SPP-4B300 Equivalent & Substitute Parts

Part Overview

The SPP-4B300 is a fuse link manufactured by Eaton - Bussmann Electrical Division, rated for 300A at 700V operation. This component is classified as obsolete, requiring identification of functionally equivalent alternatives for continued system support and procurement planning. The obsolete status necessitates substitute part evaluation to maintain electrical system integrity and operational continuity.

Substiute Parts

SPP-4B300

Eaton - Bussmann Electrical DivisionIn Stock: 1162SPP-4B300 Datasheet

Current PartRFQ

170M3617

Eaton - Bussmann Electrical DivisionIn Stock: 1066170M3617 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part 170M3617 is identified based on the following electrical and mechanical compatibility criteria:

• Voltage Rating Compatibility: Both parts operate at 700V AC, ensuring equivalent electrical stress ratings
• Current Rating Proximity: 170M3617 is rated at 315A, providing current protection in the same operational range as the 300A SPP-4B300
• Manufacturer Consistency: Both components are manufactured by Eaton - Bussmann Electrical Division, ensuring design and quality standards alignment
• Regulatory Compliance: Both parts share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications
• Active Product Status: 170M3617 maintains active product status, ensuring ongoing availability and support

Parameter Comparison

Engineering Selection Recommendations

The 170M3617 serves as an active substitute for the obsolete SPP-4B300 based on electrical parameter alignment and manufacturer continuity. Both components operate at 700V with current ratings within the same operational band (300A vs. 315A). The substitute part maintains identical regulatory classifications (ECCN and HTSUS) and carries active product status with documented inventory availability.

The primary distinction lies in mounting architecture: the SPP-4B300 requires a separate holder assembly, while the 170M3617 employs bolt mount configuration. This difference necessitates mechanical integration assessment within the target application. The 170M3617 provides additional documented specifications including breaking capacity (200kA) and melting I²t (7000), supporting enhanced design verification.

Frequently Asked Questions (FAQ)

Q: Can 170M3617 directly replace SPP-4B300 in existing installations?

A: Electrical compatibility is established through matching 700V ratings and comparable current ratings (315A vs. 300A). However, mounting type differs: SPP-4B300 requires a holder assembly while 170M3617 uses bolt mount. Mechanical integration must be evaluated for the specific application.

Q: What is the significance of the current rating difference (300A vs. 315A)?

A: The 170M3617 operates at 315A, providing 5% higher current capacity than the 300A SPP-4B300. Both ratings fall within the same operational classification for 700V systems. Application-specific current requirements determine suitability.

Q: Are there compliance differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications. The 170M3617 carries RoHS Compliant status and provides documented breaking capacity and melting I²t specifications, while the SPP-4B300 specifications are limited.

Q: What is the inventory status for these components?

A: SPP-4B300 maintains 1067 pieces in stock as obsolete inventory. 170M3617 maintains 995 pieces in active stock, ensuring procurement availability for ongoing applications.

Q: How do the package configurations differ?

A: SPP-4B300 is classified as a Fuse Link requiring external holder mounting. 170M3617 is a Square Bolt Mount fuse with rectangular blade package configuration (50.00mm L x 45.00mm W x 59.00mm H).