SPXV030.L Equivalent & Substitute Parts

Part Overview

The SPXV030.L is a 30A 1.5 kVDC cartridge fuse from Littelfuse Inc.'s POWR-GARD® SPXV series, designed for solar photovoltaic applications. This part is currently obsolete, making identification of suitable substitute components essential for system maintenance and new installations. The cartridge fuse requires a compatible holder for installation and is certified for CE and UR compliance.

Substiute Parts

SPXV030.L

Littelfuse Inc.In Stock: 1148SPXV030.L Datasheet

Current PartRFQ

SPXV030.LXM

Littelfuse Inc.In Stock: 787SPXV030.LXM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SPXV030.L is determined by strict equivalence in the following electrical and mechanical parameters:

• Current Rating: 30A (exact match required)
• Voltage Rating (DC): 1.5 kVDC (exact match required)
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Package / Case: Cartridge, Non-Standard (exact match required)
• Size / Dimension: Physical compatibility with existing holders

The SPXV030.LXM meets all substitution criteria as an active product from the same manufacturer and series, maintaining identical electrical ratings and mechanical form factor compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SPXV030.LXM is the manufacturer-recommended substitute for the obsolete SPXV030.L. Both components maintain identical electrical specifications (30A, 1.5 kVDC) and are designed for solar photovoltaic applications. The substitute part carries active product status with expanded certifications (CE, gPV, UL) compared to the original part (CE, UR), providing broader compliance coverage. The SPXV030.LXM features an increased breaking capacity of 50kA versus the original 15kA, representing an enhancement in fault protection capability. Both parts are RoHS compliant and maintain equivalent DC cold resistance and melting I²t characteristics within acceptable engineering tolerances. The dimensional difference in diameter (0.540" to 0.406") requires verification of compatibility with existing holder equipment before deployment.

Frequently Asked Questions (FAQ)

Q: Can the SPXV030.LXM be used as a direct replacement for the SPXV030.L?

A: The SPXV030.LXM is electrically equivalent with identical current and voltage ratings. Physical compatibility depends on the holder design. The substitute has a reduced diameter (0.406" versus 0.540"), which must be confirmed compatible with the existing fuse holder before installation.

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

A: The primary differences are product status (obsolete versus active), breaking capacity (15kA versus 50kA), certifications (UR versus gPV and UL), and physical diameter. Electrical ratings and melting characteristics remain equivalent.

Q: Are both parts suitable for solar photovoltaic applications?

A: Yes, both the SPXV030.L and SPXV030.LXM are specified for solar photovoltaic applications and carry appropriate certifications for this use.

Q: What should be verified before substituting the SPXV030.LXM?

A: Verify that the fuse holder accommodates the reduced diameter of the substitute part (0.406" versus 0.540"). Confirm that the expanded certifications (gPV, UL) meet system requirements. Validate that the increased breaking capacity (50kA) is compatible with system protection coordination.

Q: Is the SPXV030.LXM RoHS compliant?

A: Yes, the SPXV030.LXM is RoHS compliant. The original SPXV030.L is ROHS3 compliant. Both meet RoHS requirements for new installations.