Littelfuse 0326025.VXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0326025.VXP is a 25 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This slow-blow fuse is designed for applications requiring holder-based mounting in 3AB, 3AG, or 1/4" x 1-1/4" configurations. The part maintains active product status with 1180 pieces in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

0326025.VXP

Littelfuse Inc.In Stock: 12750326025.VXP Datasheet

Current PartRFQ

0326025.HXP

Littelfuse Inc.In Stock: 11140326025.HXP Datasheet

Parametric EquivalentRFQ

0326025.MXP

Littelfuse Inc.In Stock: 22350326025.MXP Datasheet

Parametric EquivalentRFQ

0001.2538

SCHURTER Inc.In Stock: 14620001.2538 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents (0326025.HXP, 0326025.MXP): These Littelfuse parts maintain identical electrical specifications across all critical parameters: 25 A current rating, 250 V AC / 125 V DC voltage ratings, slow-blow response time, 3AB/3AG package compatibility, 400 A AC / 600 A DC breaking capacity, 1030 melting I²t, and -55°C ~ 125°C operating temperature range. Physical dimensions, DC cold resistance, and RoHS3 compliance are identical. These parts differ only in internal construction or manufacturing process variant designations (HXP vs. MXP vs. VXP). Approval agencies include K-MARK certification in addition to CE, CSA, PSE, and UL.

Direct Manufacturer Substitute (0001.2538 by SCHURTER Inc.): This part shares the same 25 A current rating, slow-blow response time, ceramic cartridge construction, and 3AB/3AG package compatibility. However, voltage ratings are reduced to 150 V AC / 63 V DC, and breaking capacity increases to 1 kA AC / 20 kA DC. Melting I²t is 1390, operating temperature range is -40°C ~ 85°C, and physical dimensions are 0.250" Dia x 1.252" L. This part is suitable only for applications with lower voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Full Electrical Equivalence): Parts 0326025.HXP and 0326025.MXP are direct parametric equivalents to 0326025.VXP. All critical electrical parameters—current rating, AC/DC voltage ratings, breaking capacity, melting I²t, and operating temperature range—are identical. These parts are suitable for one-to-one replacement in any application currently using 0326025.VXP. Both maintain ROHS3 compliance and active product status. The 0326025.MXP variant offers the highest current inventory (2200 pieces), while 0326025.HXP provides an alternative with 1026 pieces available. Both include K-MARK certification in addition to CE, CSA, PSE, and UL approvals.

For Voltage-Reduced Applications: The SCHURTER 0001.2538 is suitable only for applications with maximum voltage requirements of 150 V AC and 63 V DC. This part is not a direct substitute for the 0326025.VXP in circuits designed for 250 V AC / 125 V DC operation. However, it may be considered for lower-voltage applications where the increased breaking capacity (1 kA AC / 20 kA DC) and higher melting I²t (1390) provide additional protection margins. The cURus approval agency designation differs from the Littelfuse variants. Operating temperature range is limited to -40°C ~ 85°C.

Compliance Considerations: All four parts maintain ROHS3 compliance and active product status. The Littelfuse variants (0326025.VXP, 0326025.HXP, 0326025.MXP) share identical regulatory approvals with the addition of K-MARK for the HXP and MXP variants. Selection should prioritize inventory availability and regulatory requirements specific to the target application region.

Frequently Asked Questions (FAQ)

Q: Can 0326025.HXP or 0326025.MXP be used as direct replacements for 0326025.VXP?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, including 25 A current rating, 250 V AC / 125 V DC voltage ratings, slow-blow response time, breaking capacity, melting I²t, and operating temperature range. Physical dimensions and package compatibility (3AB, 3AG, 1/4" x 1-1/4") are identical. These parts are suitable for direct one-to-one substitution.

Q: What is the difference between 0326025.VXP, 0326025.HXP, and 0326025.MXP?

A: The three parts are electrically and mechanically identical. The suffix designations (VXP, HXP, MXP) indicate different manufacturing process variants or internal construction methods used by Littelfuse. From an engineering perspective, they are interchangeable. The HXP and MXP variants include K-MARK certification in addition to CE, CSA, PSE, and UL approvals.

Q: Can the SCHURTER 0001.2538 replace the Littelfuse 0326025.VXP?

A: No, not for applications requiring 250 V AC / 125 V DC operation. The SCHURTER part is rated for only 150 V AC / 63 V DC. It is suitable only for lower-voltage applications. Using this part in a circuit designed for higher voltages will result in inadequate protection and potential safety hazards.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts—0326025.VXP, 0326025.HXP, 0326025.MXP, and 0001.2538—are ROHS3 compliant and maintain active product status.

Q: What are the key parameters that determine substitution compatibility?

A: For the Littelfuse variants, the critical parameters are current rating (25 A), AC voltage rating (250 V), DC voltage rating (125 V), response time (slow blow), package type (3AB/3AG), and physical dimensions (0.250" Dia x 1.250" L). All three Littelfuse parts match these specifications exactly. For the SCHURTER part, voltage ratings are the primary limiting factor, making it unsuitable for full-voltage applications.

Q: Which substitute part has the highest inventory availability?

A: The 0326025.MXP variant has the highest inventory with 2200 pieces in stock, compared to 1180 pieces for 0326025.VXP and 1026 pieces for 0326025.HXP.

Q: Do all parts use the same holder type?

A: Yes. All four parts require the same holder types: 3AB, 3AG, or 1/4" x 1-1/4" configurations. Physical dimensions are virtually identical (0.250" Dia x 1.250" L for Littelfuse parts; 0.250" Dia x 1.252" L for SCHURTER), ensuring mechanical compatibility with standard fuse holders.