3ABP 1.6-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 3ABP 1.6-R is a 1.6 A, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG form factor. This fuse is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and component sourcing. The fast-blow response characteristic and ceramic construction provide reliable overcurrent protection in industrial and commercial applications.

Substiute Parts

3ABP 1.6-R

Bel Fuse Inc.In Stock: 9823ABP 1.6-R Datasheet

Current PartRFQ

051401.6MXEP

Littelfuse Inc.In Stock: 2209051401.6MXEP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3ABP 1.6-R is determined by the following critical parameters:

• Current Rating: Must match 1.6 A exactly
• Package / Case: Must conform to 3AB/3AG form factor with identical physical dimensions (1/4" x 1-1/4" axial)
• Fuse Type: Must be ceramic cartridge construction
• Mounting Type: Must support through-hole installation
• Response Time: Must maintain fast-blow characteristic
• Operating Temperature Range: Must encompass or exceed -55°C ~ 125°C

The substitute part 051401.6MXEP (Littelfuse Inc., Series 514) satisfies all critical substitution criteria. While the voltage rating differs (500 V AC versus 250 V AC), this represents an upgrade in voltage capability and does not compromise compatibility in applications rated for 250 V AC operation. The identical current rating, package form factor, ceramic construction, and fast-blow response ensure functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 051401.6MXEP represents a direct functional substitute for the obsolete 3ABP 1.6-R. Selection rationale is based on the following factors:

Product Status: The 3ABP 1.6-R is obsolete, whereas the 051401.6MXEP is active and maintains current manufacturing support and availability.

Compliance & Certifications: Both parts maintain ROHS3 compliance and REACH unaffected status. The 051401.6MXEP carries CE and cURus certifications, ensuring regulatory alignment for industrial applications.

Physical Compatibility: Dimensional variance between the two parts is minimal (0.003" diameter difference, 0.008" length difference), ensuring compatibility with existing through-hole mounting footprints.

Electrical Upgrade: The 051401.6MXEP provides enhanced voltage rating (500 V AC versus 250 V AC) and superior breaking capacity (5 kA versus 100 A), offering improved performance margins without compromising the 1.6 A current protection function.

Frequently Asked Questions (FAQ)

Q: Can the 051401.6MXEP be used as a direct replacement for the 3ABP 1.6-R?

A: Yes. Both parts share identical current ratings (1.6 A), package form factors (3AB/3AG), ceramic construction, fast-blow response, and operating temperature ranges. The higher voltage rating of the substitute part does not prevent operation in 250 V AC circuits.

Q: What is the significance of the voltage rating difference?

A: The 051401.6MXEP operates at 500 V AC, compared to the 3ABP 1.6-R at 250 V AC. In applications designed for 250 V AC operation, the higher voltage rating of the substitute provides additional safety margin and does not affect the 1.6 A current protection threshold.

Q: Are there dimensional compatibility concerns?

A: Dimensional differences are negligible. The 051401.6MXEP measures 0.275" diameter x 1.288" length versus 0.272" diameter x 1.280" length for the 3ABP 1.6-R. These variations fall within standard manufacturing tolerances and do not compromise through-hole mounting compatibility.

Q: What certifications apply to the substitute part?

A: The 051401.6MXEP carries CE and cURus certifications, meeting international safety and regulatory requirements for industrial and commercial applications.

Q: How do the melting I²t values compare?

A: The 3ABP 1.6-R has a melting I²t of 4.2, while the 051401.6MXEP has 1.92. The lower I²t value of the substitute indicates faster thermal response, providing more sensitive overcurrent protection.

Q: Is the substitute part available in active production?

A: Yes. The 051401.6MXEP (Series 514) is classified as active product status with current manufacturing support, ensuring long-term availability and supply chain reliability.