SPNH080.XXDLMS Equivalent & Substitute Parts

Part Overview

The SPNH080.XXDLMS is an 80A 1.5 kVDC rectangular bolt mount fuse from Littelfuse Inc.'s POWR-GARD® SPNH series, designed for photovoltaic applications. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain system functionality and ensure continued availability for replacement and new installations.

Substiute Parts

SPNH080.XXDLMS

Littelfuse Inc.In Stock: 889SPNH080.XXDLMS Datasheet

Current PartRFQ

PSX1XLUB0080X

Littelfuse Inc.In Stock: 879PSX1XLUB0080X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPNH080.XXDLMS is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Current Rating: 80A (exact match required)
• Voltage Rating: 1.5 kVDC (exact match required)
• Response Time: Fast Blow (exact match required)

Mechanical Compatibility Requirements:

• Mounting Type: Bolt Mount (exact match required)
• Package/Case: Rectangular, Blade configuration

Regulatory & Compliance Requirements:

• RoHS3 Compliance
• Relevant approval agencies (CE, UL, or equivalent)

The PSX1XLUB0080X meets all critical electrical parameters and maintains bolt mount compatibility, qualifying it as a direct substitute despite differences in fuse type geometry (square vs. rectangular) and application classification.

Parameter Comparison

Engineering Selection Recommendations

The PSX1XLUB0080X is the manufacturer-recommended substitute for the obsolete SPNH080.XXDLMS. Both components are manufactured by Littelfuse Inc. and share identical electrical specifications: 80A current rating, 1.5 kVDC voltage rating, and fast blow response time. Both maintain bolt mount configuration and achieve ROHS3 compliance with unlimited moisture sensitivity rating.

The PSX1XLUB0080X carries active product status, ensuring ongoing availability and supply chain continuity. The component holds CE and UL certifications, providing regulatory compliance for industrial applications. The higher breaking capacity of 200 kA in the PSX1XLUB0080X compared to 30 kA in the original part represents an engineering improvement that does not compromise compatibility.

Physical dimensions differ slightly between the two parts, requiring verification of mounting cavity dimensions in the target application. The PSX1XLUB0080X features an indicating function not present in the original part, providing additional operational visibility.

Frequently Asked Questions (FAQ)

Q: Can PSX1XLUB0080X directly replace SPNH080.XXDLMS in existing installations?

A: Electrical compatibility is confirmed through matching current rating (80A), voltage rating (1.5 kVDC), and response time (fast blow). Mechanical compatibility requires verification of bolt mount cavity dimensions, as the PSX1XLUB0080X has slightly different physical dimensions (4.988" L x 2.028" W x 2.264" H versus 5.165" L x 2.008" W x 2.008" H).

Q: What are the key differences between these two fuses?

A: Primary differences include fuse type geometry (rectangular versus square), breaking capacity (30 kA versus 200 kA), and the presence of an indicating feature in the PSX1XLUB0080X. Electrical performance parameters remain identical.

Q: Are both parts RoHS compliant?

A: Both SPNH080.XXDLMS and PSX1XLUB0080X are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: Why is the PSX1XLUB0080X classified for semiconductors while the original targets photovoltaic applications?

A: Application classification reflects primary market focus. Both components meet identical electrical and mechanical specifications, making them functionally interchangeable across applications requiring 80A 1.5 kVDC fast blow fuses with bolt mount configuration.

Q: What is the significance of the higher breaking capacity in the substitute part?

A: The PSX1XLUB0080X breaking capacity of 200 kA exceeds the original 30 kA specification, providing enhanced fault current handling capability. This represents a performance improvement that maintains backward compatibility.