Mersen 12,5URD71D11A0400 has 5 recorded cross-reference matches across 1 manufacturer. Research equivalent, alternate or similar parts using the listed candidates, and check their source notes before selecting a replacement.
Eaton Bussmann 170M4143 versus Mersen 12,5URD71D11A0400:
Mersen manufacturer-published selection comparison, source PDF page 37. The exact original 170M4143 also appears in Eaton Bussmann IEC high-speed fuse catalog on PDF page(s) 418. Mersen describes this guide as selection guidance for similar products and warns that size and performance may differ. This is a documented comparison requiring application review, not an independently verified drop-in replacement. The guide does not give same-row current, voltage, interrupting capacity, time-current curves or dimensional comparison. Verify exact ampere rating, AC/DC voltage, breaking capacity, utilization class, time-current/I²t and coordination, blade/bolt dimensions and mounting centers, indicator arrangement, thermal behavior and approvals against both current datasheets before substitution. Missing fit/rating evidence remains unresolved; panel or PCB modifications are not accepted as compatible mounting. Original source orientation is Eaton Bussmann to Mersen; reverse lookup does not establish reverse substitution approval. Historical listings do not establish current availability. No variants or amperages were generated. Excluded from second-degree inference.
Eaton Bussmann 170M4193 versus Mersen 12,5URD71D11A0400:
Mersen manufacturer-published selection comparison, source PDF page 37. The exact original 170M4193 also appears in Eaton Bussmann IEC high-speed fuse catalog on PDF page(s) 418. Mersen describes this guide as selection guidance for similar products and warns that size and performance may differ. This is a documented comparison requiring application review, not an independently verified drop-in replacement. The guide does not give same-row current, voltage, interrupting capacity, time-current curves or dimensional comparison. Verify exact ampere rating, AC/DC voltage, breaking capacity, utilization class, time-current/I²t and coordination, blade/bolt dimensions and mounting centers, indicator arrangement, thermal behavior and approvals against both current datasheets before substitution. Missing fit/rating evidence remains unresolved; panel or PCB modifications are not accepted as compatible mounting. Original source orientation is Eaton Bussmann to Mersen; reverse lookup does not establish reverse substitution approval. Historical listings do not establish current availability. No variants or amperages were generated. Excluded from second-degree inference.
Eaton Bussmann 170M4243 versus Mersen 12,5URD71D11A0400:
Mersen manufacturer-published selection comparison, source PDF page 38. The exact original 170M4243 also appears in Eaton Bussmann IEC high-speed fuse catalog on PDF page(s) 418. Mersen describes this guide as selection guidance for similar products and warns that size and performance may differ. This is a documented comparison requiring application review, not an independently verified drop-in replacement. The guide does not give same-row current, voltage, interrupting capacity, time-current curves or dimensional comparison. Verify exact ampere rating, AC/DC voltage, breaking capacity, utilization class, time-current/I²t and coordination, blade/bolt dimensions and mounting centers, indicator arrangement, thermal behavior and approvals against both current datasheets before substitution. Missing fit/rating evidence remains unresolved; panel or PCB modifications are not accepted as compatible mounting. Original source orientation is Eaton Bussmann to Mersen; reverse lookup does not establish reverse substitution approval. Historical listings do not establish current availability. No variants or amperages were generated. Excluded from second-degree inference.
Eaton Bussmann 170M4970 versus Mersen 12,5URD71D11A0400:
Mersen manufacturer-published selection comparison, source PDF page 40. The exact original 170M4970 also appears in Eaton Bussmann IEC high-speed fuse catalog on PDF page(s) 113, 419. Mersen describes this guide as selection guidance for similar products and warns that size and performance may differ. This is a documented comparison requiring application review, not an independently verified drop-in replacement. The guide does not give same-row current, voltage, interrupting capacity, time-current curves or dimensional comparison. Verify exact ampere rating, AC/DC voltage, breaking capacity, utilization class, time-current/I²t and coordination, blade/bolt dimensions and mounting centers, indicator arrangement, thermal behavior and approvals against both current datasheets before substitution. Missing fit/rating evidence remains unresolved; panel or PCB modifications are not accepted as compatible mounting. Original source orientation is Eaton Bussmann to Mersen; reverse lookup does not establish reverse substitution approval. Historical listings do not establish current availability. No variants or amperages were generated. Excluded from second-degree inference.
Eaton Bussmann 170M4985 versus Mersen 12,5URD71D11A0400:
Mersen manufacturer-published selection comparison, source PDF page 40. The exact original 170M4985 also appears in Eaton Bussmann IEC high-speed fuse catalog on PDF page(s) 113, 419. Mersen describes this guide as selection guidance for similar products and warns that size and performance may differ. This is a documented comparison requiring application review, not an independently verified drop-in replacement. The guide does not give same-row current, voltage, interrupting capacity, time-current curves or dimensional comparison. Verify exact ampere rating, AC/DC voltage, breaking capacity, utilization class, time-current/I²t and coordination, blade/bolt dimensions and mounting centers, indicator arrangement, thermal behavior and approvals against both current datasheets before substitution. Missing fit/rating evidence remains unresolved; panel or PCB modifications are not accepted as compatible mounting. Original source orientation is Eaton Bussmann to Mersen; reverse lookup does not establish reverse substitution approval. Historical listings do not establish current availability. No variants or amperages were generated. 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.
12,5URD71D11A0400 replacement and similar-part research
Looking for an equivalent or alternate to Mersen 12,5URD71D11A0400? The 5 recorded candidates above link to individual part pages and the evidence behind each relationship.
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.