SPP-5E300 Equivalent & Substitute Parts

Part Overview

The SPP-5E300 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 300A at 700V operation. This component is classified as obsolete, requiring identification of functionally equivalent alternatives for continued system support and procurement planning. The part operates as a blade-mounted fuse element designed for high-current electrical protection applications. Locating suitable substitutes is essential for maintenance, repair, and new installations where this legacy component is specified.

Substiute Parts

SPP-5E300

Eaton - Bussmann Electrical DivisionIn Stock: 1174SPP-5E300 Datasheet

Current PartRFQ

170M4660

Eaton - Bussmann Electrical DivisionIn Stock: 743170M4660 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-5E300 is determined by alignment of the following critical electrical and mechanical parameters:

• Current Rating: 300A nominal capacity
• Voltage Rating: 700V AC operation
• Mounting Configuration: Blade or bolt-mount fuse assembly
• Manufacturer: Eaton - Bussmann Electrical Division (same product family)
• Regulatory Compliance: REACH and ECCN classification consistency

The identified substitute, 170M4660, operates at 315A and 700VAC with bolt-mount configuration. While the current rating differs by 15A (315A vs. 300A), this represents an acceptable tolerance within industrial fuse selection standards for equivalent protection duty. Both components share identical voltage rating, regulatory status, and manufacturer origin, establishing functional equivalence for system-level replacement.

Parameter Comparison

Engineering Selection Recommendations

The 170M4660 serves as the primary equivalent substitute for the obsolete SPP-5E300. Selection is justified on the following basis:

• Both components are manufactured by Eaton - Bussmann Electrical Division, ensuring design and quality consistency within the same product family
• Voltage rating alignment at 700V AC establishes electrical compatibility for the intended circuit duty
• Current rating differential (315A vs. 300A) falls within acceptable substitution tolerance for fuse element selection
• The 170M4660 maintains active product status, ensuring ongoing availability and supply chain continuity
• Regulatory classification (ECCN EAR99, HTSUS 8536.10.0040) is identical, supporting compliance requirements
• The substitute carries multiple approval certifications (CE, CSA, UR), providing enhanced regulatory coverage

Mounting configuration differs between blade-mount (SPP-5E300) and bolt-mount (170M4660) assemblies. System integration requires verification that the receiving circuit accommodates the bolt-mount interface and physical envelope (1.969" L x 2.087" W x 2.717" H).

Frequently Asked Questions (FAQ)

Q: Can the 170M4660 directly replace the SPP-5E300 without circuit modification?

A: Electrical compatibility is established through matching voltage rating (700V) and acceptable current rating tolerance (315A vs. 300A). Mechanical compatibility requires confirmation that the receiving circuit supports bolt-mount configuration and the specified physical dimensions.

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

A: The 15A differential represents a 5% increase in rated capacity. This falls within standard industrial fuse substitution practice and does not compromise protection duty when the substitute is applied to circuits originally specified for 300A operation.

Q: Why is the SPP-5E300 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M4660 is an active product offering equivalent electrical and mechanical function, supporting long-term system maintenance and procurement.

Q: Are there compliance differences between the two parts?

A: Both components share identical ECCN (EAR99) and HTSUS (8536.10.0040) classification. The 170M4660 carries additional approval certifications (CE, CSA, UR), providing broader regulatory recognition.

Q: What mounting considerations apply to the 170M4660?

A: The 170M4660 uses bolt-mount configuration with physical dimensions of 1.969" L x 2.087" W x 2.717" H (50.00mm x 53.00mm x 69.00mm). The original SPP-5E300 requires a separate holder assembly. Integration requires mechanical compatibility verification with the receiving circuit design.