3ABP 375 Ceramic Fuse Cartridge – Equivalent & Substitute Parts

Part Overview

The 3ABP 375 is a 375 mA, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc. in the 3AB/3AG form factor (1/4" x 1-1/4" axial). This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and new design implementations. Substitute parts must maintain electrical compatibility across AC voltage ratings, current ratings, and mechanical form factors while meeting applicable regulatory certifications.

Substiute Parts

3ABP 375

Bel Fuse Inc.In Stock: 12043ABP 375 Datasheet

Current PartRFQ

0324.375HXP

Littelfuse Inc.In Stock: 7560324.375HXP Datasheet

DirectRFQ

0324.375MXP

Littelfuse Inc.In Stock: 12130324.375MXP Datasheet

DirectRFQ

0324.375VXP

Littelfuse Inc.In Stock: 7400324.375VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3ABP 375 are qualified based on the following criteria:

• Current Rating: Exact match at 375 mA
• AC Voltage Rating: Exact match at 250 V
• Fuse Type & Package: Identical ceramic cartridge in 3AB/3AG form factor (1/4" x 1-1/4" axial)
• Response Time: Fast Blow characteristic maintained
• Mounting Configuration: Through Hole, axial orientation
• Operating Temperature: Compatible range of -55°C ~ 125°C
• Regulatory Compliance: CE, CSA, and UL certifications required

All three substitute parts (0324.375VXP, 0324.375HXP, 0324.375MXP) from Littelfuse Inc. meet these criteria. These parts are manufactured in the active product status, providing long-term availability compared to the obsolete 3ABP 375.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitute parts (0324.375VXP, 0324.375HXP, 0324.375MXP) are electrically and mechanically compatible with the 3ABP 375 for AC applications at 250 V and 375 mA. The substitute parts offer the following advantages:

• Active Product Status: Littelfuse parts are in active production, ensuring long-term availability and supply chain stability compared to the obsolete 3ABP 375.
• Enhanced Regulatory Compliance: All substitute parts carry CE, CSA, and UL certifications. The 3ABP 375 includes PSE certification, which is not present in the substitutes; however, CE, CSA, and UL certifications cover the primary markets for this component category.
• RoHS3 Compliance: Littelfuse substitutes meet RoHS3 requirements, whereas the 3ABP 375 is RoHS non-compliant. This is significant for applications subject to environmental regulations.
• Improved DC Capability: Substitute parts specify 125 V DC rating and 10 kA DC breaking capacity, providing additional design flexibility for mixed AC/DC circuit applications.
• Lower DC Cold Resistance: Littelfuse parts exhibit 0.82 Ohms versus 2 Ohms for the 3ABP 375, reducing resistive heating in DC circuits.

The three Littelfuse part numbers are functionally equivalent and interchangeable. Selection among them may be based on packaging availability, inventory levels, or internal part numbering conventions within your supply chain.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0324.375VXP, 0324.375HXP, or 0324.375MXP parts be used as direct replacements for the 3ABP 375?

A: Yes. All three Littelfuse parts are direct substitutes for AC applications at 250 V and 375 mA. They maintain identical current ratings, voltage ratings, fuse type, ceramic cartridge construction, 3AB/3AG form factor, fast-blow response time, and operating temperature range. Physical dimensions are equivalent within manufacturing tolerances.

Q: What is the difference between the three Littelfuse substitute part numbers?

A: The part numbers 0324.375VXP, 0324.375HXP, and 0324.375MXP are functionally identical in electrical and mechanical specifications. The differences in part numbering reflect internal Littelfuse product line designations or packaging variants. All three are suitable for substitution.

Q: Does the 3ABP 375 have a DC voltage rating?

A: The 3ABP 375 specifications provided do not include a DC voltage rating. The part is rated for 250 V AC. The substitute Littelfuse parts specify 125 V DC in addition to 250 V AC, providing expanded application flexibility.

Q: Are there any compatibility concerns with the lower melting I²t value in the substitute parts?

A: The Littelfuse substitutes have a melting I²t of 0.05 compared to 0.07 for the 3ABP 375. This indicates faster thermal response in the substitute parts. For AC-only applications at the specified 375 mA and 250 V rating, this difference is within the design envelope of ceramic fast-blow fuses and does not compromise compatibility. Circuit protection characteristics remain appropriate for the rated current and voltage.

Q: Is the PSE certification loss significant when switching from 3ABP 375 to Littelfuse substitutes?

A: The 3ABP 375 carries PSE (Product Safety Electrical) certification, which is specific to Japanese market requirements. The Littelfuse substitutes carry CE, CSA, and UL certifications, which cover North American and European markets. If your application requires PSE certification specifically, the Littelfuse substitutes may not be suitable without additional qualification. For most industrial and commercial applications outside Japan, CE, CSA, and UL certifications are the primary regulatory requirements.

Q: Can these fuses be used in DC circuits?

A: The 3ABP 375 is rated for AC only. The Littelfuse substitute parts are rated for both 250 V AC and 125 V DC. If your application involves DC circuits, the Littelfuse substitutes provide this capability, but the 3ABP 375 does not.