3AB 10 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 3AB 10 is a ceramic cartridge fuse rated for 10 A at 250 V AC/DC with fast-blow response characteristics. Manufactured by Bel Fuse Inc., this component is designed for use in 3AB and 3AG fuse holders with standard 1/4" x 1-1/4" dimensions. The main part (3AB 10) carries an obsolete product status, making identification of active equivalent parts essential for ongoing system maintenance and new designs.

Substiute Parts

3AB 10

Bel Fuse Inc.In Stock: 11133AB 10 Datasheet

Current PartRFQ

3AB 10-R

Bel Fuse Inc.In Stock: 20333AB 10-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3AB 10-R qualifies as a direct substitute for the 3AB 10 based on the following critical parameters:

• Current Rating: Both rated at 10 A
• Voltage Rating (AC): Both rated at 250 V
• Fuse Type: Both are Cartridge, Ceramic
• Response Time: Both exhibit Fast Blow characteristics
• Package / Case: Both use 3AB, 3AG, 1/4" x 1-1/4" form factor
• Breaking Capacity: Both rated at 200 A @ rated voltage
• Melting I²t: Both specify 316
• Operating Temperature: Both operate across -55°C ~ 125°C
• Physical Dimensions: Both measure 0.250" Dia x 1.252" L (6.35mm x 31.80mm)

The 3AB 10-R maintains electrical and mechanical compatibility with the obsolete 3AB 10, enabling direct replacement in existing applications.

Parameter Comparison

Engineering Selection Recommendations

The 3AB 10-R is the appropriate substitute for the obsolete 3AB 10 ceramic fuse. The substitute maintains identical electrical specifications (10 A, 250 V AC, Fast Blow) and mechanical compatibility (3AB/3AG holder, 1/4" x 1-1/4" form factor).

The 3AB 10-R carries Active product status, ensuring continued availability and supply chain reliability. The substitute achieves ROHS3 compliance, whereas the original part is RoHS non-compliant, providing environmental and regulatory advantages for new designs and system upgrades. Both parts hold equivalent international certifications (CE, CSA, PSE), with the substitute adding cURus certification. The marginal difference in DC cold resistance (0.008 Ohms vs. 0.009 Ohms) is negligible for circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 3AB 10-R directly replace the 3AB 10 in existing applications?

A: Yes. The 3AB 10-R is electrically and mechanically identical to the 3AB 10. Both fuses are rated for 10 A at 250 V AC/DC, exhibit fast-blow response, and fit standard 3AB and 3AG fuse holders. No circuit modifications are required.

Q: What is the significance of the product status difference between 3AB 10 and 3AB 10-R?

A: The 3AB 10 is classified as Obsolete, indicating discontinued production and limited availability. The 3AB 10-R is Active, ensuring ongoing manufacturing and reliable supply for current and future applications.

Q: Does the RoHS compliance difference affect substitution?

A: The 3AB 10-R achieves ROHS3 compliance while the 3AB 10 is RoHS non-compliant. For new designs and systems subject to environmental regulations, the 3AB 10-R is the preferred choice. For legacy system maintenance where the original part is already installed, either part remains functionally compatible.

Q: Are there any differences in fuse holder compatibility?

A: No. Both the 3AB 10 and 3AB 10-R use identical package specifications (3AB, 3AG, 1/4" x 1-1/4"). They are fully interchangeable in any fuse holder designed for these dimensions.

Q: What certifications apply to both parts?

A: Both fuses hold CE, CSA, and PSE certifications. The 3AB 10 additionally carries UL approval, while the 3AB 10-R carries cURus approval. Both certification sets are recognized for industrial and consumer protection applications.