Price of PartsINDUSTRIAL PRICE INDEX
Siemens

6ES5-928-3UB21

Verified market

Market snapshot

Prices updated 9 Oct 2026 · next refresh 9 Nov
$250
Low
$1,942
High
Sigma Surplus — $2504D Controls — $383PLC Department — $680Classic Automation — $719PLCHardware.com — $828Superior Lighting — $889Polberis Sp Z o.o. — $1,062IQElectro — $1,190Relectric.com — $1,414AeliyaMarineTech.com — $1,500Radwell.com — $1,942Sigma SurplusSigma Surplus$2504D Controls4D Controls$383PLC DepartmentPLC Department$680Classic AutomationClassic Automa…$719PLCHardware.comPLCHardware.com$828Superior LightingSuperior Light…$889 · MEDIANPolberis Sp Z o.o.Polberis Sp Z …$1,062IQElectroIQElectro$1,190Relectric.comRelectric.com$1,414AeliyaMarineTech.comAeliyaMarineTe…$1,500Radwell.comRadwell.com$1,942

Median $889 · 11 sellers · $639 below median at the lowest

$ Compare your quote against 11 current asking prices.

Asking prices for the exact catalog number 6ES5-928-3UB21 currently range from $250 to $1,942 across 11 sellers, observed 9 Oct 2026. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.

Current listings

11 SELLERS · SORTED BY PRICE
SellerConditionPricevs medianListing
Sigma SurplusUSED / REFURB $250.00-72% View offer
4D ControlsUSED / REFURB $383.34-57% View offer
PLC Departmentnot stated $680.00-24% View offer
Classic Automationnot stated $719.00-19% View offer
PLCHardware.comnot stated $828.00-7% View offer
Superior Lightingnot stated $889.08· View offer
Polberis Sp Z o.o.not stated $1,062.45+19% View offer
IQElectronot stated $1,189.80+34% View offer
Relectric.comnot stated $1,413.72+59% View offer
AeliyaMarineTech.comnot stated $1,499.99+69% View offer
Radwell.comNEW $1,941.55+118% View offer

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Condition

AS STATED BY SELLERS
New1
Used / refurbished2
Not stated8

Most industrial listings do not state condition — treat unstated as unknown, not as new. Across 864 comparable parts across the index, used and refurbished units are listed at a median 85% of the new price. These are asking prices, not sold prices, and the spread around that median is wide. Ask the seller to state condition in writing before comparing quotes.

Variants and similar numbers

VERIFY BEFORE ORDERING
Catalog numberRelationshipSellersMedianvs this part
6ES5928-3UB12one character apart7$656-26%
6ES5928-3UB11one character apart5$232-74%
6ES5928-3UA21one character apart2$1,896+113%

These are different products that read almost identically on a purchase order. Google groups them together; we do not. Confirm the exact suffix against the nameplate before ordering.

Frequently asked

How much does a 6ES5-928-3UB21 cost?

As of 9 Oct 2026, the Siemens 6ES5-928-3UB21 is listed from $250 to $1,942 across 11 sellers. The median asking price is $889. Prices are published seller asking prices and are refreshed monthly.

Who sells the 6ES5-928-3UB21?

11 sellers currently list the 6ES5-928-3UB21, including Sigma Surplus, 4D Controls, PLC Department. 11 of them are specialist industrial distributors. The lowest current asking price is $250 from Sigma Surplus.

Why do 6ES5-928-3UB21 prices vary so much?

The highest asking price for the 6ES5-928-3UB21 is 7.8× the lowest. Industrial parts trade in a market where new surplus, refurbished stock and list-price sellers coexist without a shared price reference, so identical catalog numbers are listed at very different prices.