Skip to main content
Log in
Siemens 3RT6028-1AN20 — Contactors

Siemens 3RT6028-1AN20 SIRIUS S0 Power Contactor, 27.5 kW at

MPN3RT6028-1AN20

Siemens SIRIUS S0 power contactor, 3RT6028-1AN20, screw-type terminals, 27.5 kW at 400 V AC-3e, snap-on 35 mm DIN rail.

Siemens 3RT6028-1AN20 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

3RT6028-1AN20 — Identification
ParameterValue
Contactor frame sizeS0
3RT6028-1AN20 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT6028-1AN20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz220 V
3RT6028-1AN20 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT6028-1AN20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 100 A
Short-circuit coordination type 2, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 35 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT6028-1AN20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
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 50022
Side-by-side mountingYes
3RT6028-1AN20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT6028-1AN20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT6028-1AN20 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT6028-1AN20 — Specifications
ParameterValue
At AC5 000 1/h

Product details

Side-by-side mounting allowed, so no forced gaps between contactors in a multi-motor panel. Screw terminals accept 2x 0.5–1.5 mm² or 2x 0.75–2.5 mm² solid or stranded.

Switching Performance and Thermal Limits

Rated for 5,000 operations per hour at AC, with AC-1 max at 1,000 1/h and AC-3/AC-3e max at 750 1/h. AC-4 max is 250 1/h — that's the plugging/inching duty cycle, so keep that in mind if the application involves frequent reversing. Pollution degree 3, insulation voltage rated 690 V. Mechanical life typical 10 million operations.

Frequently asked questions

What is the closest functional alternative to 3RT6028-1AN20 — 3RT6028-1AB00?

The 3RT6028-1AB00 is the same S0 frame and electrical rating but with spring-cage terminals instead of screw-type. It drops into the same panel footprint and DIN rail without rewiring; the only difference is the termination method.

MPN
3RT6028-1AN20