Allen-Bradley

509-DOB

Name: 509-DOB
Brand: Allen-Bradley

Verified market ACTIVE

Market snapshot

Prices updated 20 Sep 2026 · next refresh 21 Oct

$579

Low

$2,059

High

Median $1,414 · 5 sellers · $835 below median at the lowest

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$ Compare your quote against 5 current asking prices.

Asking prices for the exact catalog number 509-DOB currently range from $579 to $2,059 across 5 sellers, observed 20 Sep 2026. Distributor product page: santaclarasystems.com. Prices are published seller asking prices; shipping, taxes and negotiated trade pricing are not included.

Current listings

5 SELLERS · SORTED BY PRICE

Seller	Condition	Price	vs median	Listing
Radwell.com	not stated	$578.68	-59%	View offer
Relectric.com	not stated	$616.00	-56%	View offer
ddpartssolution.com	not stated	$1,413.60	·	View offer
Coast to Coast Breaker	NEW	$1,537.09	+9%	View offer
SuperBreakers.com	not stated	$2,059.00	+46%	View offer

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Condition

AS STATED BY SELLERS

New	1
Not stated	4

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
509-TOD	one character apart	9	$207	-85%
5094-MB	one character apart	6	$129	-91%
509-EOD	one character apart	5	$964	-32%
509-DOD	one character apart	2	$858	-39%
509-BOB	one character apart	2	$387	-73%

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 509-DOB cost?

As of 20 Sep 2026, the Allen-Bradley 509-DOB is listed from $579 to $2,059 across 5 sellers. The median asking price is $1,414. Prices are published seller asking prices and are refreshed monthly.

Who sells the 509-DOB?

5 sellers currently list the 509-DOB, including Radwell.com, Relectric.com, ddpartssolution.com. 5 of them are specialist industrial distributors. The lowest current asking price is $579 from Radwell.com.

Why do 509-DOB prices vary so much?

The highest asking price for the 509-DOB is 3.6× 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.