SPP-7H450 Equivalent & Substitute Parts

Part Overview

The SPP-7H450 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 450A at 700V operation. This component is classified as obsolete, requiring identification of suitable alternatives for continued system support. The part operates as a blade-mounted fuse link within the Semitron™ SPP series and necessitates a separate holder for installation. Due to its obsolete status, sourcing equivalent or substitute components is essential for maintenance and replacement applications in electrical systems.

Substiute Parts

SPP-7H450

Eaton - Bussmann Electrical DivisionIn Stock: 1133SPP-7H450 Datasheet

Current PartRFQ

170M6758

Eaton - Bussmann Electrical DivisionIn Stock: 1132170M6758 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-7H450 is determined by the following critical parameters:

• Current Rating: 450A (main part) vs. 500A (substitute)
• Voltage Rating: 700V (both parts)
• Mounting Configuration: Blade-mounted holder requirement vs. bolt mount capability
• Manufacturer Continuity: Both parts from Eaton - Bussmann Electrical Division
• Compliance & Certifications: REACH and ECCN alignment

The substitute part 170M6758 operates at a higher current rating (500A) while maintaining the same 700V voltage specification. This represents an uprated alternative suitable for applications where the original 450A rating is no longer available. The shift from blade-mounted to bolt-mount configuration requires mechanical integration assessment during implementation.

Parameter Comparison

Engineering Selection Recommendations

The 170M6758 serves as an active substitute for the obsolete SPP-7H450. Both components share identical voltage ratings (700V) and are manufactured by the same supplier, ensuring compatibility within the Eaton - Bussmann product ecosystem. The substitute operates at a higher current capacity (500A vs. 450A), positioning it as an uprated alternative suitable for applications requiring the original 450A specification.

Key considerations for selection:

• The 170M6758 maintains active product status, ensuring ongoing availability and supply chain continuity
• Both parts carry identical ECCN (EAR99) and HTSUS classifications, supporting regulatory alignment
• The substitute's bolt-mount configuration differs from the blade-link holder requirement of the original part, necessitating mechanical integration review
• The 170M6758 provides specified breaking capacity (200kA) and melting I²t (14000.0), offering enhanced electrical performance documentation

Frequently Asked Questions (FAQ)

Q: Can the 170M6758 directly replace the SPP-7H450 in existing installations?

A: Direct mechanical replacement requires assessment of the mounting interface. The SPP-7H450 uses a blade-link holder configuration, while the 170M6758 employs bolt-mount attachment. Electrical compatibility is established through matching 700V voltage ratings and manufacturer continuity.

Q: What is the significance of the current rating difference (450A vs. 500A)?

A: The 170M6758 operates at a higher current capacity. In applications designed for 450A operation, the 500A-rated substitute provides margin above the original specification. System design review is necessary to confirm this uprating is acceptable for the intended application.

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

A: Both components share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications. The SPP-7H450 carries REACH Unaffected status; the 170M6758 classification for REACH is not specified in available documentation.

Q: What does the Melting I²t value indicate?

A: The Melting I²t (14000.0) of the 170M6758 quantifies the thermal energy required to melt the fuse element. This parameter is not specified for the obsolete SPP-7H450, making direct thermal comparison unavailable.

Q: Why is the SPP-7H450 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M6758, classified as active, represents the current product line alternative from Eaton - Bussmann for this application category.