW at 500 V AC-3 and 21.1 kW at 690 V AC-3, this contactor handles standard three-phase induction motors up to those power levels. The maximum mechanical switching frequency at AC-3 is 1 000 operations per hour, adequate for most conveyor and pump cycles.

Environmental and protection specs

IP20 on the front with the cover or box terminal installed; the terminal area itself is IP00, so the contactor must be mounted inside an enclosure that provides the required system IP rating.

Frequently asked questions

Who supplies 3RT1045-3AP60 and how is it quoted for volume purchases?

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

What are the key ratings of 3RT1045-3AP60?

Rated 45 kW at 500 V AC-3 and 21.1 kW at 690 V AC-3, with a maximum mechanical switching frequency of 1 000 operations per hour at AC-3. Screw-type terminals accept solid 2x (0.25... 2.5 mm²) and stranded 2x (10... 50 mm²).

Will 3RT1045-3AP60 drop into a panel specified around 3RT1044-1FB46?

Both are SIRIUS size S3 contactors with similar mounting footprints on 35 mm or 75 mm rail, but verify terminal type and coil voltage — the 3RT1045-3AP60 uses screw terminals, while the 3RT1044-1FB46 may differ. Check the auxiliary contact configuration before swapping.

What compliance documentation does Siemens provide for 3RT1045-3AP60?

Siemens typically provides a declaration of conformity for IEC/EN 60947-4-1, plus RoHS and REACH compliance statements. The specific certificates for this order code are available on request.

MPN
3RT1045-3AP60