3AB 6-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 3AB 6-R is a 6 A, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc. This fast-blow fuse is designed for applications requiring reliable overcurrent protection in AC circuits. The component is actively produced and maintains full compliance with international safety standards including CE, CSA, cULus, and PSE certifications. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, ensuring functional interchangeability within the same application context.

Substiute Parts

3AB 6-R

Bel Fuse Inc.In Stock: 20313AB 6-R Datasheet

Current PartRFQ

0314006.MXP

Littelfuse Inc.In Stock: 10030314006.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3AB 6-R is determined by the following critical parameters:

• Current Rating: 6 A (exact match required)
• Voltage Rating - AC: 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" (exact match required)
• Mounting Type: Requires Holder (exact match required)

The substitute part 0314006.MXP manufactured by Littelfuse Inc. meets all these critical parameters. Additional electrical characteristics such as DC voltage rating, breaking capacity, and melting I²t may vary between manufacturers while maintaining functional equivalence for AC applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 3AB 6-R and 0314006.MXP are active products with full regulatory compliance. The 3AB 6-R carries CE, CSA, cULus, and PSE approvals. The 0314006.MXP carries CE, CSA, K-MARK, PSE, and UL approvals. Selection between these parts should be based on application-specific approval requirements and supply chain availability. Both components satisfy the same electrical and mechanical interface requirements for 6 A, 250 V AC ceramic cartridge fuse applications.

Frequently Asked Questions (FAQ)

Q: Can 0314006.MXP be used as a direct replacement for 3AB 6-R?

A: Yes, 0314006.MXP meets all critical substitution parameters: identical current rating (6 A), AC voltage rating (250 V), fuse type (cartridge ceramic), response time (fast blow), package designation (3AB, 3AG, 1/4" x 1-1/4"), and mounting requirement (requires holder). Both components operate across the same temperature range (-55°C ~ 125°C).

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

A: The 3AB and 3AG designations refer to standardized fuse holder types. Both the main part and substitute are designed for use with these holder types, ensuring mechanical compatibility and proper electrical contact within the fuse holder assembly.

Q: Are there differences in breaking capacity between these parts?

A: Yes. The 3AB 6-R has a breaking capacity of 200 A at rated voltage, while 0314006.MXP has 750 A AC breaking capacity. Breaking capacity defines the maximum fault current the fuse can safely interrupt. Application requirements determine whether this difference is relevant to your selection.

Q: What does the melting I²t value indicate?

A: Melting I²t is a thermal energy parameter that characterizes fuse response. The 3AB 6-R has a melting I²t of 107, while 0314006.MXP has 45. Both are fast-blow fuses, but this parameter may affect coordination with other protective devices in the circuit.

Q: Are both parts RoHS and REACH compliant?

A: Yes, both the 3AB 6-R and 0314006.MXP are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and use.