SPP-5K300 Equivalent & Substitute Parts

Part Overview

The SPP-5K300 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 300A at 700V, designed for use with a separate fuse holder. 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 700V system voltage class while accommodating the stud mounting interface requirement.

Substiute Parts

SPP-5K300

Eaton - Bussmann Electrical DivisionIn Stock: 1158SPP-5K300 Datasheet

Current PartRFQ

170M4510

Eaton - Bussmann Electrical DivisionIn Stock: 757170M4510 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-5K300 is based on the following critical parameters:

• Voltage Rating: Both main and substitute parts must operate at 700V AC to ensure system compatibility
• Mounting Interface: Both parts require a holder-based mounting configuration
• Manufacturer Consistency: Eaton - Bussmann Electrical Division maintains product line continuity
• Current Rating Tolerance: The substitute part (170M4510) operates at 315A, representing a 5% increase from the 300A rating, within acceptable tolerance for fuse element substitution in industrial electrical systems
• Regulatory Compliance: Both parts share identical ECCN and HTSUS classifications, confirming regulatory equivalence

Parameter Comparison

Engineering Selection Recommendations

The 170M4510 serves as the primary substitute for the obsolete SPP-5K300 based on the following factors:

• Active Product Status: The 170M4510 is currently in active production, ensuring long-term availability and supply chain continuity
• Voltage Compatibility: Both parts operate at 700V, maintaining electrical system requirements
• Holder-Based Interface: Both components require external holder mounting, preserving installation compatibility
• Regulatory Alignment: Identical ECCN and HTSUS codes confirm that substitution does not introduce compliance complications
• Enhanced Specifications: The 170M4510 provides documented breaking capacity (200kA) and third-party certifications (CSA, UR), offering improved traceability for industrial applications

The 5% increase in current rating (315A vs. 300A) is within standard tolerance ranges for fuse element substitution in electrical distribution systems.

Frequently Asked Questions (FAQ)

Q: Can the 170M4510 directly replace the SPP-5K300 in existing installations?

A: Yes, provided the fuse holder is compatible with the rectangular blade package configuration of the 170M4510. Both parts require external holders and operate at 700V, meeting the core electrical requirements.

Q: What is the significance of the current rating difference (300A vs. 315A)?

A: The 15A increase represents a 5% tolerance margin. In fuse element design, this variation falls within acceptable substitution parameters for industrial electrical systems. The substitute part provides equivalent or superior protection characteristics.

Q: Are there compliance or certification differences between the two parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications. The 170M4510 includes documented CSA and UR approvals, providing additional third-party validation for regulated applications.

Q: What is the physical size difference between these fuse types?

A: The SPP-5K300 uses a fuse link package, while the 170M4510 employs a rectangular blade configuration (50.00mm L x 53.00mm W x 69.00mm H). Holder compatibility must be verified before installation.

Q: Why is the SPP-5K300 listed as obsolete?

A: Obsolescence reflects discontinuation of this specific model line by the manufacturer. The 170M4510 represents the current-generation equivalent within the Eaton - Bussmann product portfolio.