SPP-4B125 Equivalent & Substitute Parts

Part Overview

The SPP-4B125 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 125A at 700V with blade mounting. This component is classified as obsolete, requiring identification of active equivalent parts for continued system support and procurement.

The obsolete status necessitates sourcing alternative components that maintain electrical and mechanical compatibility with existing installations and design requirements.

Substiute Parts

SPP-4B125

Eaton - Bussmann Electrical DivisionIn Stock: 831SPP-4B125 Datasheet

Current PartRFQ

170M3613

Eaton - Bussmann Electrical DivisionIn Stock: 813170M3613 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 170M3613 qualifies as a functional equivalent based on the following critical parameters:

• Current Rating: Both parts rated at 125A
• Voltage Rating: Both parts rated at 700V AC
• Manufacturer: Same manufacturer (Eaton - Bussmann Electrical Division) ensures design compatibility
• Compliance: Both parts share ECCN EAR99 classification and HTSUS code 8536.10.0040
• Product Status: 170M3613 is active, providing current availability

The primary difference is mounting configuration: SPP-4B125 uses blade mounting requiring a separate holder, while 170M3613 uses bolt mount with rectangular/blade package configuration. This distinction requires mechanical integration assessment during substitution.

Parameter Comparison

Engineering Selection Recommendations

The 170M3613 is the designated substitute for SPP-4B125 based on electrical parameter alignment and active product status. Both components share identical current and voltage ratings, manufacturer origin, and regulatory classification.

The 170M3613 provides additional documented specifications including 200kA breaking capacity and melting I²t value of 550, supporting enhanced system design verification. Active product status ensures procurement availability and supply chain continuity.

Mechanical integration requires assessment of mounting configuration differences. The transition from blade mounting (requiring separate holder) to bolt mount configuration necessitates mechanical redesign or adapter implementation within the installation.

Frequently Asked Questions (FAQ)

Q: Can 170M3613 directly replace SPP-4B125 without modification?

A: Electrical parameters are compatible (125A, 700V). Mechanical mounting differs: SPP-4B125 requires a separate holder for blade mounting, while 170M3613 uses bolt mount. Direct substitution requires mechanical integration assessment and potential mounting redesign.

Q: What are the critical parameters for substitution eligibility?

A: Current rating (125A), voltage rating (700V), and manufacturer (Eaton - Bussmann Electrical Division) are the primary electrical criteria. Mounting type and package configuration determine mechanical compatibility.

Q: Why is SPP-4B125 obsolete?

A: Product status is obsolete as provided in manufacturer data. The 170M3613 represents the active equivalent for continued procurement and system support.

Q: Are there compliance differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications. The 170M3613 includes RoHS Compliant status, while SPP-4B125 compliance documentation does not specify RoHS status.

Q: What is the inventory status for these parts?

A: SPP-4B125 has 744 pieces in stock (obsolete status). 170M3613 has 790 pieces in stock (active status), providing reliable procurement availability.