SPP-4M70 Equivalent & Substitute Parts

Part Overview

The SPP-4M70 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated at 70A 700V with stud mounting configuration. This component is classified as obsolete, requiring identification of functionally equivalent alternatives for continued system support and procurement planning. The obsolete status necessitates substitute part evaluation to maintain electrical system integrity and operational continuity.

Substiute Parts

SPP-4M70

Eaton - Bussmann Electrical DivisionIn Stock: 1105SPP-4M70 Datasheet

Current PartRFQ

170M3561

Eaton - Bussmann Electrical DivisionIn Stock: 1137170M3561 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-4M70 is based on the following critical parameters:

• Voltage Rating: Both parts must operate at 700V AC to ensure electrical system compatibility
• Mounting Configuration: Both parts require holder-based mounting systems
• Manufacturer Continuity: Eaton - Bussmann Electrical Division maintains product line compatibility
• Regulatory Compliance: REACH and ECCN classifications must align for procurement and export compliance
• Current Rating Tolerance: The substitute part (170M3561 at 80A) operates at a higher current rating within the same voltage class

The 170M3561 is identified as a functionally equivalent substitute based on shared voltage rating, holder-based mounting requirement, and manufacturer alignment.

Parameter Comparison

Engineering Selection Recommendations

The 170M3561 is an active product with current manufacturing support from Eaton - Bussmann Electrical Division, providing supply chain continuity for the obsolete SPP-4M70. Both components share identical voltage rating (700V) and holder-based mounting architecture, establishing electrical and mechanical compatibility within the same product family.

The 170M3561 carries CSA and UR approvals, providing third-party certification for industrial and electrical applications. The higher current rating (80A versus 70A) positions this substitute as suitable for equivalent or upgraded circuit protection scenarios. Both components maintain EAR99 export classification alignment.

Physical form factor differences exist between the stud-mounted SPP-4M70 and the rectangular blade-mounted 170M3561. Holder compatibility must be verified during integration planning to ensure mechanical fit within existing fuse holder assemblies.

Frequently Asked Questions (FAQ)

Q: Can the 170M3561 directly replace the SPP-4M70 in existing installations?

A: Both components operate at 700V and require holder-based mounting. However, the SPP-4M70 uses stud mounting while the 170M3561 uses rectangular blade mounting. Mechanical compatibility with the existing fuse holder assembly must be confirmed before substitution.

Q: What is the significance of the higher current rating on the 170M3561?

A: The 170M3561 is rated at 80A compared to the SPP-4M70 at 70A. Both operate at the same 700V voltage level. The higher current rating indicates the substitute can handle greater fault current capacity while maintaining the same voltage protection threshold.

Q: Are there compliance differences between these parts?

A: Both components carry EAR99 ECCN classification. The 170M3561 holds CSA and UR approvals, providing documented third-party certification. The SPP-4M70 approval agencies are not specified in available documentation.

Q: Why is the SPP-4M70 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M3561 remains in active production, ensuring long-term availability and supply chain stability for new procurement and system maintenance.

Q: What packaging options are available?

A: The SPP-4M70 is supplied in standard fuse link packaging. The 170M3561 is available in bulk packaging, supporting high-volume procurement requirements.