Equivalent & Substitute Parts for 3ABP 2 Ceramic Fuse

Part Overview

The 3ABP 2 is a 2A 250VAC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG package format. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and new design implementations. Littelfuse Inc. produces direct functional equivalents in their 324 series that maintain electrical and mechanical compatibility while offering active product status and improved compliance certifications.

Substiute Parts

3ABP 2

Bel Fuse Inc.In Stock: 8073ABP 2 Datasheet

Current PartRFQ

0324002.HXP

Littelfuse Inc.In Stock: 11950324002.HXP Datasheet

DirectRFQ

0324002.MXP

Littelfuse Inc.In Stock: 10030324002.MXP Datasheet

DirectRFQ

0324002.VXP

Littelfuse Inc.In Stock: 10290324002.VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 324 series fuses (0324002.HXP, 0324002.MXP, 0324002.VXP) qualify as direct substitutes for the 3ABP 2 based on the following critical parameters:

• Current Rating: All substitutes maintain 2 A rating
• AC Voltage Rating: All substitutes maintain 250 V AC rating
• Package / Case: All substitutes use identical 3AB, 3AG, 1/4" x 1-1/4" (Axial) package
• Fuse Type: All substitutes are ceramic cartridge fuses with fast-blow response
• Mounting Type: All substitutes are through-hole mounted
• Breaking Capacity: All substitutes maintain 100A breaking capacity at rated voltage
• Operating Temperature: All substitutes maintain -55°C ~ 125°C range
• Approval Agencies: All substitutes carry CE, CSA, PSE, UL certifications

The three Littelfuse part numbers represent different internal construction variants within the same electrical and mechanical specification envelope, offering equivalent performance with interchangeable form factor and function.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse 324 series substitutes (0324002.HXP, 0324002.MXP, 0324002.VXP) are functionally equivalent for applications requiring 2A 250VAC ceramic cartridge fuses in 3AB/3AG package format. Selection among these three variants should be based on internal construction requirements specific to the application, as electrical and mechanical specifications are identical.

The Littelfuse substitutes provide the following advantages over the obsolete 3ABP 2:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance meets current environmental and regulatory requirements
• Enhanced DC breaking capacity (10kA DC versus unspecified for original) provides additional safety margin in DC applications
• Identical form factor, mounting type, and approval certifications ensure direct replacement capability

The minor dimensional variations (0.003" diameter and 0.008" length differences) fall within standard mechanical tolerances for through-hole mounted components and do not affect circuit board compatibility or functional performance.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0324002 series fuses directly replace the 3ABP 2 in existing designs?

A: Yes. The Littelfuse 324 series maintains identical current rating (2A), AC voltage rating (250V), package format (3AB/3AG), and mounting type (through-hole). Dimensional variations are within standard tolerances for this component class.

Q: What is the difference between 0324002.HXP, 0324002.MXP, and 0324002.VXP?

A: These three part numbers represent different internal construction variants within the Littelfuse 324 series. All three maintain identical electrical specifications and mechanical dimensions. Selection should be based on specific internal construction requirements for the application.

Q: Does the 3ABP 2 have a DC voltage rating?

A: The 3ABP 2 specification provided does not include a DC voltage rating. The Littelfuse substitutes specify 125V DC rating, which represents an additional capability not documented for the original part.

Q: Are there any compliance differences between the 3ABP 2 and Littelfuse substitutes?

A: The 3ABP 2 is RoHS non-compliant, while all Littelfuse 324 series substitutes are ROHS3 compliant. Both maintain identical CE, CSA, PSE, and UL certifications. The Littelfuse parts also specify MSL 1 (Unlimited) moisture sensitivity, indicating superior handling characteristics.

Q: What is the significance of the melting I²t difference (7.2 versus 11)?

A: The melting I²t value indicates the thermal energy required to melt the fuse element. The higher I²t value (11) in Littelfuse substitutes reflects different internal construction but maintains the same fast-blow response time and 2A current rating as the original 3ABP 2.

Q: Are the dimensional differences between parts significant?

A: The dimensional variations (0.003" diameter, 0.008" length) are within standard mechanical tolerances for ceramic cartridge fuses and do not affect circuit board compatibility, socket fit, or functional performance in standard through-hole applications.