Siemens

6SE7021-8TB51

Name: 6SE7021-8TB51
Brand: Siemens

2 sellers — below our five-seller verification bar

Market snapshot

Prices updated 20 Sep 2026 · next refresh 21 Oct

$2,990

Low

$4,431

High

Median $3,710 · 2 sellers · $720 below median at the lowest

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$ Compare your quote against 2 current asking prices.

Asking prices for the exact catalog number 6SE7021-8TB51 currently range from $2,990 to $4,431 across 2 sellers, observed 20 Sep 2026. Distributor product page: mroelectric.com. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.

Current listings

2 SELLERS · SORTED BY PRICE

Seller	Condition	Price	vs median	Listing
Industrial Automation Co.	not stated	$2,990.00	-19%	View offer
Automation Service	NEW	$4,431.00	+19%	View offer

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Condition

AS STATED BY SELLERS

New	1
Not stated	1

Most industrial listings do not state condition — treat unstated as unknown, not as new. Across 666 comparable parts across the index, used and refurbished units are listed at a median 83% 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 number	Relationship	Sellers	Median	vs this part
6SE7021-8TP50	one character apart	9	$2,200	-41%
6SE7021-3TB61	one character apart	9	$2,406	-35%
6SE7021-0TA51	one character apart	6	$2,401	-35%
6SE7021-8EB61	one character apart	5	$2,974	-20%
6SE7021-8TB61	one character apart	5	$4,031	+9%
6SE7021-3TB51	one character apart	3	$2,970	-20%
6SE7021-8TB31	one character apart	2	$3,023	-19%

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 6SE7021-8TB51 cost?

As of 20 Sep 2026, the Siemens 6SE7021-8TB51 is listed from $2,990 to $4,431 across 2 sellers. The median asking price is $3,710. Prices are published seller asking prices and are refreshed monthly.

Who sells the 6SE7021-8TB51?

2 sellers currently list the 6SE7021-8TB51, including Industrial Automation Co., Automation Service. 2 of them are specialist industrial distributors. The lowest current asking price is $2,990 from Industrial Automation Co..