SPNH080.XXDL Equivalent & Substitute Parts

Part Overview

The SPNH080.XXDL is an 80A 1.5 kVDC photovoltaic fuse manufactured by Littelfuse Inc. as part of the POWR-GARD® SPNH series. This rectangular bolt mount fuse is designed for solar (photovoltaic) applications with fast blow response characteristics. The product is currently obsolete, making identification of equivalent substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

SPNH080.XXDL

Littelfuse Inc.In Stock: 854SPNH080.XXDL Datasheet

Current PartRFQ

PSX1XLUB0080X

Littelfuse Inc.In Stock: 879PSX1XLUB0080X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPNH080.XXDL is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Current Rating: 80A (exact match required)
• Voltage Rating - DC: 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 (exact match required)

Regulatory & Compliance Requirements:

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

The PSX1XLUB0080X meets all critical electrical parameters (80A, 1.5 kVDC, Fast Blow) and mechanical mounting requirements (Bolt Mount). Both parts utilize rectangular blade packaging compatible with bolt mount installations. The substitute part is active in production status and maintains full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The PSX1XLUB0080X is the manufacturer-recommended substitute for the obsolete SPNH080.XXDL. Both components share identical electrical ratings (80A, 1.5 kVDC, Fast Blow) and compatible bolt mount mechanical configurations with rectangular blade packaging.

The PSX1XLUB0080X offers the following advantages:

• Active production status ensures long-term availability and supply chain continuity
• Higher breaking capacity (200kA vs. 30kA) provides enhanced fault protection capability
• Defined operating temperature range (-55°C ~ 125°C) supports broader environmental applications
• Maintained regulatory compliance with CE, cURus, and UL certifications
• ROHS3 compliance alignment with current environmental standards

The substitute part is suitable for direct replacement in existing bolt mount fuse holder installations designed for rectangular blade fuses rated at 80A, 1.5 kVDC.

Frequently Asked Questions (FAQ)

Q: Can the PSX1XLUB0080X be used as a direct replacement for the SPNH080.XXDL?

A: Yes. Both fuses share identical current rating (80A), voltage rating (1.5 kVDC), response time (Fast Blow), and bolt mount mechanical configuration with rectangular blade packaging. The substitute part is compatible with existing fuse holders designed for the original component.

Q: What is the significance of the different melting I²t values (5000 vs. 2048)?

A: The melting I²t parameter defines the thermal energy required to melt the fuse element. The PSX1XLUB0080X has a lower melting I²t value, indicating faster thermal response to overcurrent conditions. This represents a more sensitive protection characteristic suitable for semiconductor applications.

Q: Why is the breaking capacity different between the two parts?

A: The SPNH080.XXDL has a breaking capacity of 30kA, while the PSX1XLUB0080X has 200kA. Both values are rated at 1.5 kVDC. The higher breaking capacity of the substitute part indicates enhanced capability to safely interrupt fault currents, providing improved system protection.

Q: Are there any dimensional differences between the two fuses?

A: Yes. The SPNH080.XXDL measures 5.165" L x 2.008" W x 2.008" H (131.20mm x 51.00mm x 51.00mm). The PSX1XLUB0080X measures 4.988" L x 2.028" W x 2.264" H (126.70mm x 51.50mm x 57.50mm). Verify that the substitute part fits within the available space in your fuse holder assembly before installation.

Q: What regulatory certifications apply to the substitute part?

A: The PSX1XLUB0080X holds CE, cURus, and UL certifications. The original SPNH080.XXDL held CE, gPV, IEC, and UL certifications. Both parts maintain UL and CE compliance. Verify that the cURus certification meets your specific regional or application requirements.

Q: Is the PSX1XLUB0080X suitable for photovoltaic applications?

A: The PSX1XLUB0080X is classified for semiconductor applications. The original SPNH080.XXDL was specifically designed for solar (photovoltaic) applications. While both fuses meet the same electrical and mechanical specifications, confirm that the substitute part meets any application-specific requirements for your photovoltaic system.