SPP-6K550 Equivalent & Substitute Parts

Part Overview

The SPP-6K550 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 550A 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 essential for system maintenance, repair, and continued operational support where original inventory is depleted.

Substiute Parts

SPP-6K550

Eaton - Bussmann Electrical DivisionIn Stock: 1123SPP-6K550 Datasheet

Current PartRFQ

170M5511

Eaton - Bussmann Electrical DivisionIn Stock: 1143170M5511 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 170M5511 qualifies as a functional substitute for the SPP-6K550 based on the following critical parameters:

• Current Rating: Both parts are rated for 550A
• Voltage Rating: Both parts are rated for 700V AC operation
• Mounting Type: Both require a holder for installation
• Manufacturer: Both are manufactured by Eaton - Bussmann Electrical Division
• Compliance: Both carry REACH Unaffected status and EAR99 ECCN classification

The primary difference lies in form factor: the SPP-6K550 is a fuse link, while the 170M5511 is a square/rectangular blade fuse. This distinction affects physical dimensions and holder compatibility but does not alter the electrical substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

The 170M5511 is an active product with current manufacturing support, making it the primary substitute for the obsolete SPP-6K550. Both parts share identical electrical ratings (550A, 700V) and are manufactured by the same supplier, ensuring consistency in performance and compliance.

The 170M5511 carries CSA and UR approvals and is RoHS Compliant, providing enhanced regulatory alignment compared to the SPP-6K550. The breaking capacity of 200kA at rated voltage and melting I²t value of 28000.0 are specified for the 170M5511, supporting its use in high-fault-current applications.

Physical form factor differences (link versus square blade) require verification of holder compatibility before implementation. The 170M5511 dimensions are 1.969" L x 2.402" W x 3.031" H (50.00mm x 61.00mm x 77.00mm).

Frequently Asked Questions (FAQ)

Q: Can the 170M5511 directly replace the SPP-6K550 in existing installations?

A: Electrical compatibility is confirmed based on identical current and voltage ratings. However, physical form factor differences (fuse link versus square blade) require verification that the existing holder accommodates the 170M5511 dimensions before installation.

Q: What are the key electrical parameters that define substitution eligibility?

A: Current rating (550A), voltage rating (700V), and mounting requirement (holder-based installation) are the primary parameters. Both parts meet these criteria identically.

Q: Is the 170M5511 actively manufactured?

A: Yes, the 170M5511 is classified as Active, ensuring ongoing availability and manufacturing support, unlike the obsolete SPP-6K550.

Q: What compliance certifications apply to the 170M5511?

A: The 170M5511 holds CSA and UR approvals and is RoHS Compliant. It carries EAR99 ECCN classification and HTSUS code 8536.10.0040, matching the SPP-6K550 regulatory framework.

Q: Are there dimensional considerations for substitution?

A: Yes. The 170M5511 measures 1.969" L x 2.402" W x 3.031" H. Confirm that the existing fuse holder accommodates these dimensions before proceeding with substitution.