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Siemens 3RT2028-4AN60 — Contactors

Siemens 3RT2028-4AN60 SIRIUS Power Contactor, S0, 480V 34A A

MPN3RT2028-4AN60

Siemens SIRIUS power contactor, size S0, order code 3RT2028-4AN60, rated 34 A at 480 V AC-3, screw and snap-on 35 mm DIN rail.

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

Specifications

3RT2028-4AN60 — Identification
ParameterValue
Contactor frame sizeS0
3RT2028-4AN60 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V22 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V5 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2028-4AN60 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz200 V
3RT2028-4AN60 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2028-4AN60 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 125A (690V,100kA), aM: 50A (690V,100kA), BS88: 125A (415V,80kA)
Short-circuit coordination type 2, fusegG: 50A (690V,100kA), aM: 25A (690V, 100kA), BS88: 50A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2028-4AN60 — Connection & Mounting
ParameterValue
Main circuit connectionRing cable lug connection
Aux. / control circuit connectionring terminal lug connection
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2028-4AN60 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2028-4AN60 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2028-4AN60 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2028-4AN60 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Part identity and deployment context

Motor-rated current and duty class

Rated 34 A at 480 V in AC-3 duty, this contactor handles motor switching up to that current — the rating that matters for sizing motor starters, not the AC-1 resistive figure. Mechanical switching frequency reaches 750 operations per hour under AC-3 and AC-2 duty, and 250 per hour under AC-4 — the heavier inching/plugging duty class.

Auxiliary contact capability

The built-in auxiliary switch (1 N/O + 1 N/C typical for the S0 frame) is rated for 10 A at 24 V, 2 A at 48/60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 230 V, 3 A at 400 V, 0.6 A at 440 V, and 2 A at 500 V — covering control-circuit voltages from 24 VDC up to 500 VAC.

Frequently asked questions

What is 3RT2028-4AN60's listed depth (97 mm) on this component line?

The depth is 97 mm, width 45 mm, height 85 mm — fits standard S0 contactor footprint.

Will 3RT2028-4AN60 drop into a panel that was specified around 3RT2036-1AC20-ZX95 without rewiring?

Both are S0 frame contactors with the same DIN-rail footprint and screw/snap-on mounting, so the mechanical swap is straightforward. Verify coil voltage and auxiliary contact configuration on your specific variant before ordering.

MPN
3RT2028-4AN60