SPP-6F400 Equivalent & Substitute Parts

Part Overview

The SPP-6F400 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 400A at 700V operation. This component is classified as obsolete and requires a holder for installation. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for system maintenance, repair, and continued operational support where original inventory is depleted.

Substiute Parts

SPP-6F400

Eaton - Bussmann Electrical DivisionIn Stock: 1042SPP-6F400 Datasheet

Current PartRFQ

170M5708

Eaton - Bussmann Electrical DivisionIn Stock: 988170M5708 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 170M5708 shares the primary electrical rating of 400A current capacity with the SPP-6F400. Both components are manufactured by Eaton - Bussmann Electrical Division and carry identical HTSUS and ECCN classifications (8536.10.0040 and EAR99 respectively), confirming regulatory alignment.

The substitution is based on the following matching parameters:

• Current Rating: 400A (both parts)
• Manufacturer: Eaton - Bussmann Electrical Division (both parts)
• Regulatory Classification: HTSUS 8536.10.0040, ECCN EAR99 (both parts)
• Compliance Status: REACH Unaffected (SPP-6F400); RoHS Compliant (170M5708)

The 170M5708 operates at 70 VAC, which differs from the SPP-6F400 voltage specification of 700V. This voltage difference represents a distinct application boundary and must be evaluated against system requirements before substitution.

Parameter Comparison

Engineering Selection Recommendations

The 170M5708 is the identified substitute for the obsolete SPP-6F400 based on current rating alignment and manufacturer consistency. The 170M5708 carries active product status with RoHS compliance, providing supply continuity for 400A fuse applications.

Critical consideration: The voltage rating difference (700V vs. 70 VAC) must be verified against the actual system voltage requirement. The 170M5708 is specified for 70 VAC operation and must only be selected if the application operates within this voltage range.

Both parts share identical regulatory classifications (HTSUS 8536.10.0040, ECCN EAR99), confirming trade compliance alignment. The 170M5708 provides documented breaking capacity (200kA) and melting I²t characteristics (11000.0), supporting detailed circuit protection analysis.

Frequently Asked Questions (FAQ)

Q: Can the 170M5708 directly replace the SPP-6F400 in all applications?

A: Direct replacement is limited to applications operating at 70 VAC. The SPP-6F400 is rated for 700V operation. Voltage compatibility must be confirmed before substitution.

Q: What is the primary difference between these fuse types?

A: The SPP-6F400 uses a blade-type fuse requiring a holder for installation. The 170M5708 is a square-type fuse with bolt mount configuration. Installation hardware and mounting infrastructure differ between these designs.

Q: Why is the SPP-6F400 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M5708, maintained in active status by the same manufacturer, represents the current product line for 400A fuse applications.

Q: Are there compliance differences between these parts?

A: Both parts share identical HTSUS and ECCN classifications. The 170M5708 carries RoHS compliance certification, while the SPP-6F400 is REACH Unaffected. Both are suitable for regulated supply chains.

Q: What is the inventory status for these parts?

A: SPP-6F400 inventory is 1009 pieces (new original, in stock). 170M5708 inventory is 946 pieces (new original, in stock, bulk packaging).