SPP-7B800 Equivalent & Substitute Parts

Part Overview

The SPP-7B800 is an 800A 700V fuse link manufactured by Eaton - Bussmann Electrical Division, part of the Semitron™ SPP series. This component is classified as obsolete, requiring identification of functionally equivalent alternatives for ongoing system maintenance and component replacement. The fuse link design necessitates use with a compatible holder assembly. Substitute parts must maintain electrical performance at the specified current and voltage ratings while accommodating available mounting configurations.

Substiute Parts

SPP-7B800

Eaton - Bussmann Electrical DivisionIn Stock: 1059SPP-7B800 Datasheet

Current PartRFQ

170M6612

Eaton - Bussmann Electrical DivisionIn Stock: 1167170M6612 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 170M6612 qualifies as a functional substitute based on the following critical parameters:

• Current Rating Match: Both components are rated for 800A continuous current capacity
• Voltage Rating Match: Both components operate at 700V AC, meeting the electrical system requirements
• Manufacturer Continuity: Both are manufactured by Eaton - Bussmann Electrical Division, ensuring design compatibility and quality standards
• Regulatory Compliance: Both components share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications
• Mounting Compatibility: The 170M6612 uses bolt mount configuration, which represents a standard industrial mounting method compatible with modern electrical enclosures

The primary difference lies in form factor: the SPP-7B800 is a blade-type fuse link requiring a dedicated holder, while the 170M6612 is a rectangular bolt-mount fuse. This distinction affects installation methodology but does not impact electrical performance at the specified ratings.

Parameter Comparison

Engineering Selection Recommendations

The 170M6612 is the designated substitute for SPP-7B800 applications. Selection is based on:

• Electrical Equivalence: Identical current and voltage ratings ensure direct functional replacement in 800A 700V circuits
• Active Product Status: The 170M6612 maintains active manufacturing status, providing supply chain continuity and long-term availability
• Regulatory Alignment: Both components share identical trade classification codes, simplifying procurement and compliance documentation
• Enhanced Specifications: The 170M6612 provides documented breaking capacity (200kA) and melting I²t (69500), offering additional performance transparency for system design verification

Installation requires adaptation from blade-type holder mounting to bolt-mount configuration. This change is standard in industrial electrical practice and does not compromise circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can the 170M6612 directly replace the SPP-7B800 in existing installations?

A: Electrical replacement is direct—both components provide identical 800A 700V protection. Physical installation requires mounting hardware compatible with bolt-mount configuration rather than blade-type holder assembly. Enclosure modification may be necessary depending on existing infrastructure.

Q: What is the significance of the 200kA breaking capacity specification on the 170M6612?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt without component failure or hazardous conditions. The 200kA rating on the 170M6612 provides documented performance data for system fault analysis and compliance verification.

Q: Are there compatibility concerns between the obsolete SPP-7B800 and active 170M6612?

A: No compatibility concerns exist at the electrical level. Both components are manufactured by the same division and share identical regulatory classifications. The transition from obsolete to active product status reflects manufacturing continuity rather than design change.

Q: What does the melting I²t value indicate?

A: Melting I²t (69500) quantifies the thermal energy required to melt the fuse element. This parameter is used in coordination studies to ensure proper protection sequencing in multi-stage electrical systems.

Q: Is RoHS compliance required for this application?

A: The 170M6612 is RoHS compliant. If RoHS compliance is a system requirement, the 170M6612 meets this standard. The SPP-7B800 RoHS status is not specified in available documentation.