SPP-6B350 Equivalent & Substitute Parts

Part Overview

The SPP-6B350 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-6B350

Eaton - Bussmann Electrical DivisionIn Stock: 1152SPP-6B350 Datasheet

Current PartRFQ

170M4611

Eaton - Bussmann Electrical DivisionIn Stock: 1246170M4611 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 170M4611 is identified as a substitute for the SPP-6B350 based on the following critical parameters:

• Current Rating: Both parts are rated for 350A
• Voltage Rating: Both parts operate at 700V AC
• Manufacturer: Both are manufactured by Eaton - Bussmann Electrical Division
• ECCN Classification: Both share the same ECCN code (EAR99)
• HTSUS Code: Both share the same HTSUS classification (8536.10.0040)

The 170M4611 differs in mounting configuration (bolt mount versus holder requirement) and fuse type classification (square versus blade), but maintains electrical equivalence in current and voltage ratings, making it suitable for applications requiring the same electrical protection characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 170M4611 is an active product substitute for the obsolete SPP-6B350, offering continued availability and support. Both components share identical electrical ratings (350A, 700V) and regulatory classifications (ECCN EAR99, HTSUS 8536.10.0040). The 170M4611 carries active product status and RoHS compliance certification, providing advantages for new installations and long-term supply chain continuity. The primary consideration for substitution is the mechanical interface: the SPP-6B350 requires a dedicated holder, while the 170M4611 uses bolt mount configuration. System integration must accommodate this mounting difference.

Frequently Asked Questions (FAQ)

Q: Can the 170M4611 directly replace the SPP-6B350 in existing installations?

A: Electrical substitution is valid based on matching current (350A) and voltage (700V) ratings. However, mechanical compatibility depends on the mounting infrastructure. The SPP-6B350 requires a holder assembly, while the 170M4611 uses bolt mount. Existing holder-based installations require mechanical adaptation or replacement with bolt mount infrastructure.

Q: What are the key electrical parameters that define substitution eligibility?

A: Current rating (350A), voltage rating (700V), and manufacturer (Eaton - Bussmann Electrical Division) are the primary electrical parameters. Both parts share identical ECCN and HTSUS classifications, confirming regulatory equivalence.

Q: Why is the SPP-6B350 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M4611 represents the active product line continuation from Eaton - Bussmann Electrical Division for this electrical specification class.

Q: Are there compliance differences between these parts?

A: The 170M4611 carries RoHS compliance certification, while the SPP-6B350 specification does not include this designation. Both parts share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications.

Q: What is the significance of the 200kA breaking capacity specification on the 170M4611?

A: Breaking capacity defines the maximum fault current the fuse can safely interrupt at rated voltage. This specification is provided for the 170M4611 but not documented for the obsolete SPP-6B350. This parameter should be verified against system requirements during substitution evaluation.