3AP 200-R Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The 3AP 200-R is a 200 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 component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The part maintains ROHS3 compliance and carries CE, CSA, and cULus approvals.

Substiute Parts

3AP 200-R

Bel Fuse Inc.In Stock: 7733AP 200-R Datasheet

Current PartRFQ

0318.200HXP

Littelfuse Inc.In Stock: 10510318.200HXP Datasheet

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0318.200MXP

Littelfuse Inc.In Stock: 8530318.200MXP Datasheet

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0318.200VXP

Littelfuse Inc.In Stock: 11860318.200VXP Datasheet

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BK/AGC-V-2/10

Eaton - Electronics DivisionIn Stock: 983BK/AGC-V-2/10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Current Rating: 200 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Through Hole (exact match required)

All substitute parts listed below meet these core electrical and mechanical parameters. Variations in secondary characteristics such as breaking capacity, melting I²t, DC cold resistance, and dimensional tolerances are within acceptable engineering ranges for this component category.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 318 Series (0318.200HXP, 0318.200MXP, 0318.200VXP): These parts are functionally equivalent to the 3AP 200-R across all critical electrical and mechanical parameters. All three variants maintain active product status, ROHS3 compliance, and carry CE, CSA, and UL certifications. The Littelfuse 318 series offers superior inventory availability and ongoing manufacturer support. Selection among the three variants (HXP, MXP, VXP) depends on application-specific requirements not defined by core substitution parameters.

Eaton BK/AGC-V-2/10: This part meets all core electrical and mechanical substitution criteria. However, it carries RoHS non-compliance status and lacks CE certification, limiting its applicability to legacy systems or applications where RoHS compliance is not mandated. CSA and UL certifications are maintained.

For new designs and systems requiring RoHS3 compliance and full regulatory certification, the Littelfuse 318 series substitutes are preferred. For legacy system maintenance where RoHS compliance is not required, the Eaton AGC series remains functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0318.200HXP, 0318.200MXP, and 0318.200VXP be used interchangeably with the 3AP 200-R?

A: Yes. All three Littelfuse variants are electrically and mechanically equivalent to the 3AP 200-R. They share identical current rating (200 mA), voltage rating (250 V AC), response time (Fast Blow), and package format (3AB, 3AG, 1/4" x 1-1/4" axial). Dimensional variations are within acceptable tolerances for through-hole mounting.

Q: What is the difference between the Littelfuse 0318.200HXP, 0318.200MXP, and 0318.200VXP variants?

A: The provided data does not specify functional differences between these three part numbers. All three share identical electrical specifications, dimensions, and certifications. Consult Littelfuse technical documentation for variant-specific application guidance.

Q: Is the Eaton BK/AGC-V-2/10 suitable as a direct replacement?

A: The Eaton BK/AGC-V-2/10 meets all core electrical and mechanical substitution parameters. However, it is RoHS non-compliant and lacks CE certification. Use this part only in applications where RoHS compliance is not required and CSA/UL certification is sufficient.

Q: Why does the 3AP 200-R have a higher breaking capacity (200A) than the substitute parts (35A)?

A: Breaking capacity is a secondary characteristic that does not affect substitution eligibility when core parameters (current, voltage, response time, package) are matched. The lower breaking capacity of substitute parts remains adequate for 200 mA circuit protection applications.

Q: Are dimensional tolerances between the 3AP 200-R and substitute parts critical for mounting?

A: Dimensional variations (0.272" to 0.275" diameter, 1.280" to 1.292" length) are within standard tolerances for 3AB/3AG through-hole cartridge fuses. All parts are mechanically compatible with standard fuse holders designed for this package format.