SPP-4B275 Equivalent & Substitute Parts

Part Overview

The SPP-4B275 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 275A at 700V with blade mounting. This component is classified as obsolete, requiring identification of functionally equivalent alternatives for continued system support and procurement planning. Substitute parts must maintain electrical compatibility within the specified voltage and current parameters while accommodating available mounting configurations.

Substiute Parts

SPP-4B275

Eaton - Bussmann Electrical DivisionIn Stock: 1103SPP-4B275 Datasheet

Current PartRFQ

170M3617

Eaton - Bussmann Electrical DivisionIn Stock: 1066170M3617 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 170M3617 is identified based on the following electrical and mechanical compatibility criteria:

• Voltage Rating: Both parts operate at 700V AC, ensuring electrical compatibility within the same circuit protection scheme
• Manufacturer: Both parts are manufactured by Eaton - Bussmann Electrical Division, maintaining design and quality consistency
• Breaking Capacity: The substitute provides 200kA breaking capacity at rated voltage, suitable for industrial electrical applications
• Compliance: Both parts share identical ECCN (EAR99) and HTSUS classifications, ensuring regulatory alignment
• Mounting Configuration: The substitute utilizes bolt mount with rectangular blade package, providing mechanical compatibility within standard fuse holder assemblies

The primary difference is the current rating adjustment from 275A to 315A, which represents an increase in protective capacity. This substitution is valid where circuit protection requirements permit the higher current rating.

Parameter Comparison

Engineering Selection Recommendations

The 170M3617 serves as an active substitute for the obsolete SPP-4B275. Selection is based on:

• Product Status Alignment: The substitute is active and currently in production, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts share identical export control classifications (EAR99, HTSUS 8536.10.0040), maintaining compliance requirements
• Certification Coverage: The substitute carries CE, CSA, and UR approvals, providing broader regulatory recognition for industrial applications
• Environmental Compliance: The substitute is RoHS compliant, meeting current environmental standards for electrical components

Current rating adjustment from 275A to 315A must be evaluated within the specific circuit protection scheme to ensure the higher rating does not compromise system protection objectives.

Frequently Asked Questions (FAQ)

Q: Can the 170M3617 directly replace the SPP-4B275 in existing installations?

A: Direct replacement requires verification that the 315A current rating is appropriate for the protected circuit. The substitute maintains 700V voltage compatibility and uses compatible blade mounting. Mechanical fit within existing fuse holders must be confirmed based on the rectangular blade package dimensions (50.00mm L x 45.00mm W x 59.00mm H).

Q: What is the significance of the current rating difference between 275A and 315A?

A: The substitute provides a higher current rating, which increases the threshold at which the fuse will operate. This is acceptable only in applications where the circuit design permits the higher protective threshold. Circuit protection requirements must be re-evaluated for the specific application.

Q: Are there compliance differences between the two parts?

A: Both parts share identical ECCN and HTSUS classifications. The substitute carries additional certifications (CE, CSA, UR) and is RoHS compliant, representing enhanced regulatory coverage compared to the obsolete part.

Q: What mounting considerations apply to the 170M3617?

A: The substitute uses bolt mount configuration with rectangular blade package. Compatibility with existing fuse holder assemblies must be confirmed based on mechanical dimensions and mounting interface specifications.

Q: Why is the SPP-4B275 classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 170M3617 represents the current active alternative from the same manufacturer for equivalent circuit protection applications at 700V.