SPP-5K350 Equivalent & Substitute Parts

Part Overview

The SPP-5K350 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 350A at 700V operation. This component is classified as obsolete and requires a holder for installation. Due to its obsolete status, identifying equivalent substitute parts is essential for system maintenance, repair, and continued operational support where original inventory is depleted or unavailable.

Substiute Parts

SPP-5K350

Eaton - Bussmann Electrical DivisionIn Stock: 782SPP-5K350 Datasheet

Current PartRFQ

170M4511

Eaton - Bussmann Electrical DivisionIn Stock: 999170M4511 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-5K350 is determined by the following critical electrical and mechanical parameters:

• Current Rating: 350A (exact match required)
• Voltage Rating: 700V AC (exact match required)
• Mounting Configuration: Requires Holder (mechanical compatibility)
• Manufacturer: Eaton - Bussmann Electrical Division (same manufacturer ensures design consistency)
• Compliance & Certifications: REACH Unaffected, ECCN EAR99 classification

The substitute part 170M4511 meets all these criteria, providing functional equivalence for applications requiring 350A at 700VAC protection with holder-based installation.

Parameter Comparison

Engineering Selection Recommendations

The 170M4511 is the qualified substitute for the obsolete SPP-5K350 based on the following factors:

• Electrical Equivalence: Both components share identical current (350A) and voltage (700V) ratings, ensuring direct functional replacement in existing circuits.
• Mechanical Compatibility: Both require holder-based installation, maintaining compatibility with existing mounting infrastructure.
• Active Product Status: The 170M4511 is currently active in production, ensuring long-term availability and supply chain reliability compared to the obsolete SPP-5K350.
• Regulatory Compliance: Both components carry identical ECCN (EAR99) and HTSUS classifications, confirming equivalent regulatory standing.
• Manufacturer Consistency: Both are manufactured by Eaton - Bussmann Electrical Division, ensuring design and performance consistency.

The primary difference is the fuse type designation (Link vs. Square), which reflects packaging geometry rather than electrical performance. The 170M4511 provides documented breaking capacity (200kA) and melting I²t (8500) specifications, offering enhanced technical transparency for system design verification.

Frequently Asked Questions (FAQ)

Q: Can the 170M4511 directly replace the SPP-5K350 in existing installations?

A: Yes. Both components are rated for 350A at 700V and require holder-based installation. The electrical and mechanical parameters are equivalent, enabling direct substitution in applications designed for the SPP-5K350.

Q: What is the difference between "Link" and "Square" fuse types?

A: These designations describe the physical form factor and packaging geometry. The SPP-5K350 uses a link configuration, while the 170M4511 uses a square/rectangular blade configuration. Both are holder-mounted fuses with identical electrical ratings and are mechanically compatible with appropriate holder designs.

Q: Why is the SPP-5K350 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M4511 is the active equivalent, ensuring continued availability for replacement and maintenance applications.

Q: Are there any compliance differences between these parts?

A: No. Both components share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications, confirming equivalent regulatory and trade compliance status.

Q: What is the breaking capacity of the SPP-5K350?

A: Breaking capacity is not specified in the available technical data for the SPP-5K350. The 170M4511 substitute specifies 200kA breaking capacity at rated voltage, providing documented performance data for system design purposes.