Siemens

6ES7-421-1BL00-0AA0

Name: 6ES7-421-1BL00-0AA0
Brand: Siemens

Verified market

Market snapshot

Prices updated 9 Oct 2026 · next refresh 9 Nov

$79.00

Low

$337

High

Median $153 · 6 sellers · $74.46 below median at the lowest

Been quoted a price? See where it sits

$ Compare your quote against 6 current asking prices.

Asking prices for the exact catalog number 6ES7-421-1BL00-0AA0 currently range from $79.00 to $337 across 6 sellers, observed 9 Oct 2026. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.

Current listings

6 SELLERS · SORTED BY PRICE

Seller	Condition	Price	vs median	Listing
4D Controls	USED / REFURB	$79.00	-49%	View offer
AeliyaMarineTech.com	not stated	$131.09	-15%	View offer
Radwell.com	not stated	$131.92	-14%	View offer
Boyut-Endustriyel	not stated	$175.00	+14%	View offer
PLC-Mall.com	not stated	$206.00	+34%	View offer
Zancot Electronics	not stated	$337.00	+120%	View offer

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Condition

AS STATED BY SELLERS

Used / refurbished	1
Not stated	5

Most industrial listings do not state condition — treat unstated as unknown, not as new. Across 168 comparable parts in SIMATIC S7, used and refurbished units are listed at a median 88% 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
6ES7-421-1BL01-0AA0	one character apart	9	$190	+24%
6ES7421-1EL00-0AA0	one character apart	2	$682	+345%

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 6ES7-421-1BL00-0AA0 cost?

As of 9 Oct 2026, the Siemens 6ES7-421-1BL00-0AA0 is listed from $79.00 to $337 across 6 sellers. The median asking price is $153. Prices are published seller asking prices and are refreshed monthly.

Who sells the 6ES7-421-1BL00-0AA0?

6 sellers currently list the 6ES7-421-1BL00-0AA0, including 4D Controls, AeliyaMarineTech.com, Radwell.com. 6 of them are specialist industrial distributors. The lowest current asking price is $79.00 from 4D Controls.

Why do 6ES7-421-1BL00-0AA0 prices vary so much?

The highest asking price for the 6ES7-421-1BL00-0AA0 is 4.3× 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.

Related SIMATIC S7 parts

10 SHOWN

Catalog number	Sellers	Low	Median	Spread
6ES7870-1AB01-0YA1SIMATIC S7	2	$749	$2,701	+$3,903
6ES7870-1AA01-0YA0SIMATIC S7	2	$1,414	$1,817	+$807
6ES7193-6BP00-0DA0SIMATIC S7	13	$21.31	$39.00	+$39.51
6ES7193-6AR00-0AA0SIMATIC S7	20	$37.50	$79.00	+$103
6ES7214-1AG40-0XB0SIMATIC S7	11	$286	$328	+$141
6ES7193-6BP00-0BA0SIMATIC S7	11	$13.33	$33.76	+$37.07
6ES7131-6BH01-0BA0SIMATIC S7	11	$65.00	$99.29	+$92.14
6ES7136-6BA01-0CA0SIMATIC S7	14	$132	$403	+$983
6ES7155-6AU01-0CN0SIMATIC S7	11	$167	$193	+$128
6ES7331-7KF02-0AB0SIMATIC S7	19	$76.80	$260	+$490