3ABP 5-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 3ABP 5-R is a 5 A 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG form factor applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The fuse provides fast-blow response characteristics suitable for circuit protection in AC-rated applications up to 250 V.

Key Parameters

Parameter	Value
Current Rating	5 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Ceramic
Response Time	Fast Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (Axial)
Mounting Type	Through Hole
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 3ABP 5-R are qualified based on the following critical parameters:

Current Rating: 5 A (exact match required)
AC Voltage Rating: 250 V (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Fast Blow (exact match required)
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
Mounting Type: Through Hole (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

All three substitute parts from Littelfuse Inc. (0324005.HXP, 0324005.MXP, 0324005.VXP) meet these criteria. These parts are classified as active products, providing long-term availability compared to the obsolete 3ABP 5-R.

Parameter Comparison

Parameter	3ABP 5-R (Bel Fuse)	0324005.HXP (Littelfuse)	0324005.MXP (Littelfuse)	0324005.VXP (Littelfuse)
Current Rating (Amps)	5 A	5 A	5 A	5 A
Voltage Rating - AC	250 V	250 V	250 V	250 V
Voltage Rating - DC	Not specified	125 V	125 V	125 V
Fuse Type	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic
Response Time	Fast Blow	Fast Blow	Fast Blow	Fast Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (Axial)	3AB, 3AG, 1/4" x 1-1/4" (Axial)	3AB, 3AG, 1/4" x 1-1/4" (Axial)	3AB, 3AG, 1/4" x 1-1/4" (Axial)
Breaking Capacity @ Rated Voltage	200 A	750 A AC, 10 kA DC	750 A AC, 10 kA DC	750 A AC, 10 kA DC
Melting I²t	63	26	26	26
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
DC Cold Resistance	0.02 Ohms	0.03 Ohms	0.03 Ohms	0.03 Ohms
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active
Approval Agency	CE, CSA, cURus, PSE	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, KC, PSE, UL

Engineering Selection Recommendations

All three Littelfuse substitute parts (0324005.HXP, 0324005.MXP, 0324005.VXP) are direct functional equivalents for the obsolete 3ABP 5-R. Selection among these three active alternatives should be based on:

Product Availability: 0324005.MXP offers the highest inventory level (5038 pcs), followed by 0324005.HXP (1010 pcs) and 0324005.VXP (827 pcs).

Regulatory Compliance: All three substitute parts carry CE, CSA, and PSE certifications matching the original part. 0324005.HXP and 0324005.MXP include K-MARK certification, while 0324005.VXP includes KC certification, providing regional compliance flexibility.

Performance Characteristics: The substitute parts provide enhanced breaking capacity (750 A AC, 10 kA DC) compared to the original 3ABP 5-R (200 A), and include DC voltage rating (125 V) not specified in the original part. The lower melting I²t value (26 vs. 63) indicates faster thermal response in the substitute parts.

Frequently Asked Questions (FAQ)

Q: Can 0324005.HXP, 0324005.MXP, and 0324005.VXP be used interchangeably with the 3ABP 5-R?

A: Yes. All three Littelfuse parts meet the critical substitution parameters: 5 A current rating, 250 V AC voltage rating, ceramic cartridge type, fast-blow response, 3AB/3AG form factor, through-hole mounting, and -55°C to 125°C operating temperature range.

Q: What is the difference between the three Littelfuse substitute options?

A: The three parts (0324005.HXP, 0324005.MXP, 0324005.VXP) are functionally identical in electrical and mechanical specifications. Differences exist only in regulatory certifications (K-MARK vs. KC) and inventory availability. Selection should be based on regional compliance requirements and supply chain availability.

Q: Does the higher breaking capacity of the substitute parts affect compatibility?

A: No. Higher breaking capacity (750 A AC, 10 kA DC vs. 200 A) is a performance enhancement that does not compromise compatibility. The substitute parts provide superior circuit protection capability while maintaining identical current and voltage ratings.

Q: Are the physical dimensions of the substitute parts identical to the 3ABP 5-R?

A: The substitute parts have dimensions of 0.275" Dia x 1.288" L (6.99mm x 32.72mm) compared to the original 0.272" Dia x 1.280" L (6.90mm x 32.50mm). These minor dimensional variations remain within the 3AB/3AG form factor specification and do not affect mechanical fit in standard through-hole applications.

Q: What is the significance of the DC voltage rating on the substitute parts?

A: The substitute parts include a 125 V DC rating not specified in the original 3ABP 5-R. This additional rating expands application flexibility for circuits requiring DC protection, while maintaining full AC compatibility at 250 V.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message