Equivalent & Substitute Parts for 0325025.MXP

Part Overview

The 0325025.MXP is a 25 A ceramic cartridge fuse manufactured by Littelfuse Inc., rated for 125 V AC/DC operation with slow-blow response characteristics. This fuse is designed for through-hole mounting in 3AB, 3AG form factor (1/4" x 1-1/4" axial). The product is currently active and widely stocked, with 18,941 pieces available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across different voltage ratings and manufacturer specifications.

Substiute Parts

0325025.MXP

Littelfuse Inc.In Stock: 189860325025.MXP Datasheet

Current PartRFQ

8020.0606.PT

SCHURTER Inc.In Stock: 16668020.0606.PT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 8020.0606.PT manufactured by SCHURTER Inc. qualifies as a substitute for the 0325025.MXP based on the following alignment of critical parameters:

Matching Parameters:

• Current Rating: 25 A (identical)
• Fuse Type: Cartridge, Ceramic (identical)
• Response Time: Slow Blow (identical)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (identical)
• Mounting Type: Through Hole (identical)
• Melting I²t: 1010 (within acceptable tolerance of 1030)
• DC Cold Resistance: 0.0021 Ohms (comparable to 0.0024 Ohms)
• RoHS Status: ROHS3 Compliant (identical)

Differing Parameters:

• Voltage Rating - AC: 250 V (higher than 125 V)
• Breaking Capacity: 500A (higher than 400A AC)
• Operating Temperature Range: -40°C ~ 85°C (narrower than -55°C ~ 125°C)
• Approval Agencies: cURus (different certification set)

The substitute part operates at a higher voltage rating, which provides compatibility in circuits designed for the original 125 V specification. The dimensional similarity (0.270" Dia x 1.291" L versus 0.275" Dia x 1.288" L) ensures mechanical fit within standard 3AB, 3AG fuse holders.

Parameter Comparison

Engineering Selection Recommendations

Both the 0325025.MXP and 8020.0606.PT are active products with current manufacturing status and full regulatory compliance. The Littelfuse part carries broader approval agency certifications (CE, CSA, K-MARK, PSE, UL) compared to the SCHURTER part (cURus). Selection between these parts depends on circuit voltage requirements and temperature operating conditions.

For applications operating at or below 125 V AC/DC with temperature extremes approaching -55°C or exceeding 85°C, the 0325025.MXP is the appropriate choice. For circuits rated at higher voltages (up to 250 V AC/DC) with moderate temperature ranges (-40°C to 85°C), the 8020.0606.PT provides equivalent protection with enhanced voltage margin. Both parts maintain comparable melting I²t characteristics and low DC cold resistance, ensuring consistent overcurrent response in their respective operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the 8020.0606.PT replace the 0325025.MXP in all applications?

A: The 8020.0606.PT is mechanically and electrically compatible for circuits operating at 125 V AC/DC or lower. The higher voltage rating (250 V) of the substitute does not create incompatibility in lower-voltage circuits. However, if the application requires operation below -40°C or above 85°C, the original 0325025.MXP must be used due to its extended temperature range.

Q: Are the physical dimensions identical between these two fuses?

A: The dimensions are nearly identical within manufacturing tolerance. The 0325025.MXP measures 0.275" Dia x 1.288" L, while the 8020.0606.PT measures 0.270" Dia x 1.291" L. Both conform to the 3AB, 3AG form factor and fit standard through-hole fuse holders without modification.

Q: What is the significance of the melting I²t difference (1030 vs. 1010)?

A: The melting I²t values represent the thermal energy required to melt the fuse element. The difference of 20 units (approximately 1.9%) is within acceptable engineering tolerance and does not affect substitution suitability. Both fuses provide equivalent slow-blow response characteristics for 25 A circuits.

Q: Which certifications should I prioritize for my application?

A: The 0325025.MXP carries UL, CSA, CE, K-MARK, and PSE certifications, providing broader geographic and industry acceptance. The 8020.0606.PT carries cURus certification. Verify that your application requirements align with the certification standards applicable to your market and regulatory jurisdiction.

Q: Does the lower DC cold resistance of the 8020.0606.PT (0.0021 Ohms) affect circuit performance?

A: The difference in DC cold resistance (0.0024 Ohms versus 0.0021 Ohms) is negligible for typical circuit applications. Both values are sufficiently low to prevent voltage drop issues in standard fuse holder installations.