We Buy Power Circuit Breakers

Offer individual power breakers or an organized spare inventory

We buy eligible used and surplus low-voltage power circuit breakers from sellers across the United States. An inquiry can cover a single spare, unused project devices or breakers released during a distribution upgrade. Identify what you own and want to sell, rather than sending only the capacity of the switchgear they once served. Purchase review starts with the actual devices and their condition.

For a mixed spare inventory, group quantities by manufacturer and full catalog number. Keep fixed units separate from drawout units, even when their front panels look alike. Tell us whether each breaker is loose, packaged or still installed, and whether its original cradle remains available. That inventory defines a more useful sale lot than a photograph of several unidentified breakers on a warehouse shelf.

Identify UL 1066 devices, not every large-looking breaker

This page focuses on US low-voltage power circuit breakers associated with UL 1066. Eaton's switchgear comparison distinguishes them from the typical UL 489 molded-case and insulated-case devices used in switchboards. Siemens also publishes separate UL 1066 power-breaker and UL 489 insulated-case ratings within its WL documentation. A familiar brand or shared family name does not settle the device classification.

Supply the standard designation when existing labels or factory paperwork show it. Include the complete model suffix and serial number; these are more informative than calling every heavy breaker an air breaker. Miniature and general molded-case breaker stock is outside this page's specific scope. Medium-voltage vacuum breakers should likewise be identified separately rather than mixed into a low-voltage power-breaker inventory.

Separate frame capacity from the installed plug and trip settings

Siemens WL publishes UL 1066 frame examples from 800 through 6,000 A. These figures identify breaker frame capacity, not the continuous bus amperes of a complete lineup. An assembly drawing with a large bus rating cannot replace the identification of a smaller feeder breaker removed from that assembly. Use the breaker's own markings and matching records wherever available.

The installed rating plug supplies another important ampere value. Siemens lists plug choices from 200 through 1,600 A for specified 1,600 A frames. A 1,600 A frame with an 800 A plug therefore needs both numbers in the inventory; adjustable protective pickup settings are another field. Record the trip-unit model as well. Do not change a plug or setting merely to make the sales description match a desired amperage.

Keep voltage and fault duty attached to each breaker

Known operating voltage helps describe prior application, while maximum voltage describes an equipment limit. Siemens WL documentation gives nominal-system examples of 208, 240, 480 and 600 V, with specified maximum design ratings of 635 V for non-fused designs and 600 V for fused designs. Retain that distinction when offering a device formerly used on a 480 V service.

Fault-current ratings also depend on the exact breaker and voltage. Siemens' UL 1066 table lists an H-class 800 A frame example with 85 kA rms symmetrical interruption at 508 VAC and 65 kA at 635 VAC. Its separate short-time withstand rating is 65 kA for one second. These are manufacturer examples, not ratings assigned to your lot. Submit matching label data instead of advertising the highest kA number found in a family brochure.

Describe the drawout breaker and its cassette separately

A drawout sale may include only the removable breaker, or the breaker plus its matching cradle or cassette. Eaton's Magnum manual describes rear primary finger clusters that connect to stationary cassette stabs, along with separate secondary connections. State which portions remain with your lot. A breaker without its cassette is not the same package as a complete drawout assembly.

Fixed construction needs a different completeness description. Eaton explains that its fixed Magnum DS version lacks the drawout levering device and primary and secondary disconnects; its primary connections are bolted. Do not call those absent drawout features missing parts on a fixed unit. Catalog numbers, terminal arrangements and original drawings support identification, but equal amperage or similar dimensions do not establish interchangeability with another manufacturer's compartment.

Include trip equipment, controls and protective covers in the inventory

List the electronic trip unit and rating plug actually supplied with each breaker. Identify available shunt-trip and closing coils, spring-charging motors and undervoltage releases, including their documented control voltages. Siemens catalogs these as distinct options. A motor voltage is not the main-circuit voltage, and an accessory mentioned in a purchase specification may no longer be installed on the device being sold.

Describe the front cover, trip-unit cover and other deadfront protective pieces shown in existing photographs. Note missing arc chutes, damaged secondary connectors or absent handles without attempting a disassembly survey. For a cassette, list any included shutters, arc hood, keys and loose accessories separately. Keep parts associated with their identified breaker; a box of unmatched trip units should not be represented as complete operational equipment.

Disclose service history and storage condition honestly

Distinguish unused surplus from previously operated breakers. Give the known removal date, storage conditions and reported operating problems. Disclose flooding, corrosion, heat damage, broken housings or modifications. A breaker removed during a successful upgrade has a different history from one removed after a fault, but neither description by itself proves present operating readiness.

Dated maintenance and test reports are useful when they identify the offered serial number and configuration. Include known trip-unit replacements or repairs so an older report is not mistaken for documentation of the current setup. Missing labels, uncertain history and incomplete controls can affect purchasing interest. Describe uncertainty directly instead of presenting untested stock as tested, rebuilt or ready for installation.

Use existing records without opening energized equipment

Start with purchase records, existing nameplate images and photographs taken when the breaker was safely accessible. An inventory entry can connect a device number to its serial number, frame, plug and trip model. Never open energized compartments, remove covers, rack a breaker or operate its mechanism to gather sales information. Any electrical access or removal belongs with qualified personnel following site procedures, not an informal photo request.

Compare the net transaction for the exact breaker lot

Commercial interest depends on identification, condition, completeness and demand, not a fixed price per frame ampere. Provide the location ZIP, availability date, documented weight and packaging status. Explain whether loading equipment is available and who will prepare loose breakers or cassettes for transport. Confirm removal, packing, loading and freight responsibilities alongside payment terms in the accepted agreement. A headline purchase amount is not the net result when significant handling costs remain with the seller.