Skip to main content
Log in
Siemens 3RT2028-1AL20-ZW97 — Contactors

Siemens 3RT2028-1AL20-ZW97 SIRIUS Power Contactor, S0, 24 VD

MPN3RT2028-1AL20-ZW97
Active

Siemens SIRIUS power contactor, size S0, 3RT2028-1AL20-ZW97, 24 VDC coil, screw-type terminals, 45 mm width, 97 mm depth, current lifecycle stage.

Siemens 3RT2028-1AL20-ZW97 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2028-1AL20-ZW97 — Identification
ParameterValue
Contactor frame sizeS0
3RT2028-1AL20-ZW97 — 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
3RT2028-1AL20-ZW97 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz230 V
3RT2028-1AL20-ZW97 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2028-1AL20-ZW97 — 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)
3RT2028-1AL20-ZW97 — 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
3RT2028-1AL20-ZW97 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2028-1AL20-ZW97 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2028-1AL20-ZW97 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth97 mm
3RT2028-1AL20-ZW97 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

It is rated for main contacts at 16 A to 8 A and includes an auxiliary switch.

Ratings and operating conditions

Maximum switching frequency varies by duty: 1,000 ops/h for AC-1 (resistive), 750 ops/h for AC-2 and AC-3 (motor starting/running), and 250 ops/h for AC-4 (plugging/inching).

Wiring and clearances

Solid and stranded wire range is 1 to 10 mm². For auxiliary circuits, two conductors of 0.5 to 1.5 mm² or 0.75 to 2.5 mm² are accepted. Minimum clearances: 10 mm upwards, downwards, and forwards; 6 mm at the side. Arcing time is 4 to 16 ms at AC, with a specified arcing time of 10 ms.

Frequently asked questions

Where can I buy 3RT2028-1AL20-ZW97 and get a price?

This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation.

What is the depth of 3RT2028-1AL20-ZW97?

The depth is 97 mm.

What wire sizes does 3RT2028-1AL20-ZW97 accept?

Solid and stranded wire from 1 to 10 mm² for main contacts; auxiliary circuits accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

Will 3RT2028-1AL20-ZW97 drop into a panel specified for 3RT2016-1AG62?

Both are SIRIUS power contactors in size S0 with screw-type terminals and 35 mm DIN rail mounting, so panel cutouts and wiring should be compatible. However, verify the coil voltage and main contact ratings against your specific application — the 3RT2028-1AL20-ZW97 uses a 24 VDC coil and is rated for main contacts at 16 to 8 A.

MPN
3RT2028-1AL20-ZW97