Littelfuse 0325030.MXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0325030.MXP is a 30 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This slow-blow fuse is designed for through-hole mounting in 3AB/3AG package format with dimensions of 0.275" diameter by 1.288" length. The component maintains active product status and is widely used in industrial and commercial electrical protection circuits where reliable overcurrent protection is required across AC and DC applications.

Substitute parts become necessary when primary inventory is depleted, when supply chain constraints affect availability, or when design flexibility allows for functionally equivalent alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

0325030.MXP

Littelfuse Inc.In Stock: 163420325030.MXP Datasheet

Current PartRFQ

0325030.HXP

Littelfuse Inc.In Stock: 10380325030.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0325030.MXP is determined by strict equivalence across the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow 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)
• Breaking Capacity @ Rated Voltage: 400 A AC, 600 A DC (exact match required)
• Melting I²t: 1690 (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• DC Cold Resistance: 0.0019 Ohms (exact match required)

The substitute part 0325030.HXP meets all these criteria and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 0325030.MXP and 0325030.HXP are active products manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and supply chain considerations.

The 0325030.MXP currently maintains higher inventory levels (16,311 pcs) compared to the 0325030.HXP (945 pcs). Both parts carry equivalent regulatory certifications including CE, CSA, K-MARK, PSE, and UL approval, ensuring compliance with international electrical safety standards. Both are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

From an engineering perspective, either part is suitable for direct substitution in applications requiring 30 A ceramic cartridge fuse protection at 250 V AC / 125 V DC with slow-blow response characteristics.

Frequently Asked Questions (FAQ)

Q: Can 0325030.HXP be used as a direct replacement for 0325030.MXP?

A: Yes. The 0325030.HXP is a parametric equivalent with identical current rating, voltage ratings, fuse type, response time, package format, breaking capacity, melting I²t, operating temperature range, and DC cold resistance. Direct substitution is electrically and mechanically compatible.

Q: Are there any differences in regulatory compliance between these parts?

A: No. Both parts carry identical approval certifications (CE, CSA, K-MARK, PSE, UL) and maintain the same RoHS3 compliance status and REACH unaffected designation.

Q: What determines whether a fuse can substitute for the 0325030.MXP?

A: Substitution requires exact equivalence across all electrical parameters (30 A current rating, 250 V AC, 125 V DC), mechanical specifications (3AB/3AG package, 0.275" x 1.288" dimensions), response characteristics (slow-blow, 1690 melting I²t), and performance ratings (400 A AC / 600 A DC breaking capacity).

Q: Can fuses with different current ratings or voltage ratings be used interchangeably?

A: No. Current rating and voltage rating are critical safety parameters. Using a fuse with different ratings will result in incorrect circuit protection and potential safety hazards.

Q: What is the significance of the 3AB/3AG package designation?

A: The 3AB/3AG designation specifies the physical form factor and electrical characteristics of the cartridge fuse. This standardized package ensures mechanical fit in corresponding fuse holders and establishes performance parameters. Substitutes must use identical package designation.

Q: Are there inventory considerations when selecting between these parts?

A: Yes. The 0325030.MXP has significantly higher current inventory (16,311 pcs) versus the 0325030.HXP (945 pcs). Supply chain and lead time requirements may influence part selection despite electrical equivalence.