50 amp breaker
Circuit Breaker Sourcing is an independent sourcing partner for US business buyers. We collect factory wholesale quotes for a 50 amp breaker once the poles, voltage class, interrupting capacity in kA and panel series are written down. Ampere rating in A and interrupting rating in kA are different quantities; neither is inferred from the other. We do not manufacture devices, hold a price list or claim a listing file as our own.
Request Factory QuotesDocuments to confirm per model
- Ratings on the manufacturer datasheet for that catalog number
- Agency listing status for the exact model, not a family page
- Marking and packaging required at the destination
This site has not verified any proposed model qualification. UL, CSA, CE, IEC or RoHS language belongs on supplier documents for the quoted catalog number. Third-party distributor pages used in research show how ratings are published; they are not our stock, price or warranty.
Turn a 50 amp breaker request into comparable factory quotes
Neighbouring options such as a miniature circuit breaker, a molded case circuit breaker, a double pole breaker or a dual function AFCI/GFCI breaker are different products even when the ampere number matches. The buyer still decides protection type, voltage class and whether a fuse would be acceptable instead of a resettable breaker. Selective coordination and short-circuit current rating (SCCR) of an assembly are engineering conclusions for the installation; we do not certify them.
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Define the duty
State what the 50 amp breaker must protect or switch: branch, feeder or main. Record rated voltage with AC or DC, phase count and frequency in Hz. Record rated current in A and interrupting capacity in kA at that voltage. Name poles and the trip curve or protection type the drawing actually calls for.
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Fix the constraints
Name the panel manufacturer and series, mounting method, terminal wire range in AWG and enclosure context. NEMA type and IP rating are separate enclosure systems; do not treat them as translations of each other. Indoor panelboard space and outdoor washdown space change gasketing, not the advertised ampere number.
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Set the order scope
State quantity per configuration and unit, destination state or postal code, requested timing and the documents that must travel with the shipment. Condition (new versus reconditioned) is a purchase field. Optional budget with currency and unit-or-order basis plus high-end, mid-range, budget or undecided preference can sit in the same requirement note; they are buying instructions, not verified factory grades.
Open the 20 amp breaker inquiry options when the family form still needs pinning, or send a brief from the contact page.
Questions buyers raise before a 50 amp breaker RFQ
Are you the manufacturer?
No. Circuit Breaker Sourcing coordinates independent factory sourcing. We do not act as an original equipment maker, a factory appointment or a US electrical contractor, and we do not perform site installation or energisation.
What do you need from me to start?
A usable brief names product type and application, quantity by specification, rated voltage, current and phase, poles, mounting, enclosure rating and trip interface, destination and requested delivery date, plus documents or sample needs. Interrupting capacity in kA must be written separately from rated current in A.
Can you quote without a model number?
Factories can be approached from electrical duty when catalog numbers are missing, but two prices only mean the same thing after poles, voltage class, interrupting rating, panel series and protection type are aligned. We will not invent a catalog number to force a comparison.
Which part of the specification stays the buyer decision?
You approve the final catalog number, commercial terms, whether a fuse is preferred over a breaker for speed of clearing, and destination compliance. We restate gaps; we do not sign electrical design or local inspection.
Who is buying inside this circuit breaker family
Panel builders
Work from a device schedule and need a 50 amp breaker that matches the listed series, bolt-on or plug-on mounting and the bus rating of the enclosure they are assembling. They need quotes that keep accessories and packing explicit.
Distributors and category managers
Need repeatable supply on stated ratings rather than one-off project substitutions. Quantity breaks, carton counts and whether reconditioned devices are allowed must be written, because specialist reseller pages often treat condition as a dropdown that never appears on the RFQ.
Facility and OEM teams
Need replacements that fit an existing load center or machinery panel. A matching ampere number is not proof of listed combination with the installed series. Trip indicators, residual current device functions and dual-function AFCI/GFCI bodies occupy the same slot at different cost and must be named.