3RA23278XE302BB4 vs 3RT20231BB40

Comparison matrix

Industrial parameter delta view (differing rows only). Toggle highlight to stress changed cells for cabinet retrofit reviews.

Highlight differences

Normalized specification differences for 3RA23278XE302BB4 and 3RT20231BB40
Parameter	3RA23278XE302BB4	3RT20231BB40
Must Operate Voltage	-	19.2 VDC
Package	Box	Bulk
Base Product Number	3RA23278XE	3RT2023
Contact Rating (current)	32 A	9 A
Series	SIRIUS	3RT2

Table lists differing catalog rows only; highlight calls attention to the delta cells.

Catalog selection insight

One-line delta from headline spec rows — screening language only, not a suitability or substitution decision.

3RA23278XE302BB4: package / footprint differs from 3RT20231BB40 (Box vs Bulk) — use for density or routing-constrained boards.

Technical screening notes (catalog snapshot)

Deterministic text from normalized spec keys — not live field-application-engineering advice or manufacturer sign-off.

Technical screening note for 3RA23278XE302BB4 vs 3RT20231BB40: this catalog snapshot lacks obvious isolation/EMC/protocol rows — expand the PDP specification table or open the PDF for creepage, surge, and bus timing before any design change.

Catalog screening tiers (heuristic)

Three non-authoritative screening tiers (mechanical token, functional checklist, planning notes) mirror the JSON-Ld ItemList on this page — not manufacturer substitution letters or field approvals.

Mechanical / packaging row (not interchange)
No substantive shared package token — treat as independent mechanical designs, not a hot swap, until your own checks pass.
Functional screening checklist
Run isolation, supply range, bus timing, and software/runtime checks against your deployed baseline. Matching tokens here do **not** prove interchange — only your qualification tests do.
Design-change planning notes
If you intend a product change, favor wider temperature, higher isolation withstand, or newer fieldbus only **after** manufacturer guidance, software licensing, and enclosure clearance are confirmed — not from this matrix alone.

Tool-style compare: isolation, supply, IP, rail, fieldbus, and EMC rows are surfaced first when present. Open each PDP for PDF revisions and RFQ.

Compatibility screening (catalog text)

Same deterministic tiers as the compare module above — for engineering checklists only, not approved alternates. Supply, protocol, and processor headline mismatches surface as warnings when present.

1. Mechanical / packaging row (not interchange)
No substantive shared package token — treat as independent mechanical designs, not a hot swap, until your own checks pass.
2. Functional screening checklist
Run isolation, supply range, bus timing, and software/runtime checks against your deployed baseline. Matching tokens here do **not** prove interchange — only your qualification tests do.
3. Design-change planning notes
If you intend a product change, favor wider temperature, higher isolation withstand, or newer fieldbus only **after** manufacturer guidance, software licensing, and enclosure clearance are confirmed — not from this matrix alone.

Technical compliance & certifications

Values below are extracted from normalized catalog specification keys and brand-level certification lists (where present). They mirror manufacturer datasheet legends when those strings were captured in the catalog row — not a certificate download. This page was machine-aligned on 2026-05-13 for technical selection support only; it is not the sole basis for installation or safety sign-off in your jurisdiction.