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Siemens 3RT2028-4AR60 — Contactors

Siemens 3RT2028-4AR60 SIRIUS S0 Power Contactor, 480V 34A AC

MPN3RT2028-4AR60

Siemens SIRIUS S0 power contactor, 3RT2028-4AR60, 480 V 34 A AC-3, 45 mm wide, screw and snap-on 35 mm DIN rail mount.

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

Specifications

3RT2028-4AR60 — Identification
ParameterValue
Contactor frame sizeS0
3RT2028-4AR60 — 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
3RT2028-4AR60 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz400 V
3RT2028-4AR60 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2028-4AR60 — 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)
3RT2028-4AR60 — 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
3RT2028-4AR60 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2028-4AR60 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2028-4AR60 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2028-4AR60 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

The Siemens 3RT2028-4AR60 is a SIRIUS S0-frame power contactor, rated for switching motor loads at 34 A in AC-3 duty at 480 V. The auxiliary contact block is built in, with ratings from 10 A at 24 V down to 0.3 A at 230 V, covering pilot duty and PLC-level signal switching.

Mounting & Panel Fit

The S0 frame is 45 mm wide, 85 mm tall, 97 mm deep — that 97 mm depth is the dimension to check against enclosure depth when the contactor sits behind a door or gland plate.

Duty Cycles & Coil

Switching frequency depends on duty class: 1,000 operations/hour for AC-1 resistive loads, 750/h for AC-2 and AC-3 motor duty, and 250/h for AC-4 (plugging/inching). The magnet coil connection uses a ring cable lug. Arcing time is 4–16 ms at AC. Coil holds at 400 V at 50 Hz or 440 V at 60 Hz.

Frequently asked questions

What are the key ratings for 3RT2028-4AR60?

The AC-3 motor switching rating is 34 A at 480 V. The auxiliary contact carries 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 220/230 V, 3 A at 400 V, 0.6 A at 440 V, and 2 A at 500 V. Mechanical endurance is 10 million operations typical.

What is the mounting footprint for 3RT2028-4AR60?

Width is 45 mm, height 85 mm, depth 97 mm. It mounts on 35 mm DIN rail per DIN EN 60715 or via screw fixing. Clearance required: 10 mm up/down/forward, 6 mm at the sides.

Where can I buy 3RT2028-4AR60?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What switching frequencies does 3RT2028-4AR60 support?

Up to 1,000 operations/hour for AC-1 resistive loads, 750/h for AC-2 and AC-3 motor duty, and 250/h for AC-4 plugging/inching duty.

MPN
3RT2028-4AR60