SPNH200.X2XLDL Equivalent & Substitute Parts

Part Overview

The SPNH200.X2XLDL is a 200A 1.5 kVDC photovoltaic fuse manufactured by Littelfuse Inc. in the POWR-GARD® SPNH series. This rectangular bolt-mount fuse is designed for solar (photovoltaic) applications with fast-blow response characteristics and a breaking capacity of 30kA at rated voltage. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for continued system support and component replacement in existing installations.

Substiute Parts

SPNH200.X2XLDL

Littelfuse Inc.In Stock: 1100SPNH200.X2XLDL Datasheet

Current PartRFQ

PSX1XLUB0200X

Littelfuse Inc.In Stock: 1036PSX1XLUB0200X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPNH200.X2XLDL is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Current Rating: 200A (exact match required)
• Voltage Rating: 1.5 kVDC (exact match required)
• Response Time: Fast Blow (functional equivalence)

Mechanical Compatibility Requirements:

• Mounting Type: Bolt Mount (required for installation compatibility)
• Physical form factor: Rectangular or square blade configuration (both compatible with bolt-mount systems)

Regulatory & Environmental Requirements:

• RoHS3 Compliance (mandatory for equivalent status)
• Moisture Sensitivity Level 1 (unlimited shelf life compatibility)
• Approval certifications from recognized agencies (CE, UL, or equivalent)

The PSX1XLUB0200X meets all critical electrical parameters (200A, 1.5 kVDC, fast-blow) and mechanical requirements (bolt mount). While the PSX series is classified for semiconductor applications versus the SPNH series' photovoltaic focus, both fuses operate within identical electrical specifications and regulatory frameworks, establishing functional equivalence for replacement purposes.

Parameter Comparison

Engineering Selection Recommendations

The PSX1XLUB0200X is the manufacturer-recommended substitute for the obsolete SPNH200.X2XLDL. Selection is based on the following engineering criteria:

Electrical Equivalence: Both fuses share identical current (200A) and voltage (1.5 kVDC) ratings with matching fast-blow response characteristics, ensuring equivalent circuit protection performance.

Regulatory Compliance: Both parts maintain ROHS3 compliance and carry recognized certifications (CE, UL). The PSX1XLUB0200X holds cURus certification in addition to CE and UL, providing expanded regulatory coverage.

Mechanical Compatibility: Both employ bolt-mount configurations, ensuring installation compatibility within existing mounting systems. The dimensional difference between rectangular (SPNH) and square (PSX) form factors does not affect electrical function or bolt-mount interface compatibility.

Product Status: The PSX1XLUB0200X maintains active production status with confirmed inventory availability (926 pcs), ensuring long-term supply continuity compared to the obsolete SPNH200.X2XLDL.

Enhanced Performance Characteristics: The PSX1XLUB0200X provides superior breaking capacity (200kA versus 30kA) and defined operating temperature range (-55°C ~ 125°C), offering enhanced reliability margins in the replacement application.

Frequently Asked Questions (FAQ)

Q: Can the PSX1XLUB0200X directly replace the SPNH200.X2XLDL in existing installations?

A: Yes. Both fuses share identical electrical specifications (200A, 1.5 kVDC, fast-blow response) and bolt-mount mechanical interfaces. The form factor difference (rectangular versus square) does not affect functional compatibility or mounting compatibility.

Q: What is the significance of the different breaking capacities (30kA versus 200kA)?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. The PSX1XLUB0200X's higher breaking capacity (200kA) provides enhanced safety margins and is suitable for applications with higher available fault currents. This represents an improvement over the original specification.

Q: Are there regulatory compliance differences between the two fuses?

A: Both fuses maintain ROHS3 compliance and carry CE and UL certifications. The PSX1XLUB0200X additionally holds cURus certification. Both are REACH Unaffected and classified as EAR99 for export purposes.

Q: How do the melting I²t values affect substitution suitability?

A: The melting I²t (22000 for SPNH versus 18016 for PSX) represents thermal energy required to melt the fuse element. The PSX1XLUB0200X's lower value indicates slightly faster thermal response. Both values fall within acceptable ranges for 200A fast-blow fuses at 1.5 kVDC.

Q: What is the inventory status for the substitute part?

A: The PSX1XLUB0200X is in active production with 926 pcs available in new original stock, ensuring reliable supply for replacement requirements.

Q: Are there application-specific considerations for photovoltaic systems?

A: Both fuses carry appropriate certifications for DC applications. The PSX1XLUB0200X is classified for semiconductor applications but meets all electrical and regulatory requirements for photovoltaic system protection at the specified voltage and current ratings.