SPP-7B1250 Equivalent & Substitute Parts

Part Overview

The SPP-7B1250 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 1.25kA at 700V. This component is classified as obsolete and requires a holder for installation. Due to its obsolete status, identifying equivalent substitute parts is essential for system maintenance, repair, and continued operation where original inventory is depleted.

Substiute Parts

SPP-7B1250

Eaton - Bussmann Electrical DivisionIn Stock: 795SPP-7B1250 Datasheet

Current PartRFQ

170M6616

Eaton - Bussmann Electrical DivisionIn Stock: 1082170M6616 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPP-7B1250 is determined by the following critical parameters:

• Current Rating: 1.25kA (must match exactly)
• Voltage Rating: 700V AC (must match exactly)
• Manufacturer: Eaton - Bussmann Electrical Division (same manufacturer ensures design compatibility)
• Mounting Configuration: The original part requires a holder; substitute parts must be compatible with existing holder infrastructure or provide equivalent mounting solutions

The substitute part 170M6616 shares the same current and voltage ratings with the SPP-7B1250 and is manufactured by the same supplier. However, the mounting type differs: 170M6616 uses bolt mount configuration rather than holder-based installation. This difference requires verification of mechanical compatibility with the existing installation environment.

Parameter Comparison

Engineering Selection Recommendations

The 170M6616 is the designated substitute for the obsolete SPP-7B1250 based on electrical parameter equivalence: both components share identical current (1.25kA) and voltage (700V) ratings from the same manufacturer.

The 170M6616 holds active product status, ensuring ongoing availability and support. It carries multiple international certifications (CE, CSA, UR) and is RoHS compliant, meeting modern regulatory requirements. The specified breaking capacity of 200kA at rated voltage provides documented fault protection performance.

The primary consideration for substitution is the mechanical mounting difference: the SPP-7B1250 requires a holder-based installation, while the 170M6616 uses bolt mount configuration. Installation feasibility depends on the existing electrical enclosure design and available mounting infrastructure. Physical dimensions of the 170M6616 (2.008" L x 2.992" W x 3.622" H) must be evaluated against available space in the installation location.

Frequently Asked Questions (FAQ)

Q: Can the 170M6616 directly replace the SPP-7B1250 without modification?

A: Both components have identical electrical ratings (1.25kA, 700V). However, the mounting type differs: SPP-7B1250 requires a holder, while 170M6616 uses bolt mount. Direct replacement requires compatible mounting infrastructure in the existing installation.

Q: What are the critical parameters for fuse substitution?

A: Current rating and voltage rating must match exactly. For the SPP-7B1250, any substitute must be rated for 1.25kA at 700V. Mounting type and physical dimensions must also be compatible with the installation environment.

Q: Why is the SPP-7B1250 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 170M6616 is the active equivalent, ensuring continued availability for applications requiring 1.25kA, 700V fuse protection.

Q: What certifications does the 170M6616 carry?

A: The 170M6616 holds CE, CSA, and UR approvals and is RoHS compliant, meeting international electrical safety and environmental standards.

Q: How do the physical dimensions affect substitution?

A: The 170M6616 measures 2.008" L x 2.992" W x 3.622" H. These dimensions must fit within the available space of the electrical enclosure and be compatible with the bolt mount configuration of the installation.