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Siemens 3RT2028-1CL24-3MA0 — Contactors

Siemens 3RT2028-1CL24-3MA0 SIRIUS Power Contactor, S0 Frame,

MPN3RT2028-1CL24-3MA0
Active

Siemens SIRIUS 3RT2028-1CL24-3MA0 power contactor, S0 frame size, 24 VDC coil with screw-type terminals, rated for AC-1 through AC-4 switching duty.

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

3RT2028-1CL24-3MA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT2028-1CL24-3MA0 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2028-1CL24-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz230 V
3RT2028-1CL24-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2028-1CL24-3MA0 — 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)
3RT2028-1CL24-3MA0 — 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
3RT2028-1CL24-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2028-1CL24-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2028-1CL24-3MA0 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth141 mm
3RT2028-1CL24-3MA0 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Siemens SIRIUS 3RT2028-1CL24-3MA0 — Power Contactor, S0 Frame, 24 VDC Coil

Rated for AC-1 (resistive) duty at up to 1,000 switching cycles per hour, AC-2 and AC-3 (motor starting) at 750 cycles/hour, and AC-4 (plugging/inching) at 250 cycles/hour. Auxiliary contact ratings are specified per IEC: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. The auxiliary switch is not included as standard — verify if your application requires an add-on block.

Dimensions: 85 mm height, 45 mm width, 141 mm depth. The depth is a key panel-fit dimension — verify against your enclosure depth before specifying.

Arcing time is 10 ms at AC. Main contact gap is 16 to 8 mm.

Frequently asked questions

What is the depth of 3RT2028-1CL24-3MA0?

The depth is 141 mm.

What conductor sizes does the main contact accept?

Solid or stranded conductors from 1 to 10 mm².

MPN
3RT2028-1CL24-3MA0