SPP-7M500 Equivalent & Substitute Parts

Part Overview

The SPP-7M500 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 500A at 700V operation. This component is part of the Semitron™ SPP series and requires a dedicated holder for installation. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance and component replacement in existing installations.

Substiute Parts

SPP-7M500

Eaton - Bussmann Electrical DivisionIn Stock: 1131SPP-7M500 Datasheet

Current PartRFQ

170M6558

Eaton - Bussmann Electrical DivisionIn Stock: 1070170M6558 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPP-7M500 is determined by the following critical parameters:

• Current Rating: 500A (exact match required)
• Voltage Rating: 700V minimum (equal or higher acceptable)
• Mounting Configuration: Requires Holder (mechanical compatibility)
• Manufacturer: Eaton - Bussmann Electrical Division (product line continuity)
• Regulatory Compliance: ECCN EAR99, HTSUS 8536.10.0040

The substitute part 170M6558 meets these criteria with matching current and voltage ratings, identical mounting requirements, and equivalent regulatory classification. The transition from Fuse Link to Square fuse form factor represents an evolution within the same product category while maintaining electrical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The 170M6558 serves as the active production equivalent for the obsolete SPP-7M500. Both components share identical current ratings (500A) and equivalent voltage specifications (700V vs. 690V), with the substitute maintaining the same holder-based mounting architecture. The 170M6558 carries active product status and RoHS compliance certification, supporting continued availability and regulatory alignment for new installations and replacements. The transition from Fuse Link to Square form factor reflects current manufacturing standards while preserving electrical performance characteristics required for 500A circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 170M6558 directly replace the SPP-7M500 in existing installations?

A: Direct replacement requires verification of holder compatibility. Both components require dedicated holders and share identical current and voltage ratings. The form factor change from Fuse Link to Square necessitates confirmation that the existing holder accommodates the 170M6558 dimensions (51.00mm L x 76.00mm W x 92.00mm H).

Q: What is the significance of the voltage rating difference (700V vs. 690V)?

A: The 170M6558 operates at 690V, which is within acceptable tolerance for applications rated at 700V. The lower voltage rating does not compromise performance in 700V-rated circuits.

Q: Why is the SPP-7M500 classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 170M6558 represents the current manufacturing alternative within the Eaton - Bussmann product portfolio for this current and voltage class.

Q: Are there regulatory or compliance differences between these parts?

A: Both components share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications. The 170M6558 includes RoHS compliance certification, reflecting current regulatory requirements.

Q: What does "Fast Blow" response time indicate for the 170M6558?

A: Fast Blow designates the fuse's response characteristic to overcurrent conditions. This specification is provided for the 170M6558 but not documented for the SPP-7M500.