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Siemens 3RT2028-2XJ40-0LA2 — Contactors

Siemens 3RT2028-2XJ40-0LA2 SIRIUS Power Contactor, DC Coil,

MPN3RT2028-2XJ40-0LA2
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Siemens SIRIUS power contactor, size S0, 3RT2028-2XJ40-0LA2, DC coil 72 V, spring-type terminals, 45 mm width, 107 mm depth.

$120.65Ref. price · indicative, final on quote
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

3RT2028-2XJ40-0LA2 — Identification
ParameterValue
Contactor frame sizeS0
3RT2028-2XJ40-0LA2 — 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
3RT2028-2XJ40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2028-2XJ40-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT2028-2XJ40-0LA2 — 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)
3RT2028-2XJ40-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (1 ... 10 mm²)
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2028-2XJ40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2028-2XJ40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2028-2XJ40-0LA2 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth107 mm

Product details

Integrator's first look

Spring-type terminals on both coil and main contacts mean no screw torque to verify — strip, insert, release.

The DC coil at 72 V rated value with a pickup ratio of 0.7 (initial value) means the coil pulls in reliably at about 50 V and holds down to that threshold — useful if your DC bus has droop under load. Arcing time is a tight 10 ms, which keeps contact wear predictable in DC switching. Switching frequency maxes at 750 1/h for AC-1, AC-2, AC-3, and AC-3e duty; drop to 250 1/h for AC-4 (plugging/inching). That AC-4 ceiling is the real limiter if you're jogging a motor repeatedly — plan the cycle rate around it.

DC switching capability across voltages

For DC load switching, the contactor is rated at 10 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 5 hp rating at 230 V is an AC motor reference — for DC circuits, use the current/voltage table directly. These are the make/break capacities; for continuous current, the main contact rating (18...8 A range) governs.

Spring-type terminals accept solid conductors 2x (1...10 mm²) and stranded 2x (0.5...2.5 mm²). Clearance distances: 10 mm upward, forward, and downward; 6 mm at the side. The auxiliary switch is included (yes), so no separate add-on for status feedback. Size S0 frame keeps the footprint compact for multi-contactor groups.

Frequently asked questions

Who supplies 3RT2028-2XJ40-0LA2 and how is it quoted for volume purchases?

This part is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

What is 3RT2028-2XJ40-0LA2's listed depth on this component line?

The depth is 107 mm, with a width of 45 mm and height of 102 mm, fitting the S0 contactor frame size.

What compliance documentation does this brand provide for 3RT2028-2XJ40-0LA2?

As a Siemens SIRIUS product, this contactor is designed to meet applicable IEC and UL standards typical for industrial control equipment. Specific RoHS, REACH, UL, or IEC declarations are available from Siemens documentation upon request through the supply channel.

MPN
3RT2028-2XJ40-0LA2