Equivalent & Substitute Parts Reference for SPP-4M250

Part Overview

Manufacturer Part Number SPP-4M250 by Eaton - Bussmann Electrical Division is a fuse link requiring a holder, rated for 250A, 700V. The device has reached obsolete status within the Semitron™ SPP series. Due to obsolescence, sourcing compatible substitute fuses is required to maintain equipment functionality and ensure ongoing support for legacy systems.

Substiute Parts

SPP-4M250

Eaton - Bussmann Electrical DivisionIn Stock: 908SPP-4M250 Datasheet

Current PartRFQ

170M3566

Eaton - Bussmann Electrical DivisionIn Stock: 726170M3566 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution grouping is determined strictly by matching key electrical and mechanical parameters:

• Current Rating (Amps): 250A
• Voltage Rating: 700V or 700VAC
• Mounting Type: Requires Holder
• Manufacturer: Eaton - Bussmann Electrical Division
• Packaging: Bulk
• Compliance: ECCN, HTSUS alignment

Compatibility is established only where parameters explicitly match. No additional characteristics are considered.

Parameter Comparison

Engineering Selection Recommendations

The SPP-4M250 is obsolete and no longer in active production. Substitute part 170M3566 is in active status, from the same manufacturer, and matches on current rating, voltage rating, mounting type, packaging, and compliance fields (ECCN EAR99 and HTSUS 8536.10.0040). Both are classified under Bulk packaging and require a holder. Selection can be made with attention to product status and matching electrical parameters according to the given documentation.

Frequently Asked Questions (FAQ)

Q: What determines compatibility for substituting SPP-4M250 with 170M3566?
A: Compatibility is determined by matching the electrical ratings (250A, 700V), manufacturer, mounting type (requires holder), packaging, and compliance fields.

Q: Is the package or case type a consideration in this substitution?
A: Only the mounting type ("Requires Holder") and packaging ("Bulk") parameters are considered, as provided. Case styles differ (Fuse Link vs. Rectangular, Blade), but substitution is based strictly on matching allowed parameters.

Q: Can substitutes outside the listed part (170M3566) be used?
A: Only substitutes matching the provided parameters may be selected. No additional parts are listed or included in this reference.

Q: Does product compliance or MOISTURE SENSITIVITY LEVEL (MSL) affect substitution?
A: Both SPP-4M250 ("1 (Unlimited)") and 170M3566 ("Not Applicable") are suitable. Compliance fields (ECCN EAR99, HTSUS 8536.10.0040) are equivalent.

Q: Why is substitution necessary?
A: SPP-4M250 is classified as obsolete; therefore, substituting with compatible active parts maintains system support.