SPP-4M125 Equivalent & Substitute Parts

Part Overview

The SPP-4M125 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 125A 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 necessary to maintain system functionality and ensure continued availability for replacement applications.

Substiute Parts

SPP-4M125

Eaton - Bussmann Electrical DivisionIn Stock: 1182SPP-4M125 Datasheet

Current PartRFQ

170M3563

Eaton - Bussmann Electrical DivisionIn Stock: 912170M3563 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SPP-4M125 is determined by the following critical electrical and mechanical parameters:

• Current Rating: 125A
• Voltage Rating: 700V AC
• Mounting Configuration: Requires Holder
• Regulatory Compliance: REACH Unaffected, EAR99 classification

The substitute part 170M3563 meets these core requirements. Both components share identical current and voltage ratings, operate within the same regulatory framework, and require holder-based installation. The substitute maintains compatibility with systems designed for the original SPP-4M125 specification.

Parameter Comparison

Engineering Selection Recommendations

The 170M3563 is the active equivalent for the obsolete SPP-4M125. Both components are manufactured by Eaton - Bussmann Electrical Division and share identical electrical ratings of 125A at 700V AC. The substitute part carries active product status, ensuring ongoing availability and supply chain continuity.

The 170M3563 holds CSA and UR approvals and specifies a breaking capacity of 200kA at rated voltage. Both parts maintain EAR99 export classification and fall under the same HTSUS commodity code, supporting regulatory and compliance requirements.

Physical form factor differences exist between the stud-type SPP-4M125 and the square-type 170M3563; however, both require holder-based installation and operate within identical electrical parameters. Mechanical compatibility with existing holder assemblies must be verified during integration.

Frequently Asked Questions (FAQ)

Q: Can the 170M3563 directly replace the SPP-4M125?

A: Both components share identical current (125A) and voltage (700V AC) ratings and require holder-based mounting. Physical form factor differences (stud versus square type) necessitate verification of mechanical compatibility with the existing holder assembly before substitution.

Q: Why is the SPP-4M125 listed as obsolete?

A: The SPP-4M125 has reached end-of-life status. The 170M3563 is the active equivalent offering the same electrical performance with current manufacturing support.

Q: Are there regulatory differences between these parts?

A: Both components share EAR99 export classification and the same HTSUS code. The 170M3563 carries CSA and UR approvals. Regulatory compliance requirements for your specific application should be evaluated.

Q: What is the breaking capacity difference?

A: The 170M3563 specifies 200kA breaking capacity at rated voltage. The SPP-4M125 breaking capacity is not provided in available documentation. System fault current requirements should be evaluated against the 170M3563 specification.

Q: Are inventory levels a consideration?

A: The SPP-4M125 has 1123 pieces in stock (obsolete status), while the 170M3563 has 855 pieces available (active status). For long-term applications, the active part ensures sustained supply availability.