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Siemens 3RT2028-1AH00 — Contactors

Siemens SIRIUS 3RT2028-1AH00 Power Contactor, Size S0, 34 A

MPN3RT2028-1AH00
Active

Siemens SIRIUS, Size S0 power contactor, 3RT2028-1AH00, 34 A at 480 V, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail.

Siemens 3RT2028-1AH00 datasheet (PDF)
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

3RT2028-1AH00 — Identification
ParameterValue
Contactor frame sizeS0
3RT2028-1AH00 — 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
3RT2028-1AH00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz48 V
3RT2028-1AH00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2028-1AH00 — 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)
3RT2028-1AH00 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
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 60715
Side-by-side mountingYes
3RT2028-1AH00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2028-1AH00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2028-1AH00 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2028-1AH00 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

It is rated to carry 34 A at 480 V (cite:) and switches loads at up to 1,000 operations per hour in AC-1 duty (cite:), 750/h in AC-3 motor duty (cite:).

The 45 mm width (cite:) and 97 mm depth (cite:) fit standard panel layouts; the mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward (cite:). Side clearance of 6 mm (cite:) is needed for heat dissipation — factor that into your DIN-rail fill.

Key ratings in context

The 34 A at 480 V rating (cite:) governs the motor full-load current it can switch in AC-3 duty. The main contacts accept conductor sizes 16 to 8 AWG (cite:). Auxiliary switch is included (cite:).

Frequently asked questions

Where can I buy the 3RT2028-1AH00 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — no stock or price figures are carried on this listing.

What is the depth of the 3RT2028-1AH00?

The depth is 97 mm (cite:), which fits standard 100 mm deep enclosures with clearance for wiring.

What conductor sizes does the 3RT2028-1AH00 accept?

Solid or stranded conductors from 1 to 10 mm² (cite:), and for the auxiliary circuit, 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) (cite:).

MPN
3RT2028-1AH00