Littelfuse 0326.010H Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0326.010H is a 10 mA, 250 V AC/DC ceramic cartridge fuse designed for 3AB and 3AG holder applications. This fuse features slow-blow response characteristics and is rated for 100 A breaking capacity. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component procurement.

Substiute Parts

0326.010H

Littelfuse Inc.In Stock: 9500326.010H Datasheet

Current PartRFQ

0326.010HXP

LittelfuseIn Stock: 8200326.010HXP Datasheet

DirectRFQ

0326.010MXP

Littelfuse Inc.In Stock: 11800326.010MXP Datasheet

Parametric EquivalentRFQ

0326.010VXP

Littelfuse Inc.In Stock: 8640326.010VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0326.010H are qualified based on strict electrical and mechanical parameter matching:

Qualifying Parameters for Substitution:

• Current Rating: 10 mA (exact match required)
• Voltage Rating (AC): 250 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" (exact match required)
• Breaking Capacity @ Rated Voltage: 100 A (exact match required)
• Melting I²t: 0.00148 (exact match required)

All three substitute parts—0326.010HXP, 0326.010MXP, and 0326.010VXP—meet these electrical and mechanical requirements and are therefore direct parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—0326.010HXP, 0326.010MXP, and 0326.010VXP—are parametrically equivalent to the obsolete 0326.010H and satisfy identical electrical and mechanical requirements for direct substitution.

0326.010HXP is the primary recommended substitute. It maintains active product status and carries the broadest certification portfolio, including CE, CSA, ICC, PSE, SEMKO, TUV, UR, and VDE approvals. This part achieves ROHS3 compliance and specifies an operating temperature range of -55°C to 125°C.

0326.010MXP and 0326.010VXP are secondary alternatives. Both are active products with ROHS3 compliance and -55°C to 125°C operating temperature ratings. These parts carry CE certification. The selection between these two and 0326.010HXP should be based on availability and procurement lead times, as all three are electrically and mechanically identical.

Frequently Asked Questions (FAQ)

Q: Can the 0326.010HXP, 0326.010MXP, and 0326.010VXP be used interchangeably with the 0326.010H?

A: Yes. All three substitute parts match the critical electrical parameters (10 mA current rating, 250 V AC voltage rating, 0.00148 melting I²t, 100 A breaking capacity) and mechanical specifications (3AB/3AG package, 1/4" x 1-1/4" dimensions) of the original part. They are direct parametric equivalents.

Q: What is the primary advantage of using the substitute parts over the original 0326.010H?

A: The substitute parts are active products with current manufacturing status, whereas the 0326.010H is obsolete. Additionally, all three substitutes achieve ROHS3 compliance and include documented operating temperature ranges (-55°C to 125°C), providing improved regulatory alignment and environmental specifications.

Q: Are there differences in certification between the three substitute options?

A: Yes. The 0326.010HXP carries the most comprehensive certification set (CE, CSA, ICC, PSE, SEMKO, TUV, UR, VDE). The 0326.010MXP and 0326.010VXP both carry CE certification. Selection should be based on specific application certification requirements.

Q: Will the substitute parts fit existing 3AB and 3AG fuse holders?

A: Yes. All substitute parts maintain the identical 1/4" x 1-1/4" (6.35mm x 31.75mm) physical dimensions and are designed for 3AB and 3AG holder compatibility.

Q: Is there a difference in DC cold resistance between the original and substitute parts?

A: The original 0326.010H specifies 3300 Ohms DC cold resistance, while all three substitutes specify 3324.8 Ohms. This minor variation remains within acceptable tolerance for ceramic fuse applications and does not affect functional equivalence.