SPP-4M225 Equivalent & Substitute Parts

Part Overview

The SPP-4M225 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 225A at 700V, designed for stud mounting applications requiring a separate holder. This component is classified as obsolete, making identification of suitable alternatives essential for system maintenance and component replacement in existing installations.

The obsolete status necessitates sourcing equivalent or substitute components that maintain electrical and mechanical compatibility with the original circuit design while meeting current availability and compliance requirements.

Substiute Parts

SPP-4M225

Eaton - Bussmann Electrical DivisionIn Stock: 926SPP-4M225 Datasheet

Current PartRFQ

170M3566

Eaton - Bussmann Electrical DivisionIn Stock: 726170M3566 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-4M225 is based on the following critical parameters:

• Voltage Rating: Both parts must operate at 700V AC to ensure safe circuit protection
• Mounting Configuration: Both parts require a holder, maintaining mechanical compatibility with existing installations
• Manufacturer Continuity: Eaton - Bussmann Electrical Division maintains product lineage across obsolete and active components
• Regulatory Compliance: REACH and ECCN classifications must align to support continued use in regulated environments

The substitute part 170M3566 shares the same voltage rating (700VAC), mounting requirement (holder-based), and manufacturer source, establishing a valid substitution pathway despite differences in current rating and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The 170M3566 represents an active product alternative from the same manufacturer with matching voltage and mounting specifications. Key considerations for selection:

• Product Status: The 170M3566 is active and currently in production, ensuring long-term availability compared to the obsolete SPP-4M225
• Current Rating Differential: The substitute operates at 250A versus the original 225A, representing a 12.5% increase in current capacity
• Regulatory Alignment: Both components share EAR99 classification, maintaining export and compliance consistency
• Certifications: The 170M3566 carries CSA and UR approvals, providing third-party validation for industrial and electrical applications
• Mechanical Compatibility: Both components require holder mounting, supporting direct installation in existing fixtures

Selection of the 170M3566 is appropriate where the higher current rating and active product status align with system requirements and circuit design parameters.

Frequently Asked Questions (FAQ)

Q: Can the 170M3566 directly replace the SPP-4M225 in all applications?

A: Both components share 700V voltage rating and holder-based mounting, establishing mechanical and electrical compatibility. The 170M3566 operates at 250A versus the original 225A rating. Circuit design parameters must confirm that the higher current rating is acceptable for the intended application.

Q: What is the significance of the SPP-4M225 being obsolete?

A: Obsolete status indicates the component is no longer manufactured or supported by Eaton - Bussmann Electrical Division. The 170M3566 provides an active alternative from the same manufacturer, ensuring continued availability and technical support.

Q: Are there differences in physical dimensions between these components?

A: The SPP-4M225 is classified as a Fuse Link, while the 170M3566 is a rectangular blade fuse measuring 2.323" L x 1.772" W x 2.008" H. Physical form factor differences require confirmation that the substitute fits within the existing holder assembly.

Q: Do both components meet the same regulatory requirements?

A: Both components carry EAR99 ECCN classification. The 170M3566 includes CSA and UR approvals. The SPP-4M225 is REACH Unaffected. Regulatory requirements for your specific application should be confirmed with your compliance team.

Q: What is the melting I²t value for the SPP-4M225?

A: The melting I²t for the SPP-4M225 is not specified in the available technical data. The 170M3566 has a melting I²t of 4200. This parameter should be obtained from Eaton - Bussmann Electrical Division technical documentation if required for circuit analysis.