3AP 750-R Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The 3AP 750-R is a 750 mA, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Bel Fuse Inc. in the 3AB/3AG package format (1/4" x 1-1/4" axial). This part is classified as obsolete. Equivalent substitute parts are necessary to maintain circuit protection functionality in applications where the original 3AP 750-R is no longer available from the original manufacturer.

Substiute Parts

3AP 750-R

Bel Fuse Inc.In Stock: 12463AP 750-R Datasheet

Current PartRFQ

0318.750HXP

Littelfuse Inc.In Stock: 8350318.750HXP Datasheet

SimilarRFQ

0318.750MXP

Littelfuse Inc.In Stock: 11420318.750MXP Datasheet

SimilarRFQ

0318.750VXP

Littelfuse Inc.In Stock: 11100318.750VXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3AP 750-R are qualified based on the following electrical and mechanical parameters:

• Current Rating: 750 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these criteria and are manufactured by Littelfuse Inc., an active manufacturer with current product availability.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitute parts (0318.750HXP, 0318.750MXP, 0318.750VXP) are functionally equivalent to the 3AP 750-R for circuit protection applications. Selection among these substitutes may be based on packaging availability and inventory status:

• 0318.750MXP: 1063 pieces in stock
• 0318.750VXP: 1035 pieces in stock
• 0318.750HXP: 818 pieces in stock

All substitute parts carry active product status from Littelfuse Inc., ensuring long-term availability and supply chain continuity. All parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original 3AP 750-R.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0318.750HXP, 0318.750MXP, or 0318.750VXP be used as direct replacements for the 3AP 750-R?

A: Yes. All three Littelfuse parts meet the electrical and mechanical specifications required for substitution: 750 mA current rating, 250 V AC voltage rating, fast-blow response, 3AB/3AG package format, and through-hole mounting. Physical dimensions are within tolerance for standard fuse holder compatibility.

Q: What is the difference between the three Littelfuse substitute parts?

A: The 0318.750HXP, 0318.750MXP, and 0318.750VXP are electrically and mechanically identical. Differences exist only in packaging designation and internal manufacturing variants. All three are functionally equivalent for circuit protection.

Q: Are the substitute parts certified to the same standards as the original 3AP 750-R?

A: The substitute parts carry CE, CSA, and UL certifications. The original 3AP 750-R carries CE, CSA, and cULus certifications. Both certification sets meet international safety and regulatory requirements for fuse components.

Q: Will the substitute parts fit existing fuse holders designed for the 3AP 750-R?

A: Yes. All substitute parts conform to the 3AB/3AG package standard with dimensions of 1/4" x 1-1/4" (axial). Physical compatibility with standard fuse holders is maintained.

Q: Why is the 3AP 750-R classified as obsolete?

A: The 3AP 750-R is no longer manufactured by Bel Fuse Inc. The Littelfuse 318 series substitutes provide equivalent functionality with active product status and ongoing manufacturer support.