Mersen A4BY(amp) has 1 recorded cross-reference match across 1 manufacturer. Research equivalent, alternate or similar parts using the listed candidates, and check their source notes before selecting a replacement.
Series reference — complete ordering code required. These entries identify product families. Match the complete ordering code, electrical ratings, dimensions and operating conditions using current datasheets before choosing a product.
1Direct crosses
Updating2nd-degree candidates · Unverified
1alternate manufacturers
1reference sources
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A4BY(amp) series references
Recorded alternatives for this lookup direction. Each source may carry conditions or differences.
Eaton manufacturer-published FuseFinder family/pattern comparison, July 2017 publication 10006, PDF page 1. Original competitor pattern: A4BY(amp); original Bussmann pattern: KLU(amp). This is a family or configurable ordering pattern, not a complete orderable part number. Literal (amp), (X), range limits, terminal suffixes and alternate-form text remain source parameters; no unlisted amperage, pole-count or suffix variants have been generated. Only the printed pair and its stated current/mounting scope are referenced. Product-family manufacturer identity was independently corroborated from the linked own-brand documentation; Eaton does not name competitor manufacturers in this table. Confirm exact current and AC/DC voltage ratings, interrupt rating, time-current curve, let-through energy/I²t, coordination, utilization/fuse class, dimensions, mounting, temperature and approvals using current datasheets. Historical selection guidance does not establish present availability, drop-in suitability or reverse substitution approval. Family/configuration reference; excluded from second-degree inference.
Find additional research candidates through a shared connecting part. Each result is labeled Second-degree candidate · Unverified and shows both recorded source relationships.
Two recorded crosses do not establish a verified equivalent. Compare current specifications, interfaces, ratings, cable requirements and the same PCB footprint or panel fit before substitution. Candidate counts are separate from direct-cross and part totals.
A4BY(amp) series comparison
These series references are starting points for comparing product families. Select and verify the complete ordering code.
A recorded cross reference does not establish a drop-in replacement. Compare current datasheets, package or mounting dimensions, pinout, electrical ratings and operating conditions for your application. Similar parts can differ in critical specifications.
Counts describe recorded relationships, not stock, sales, testing or independent qualification. Manufacturer-and-part identities remain separate. Indexing dates do not establish current specifications or availability.
Check current manufacturer documents and electrical, mechanical, environmental and application requirements before selecting a replacement.