Littelfuse 0229003.MXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0229003.MXP is a 3 A, 250 V AC / 125 V DC slow-blow glass cartridge fuse in 2AG package format (5mm × 15mm). This component is designed for circuit protection in applications requiring slow-blow response characteristics and dual voltage rating capability. The part maintains active product status with full regulatory compliance across CE, CSA, PSE, and UL certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical package specifications, and thermal response characteristics.

Substiute Parts

0229003.MXP

Littelfuse Inc.In Stock: 17370229003.MXP Datasheet

Current PartRFQ

0229003.HXP

Littelfuse Inc.In Stock: 13080229003.HXP Datasheet

Parametric EquivalentRFQ

0229003.HXSP

Littelfuse Inc.In Stock: 11150229003.HXSP Datasheet

Parametric EquivalentRFQ

BK/C519-3-R

Eaton - Electronics DivisionIn Stock: 1459BK/C519-3-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0229003.MXP is determined by the following critical parameters:

• Current Rating: Must be 3 A
• Voltage Rating - AC: Must be 250 V minimum
• Package / Case: Must be 2AG, 5mm × 15mm
• Fuse Type: Must be Cartridge, Glass
• Response Time: Must be Slow Blow
• Mounting Type: Must be Requires Holder

The substitute parts are grouped into two categories:

Parametric Equivalents (0229003.HXP, 0229003.HXSP): Littelfuse parts with identical electrical and mechanical specifications, including 125 V DC rating, 77 melting I²t, and 0.0383 Ohms DC cold resistance.

Manufacturer Recommended Equivalent (BK/C519-3-R): Eaton Electronics Division part meeting core electrical and mechanical requirements with 250 V AC rating and 2AG package format. This part differs in DC voltage specification and melting I²t characteristics but maintains functional compatibility for AC-rated applications.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 0229003.HXP and 0229003.HXSP are direct parametric equivalents to the 0229003.MXP. All three parts share identical electrical ratings, thermal response characteristics, mechanical dimensions, and regulatory certifications. Selection among these three Littelfuse variants is based on inventory availability and supply chain considerations. All three maintain active product status with full CE, CSA, PSE, and UL compliance.

Eaton BK/C519-3-R is a manufacturer-recommended alternative for applications where AC voltage rating of 250 V is the primary requirement. This part meets the 2AG package specification and 3 A current rating. The BK/C519-3-R exhibits higher breaking capacity (100A versus 35A AC) and slightly different melting I²t (80.426 versus 77). DC voltage rating is not specified for the Eaton part; therefore, its use is restricted to AC-only circuit protection applications. The BK/C519-3-R holds CSA and UL certifications but does not list PSE or CE approval.

For applications requiring dual AC/DC voltage ratings and full international regulatory compliance, the Littelfuse parametric equivalents (0229003.HXP, 0229003.HXSP) are the appropriate selection. For AC-only applications where higher breaking capacity is beneficial, the Eaton BK/C519-3-R provides a viable alternative.

Frequently Asked Questions (FAQ)

Q: Can 0229003.HXP and 0229003.HXSP be used interchangeably with 0229003.MXP?

A: Yes. These three Littelfuse parts are parametric equivalents with identical current ratings (3 A), voltage ratings (250 V AC / 125 V DC), response time (slow blow), package format (2AG, 5mm × 15mm), and regulatory certifications. They are fully interchangeable from an electrical and mechanical standpoint.

Q: What is the key difference between the Littelfuse parts and the Eaton BK/C519-3-R?

A: The primary difference is DC voltage rating specification. The Littelfuse parts are rated for 125 V DC, while the Eaton part does not specify a DC rating. The Eaton part also has higher breaking capacity (100A versus 35A AC) and different melting I²t characteristics. Regulatory certifications differ: Littelfuse includes PSE and CE, while Eaton lists only CSA and UL.

Q: Can BK/C519-3-R replace 0229003.MXP in a dual AC/DC application?

A: No. The BK/C519-3-R does not specify a DC voltage rating. Use of this part is limited to AC-only circuit protection applications. For circuits requiring both AC and DC protection, use the Littelfuse parametric equivalents (0229003.HXP or 0229003.HXSP).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts (0229003.MXP, 0229003.HXP, 0229003.HXSP, and BK/C519-3-R) are ROHS3 compliant and REACH unaffected.

Q: What determines whether a fuse can substitute for the 0229003.MXP?

A: Substitution requires matching of the following parameters: 3 A current rating, 250 V AC voltage rating, 2AG package format (5mm × 15mm), glass cartridge type, slow-blow response time, and holder-mount configuration. Additional considerations include DC voltage rating specification and regulatory certification requirements for the intended application.

Q: Is the 2AG package format critical for substitution?

A: Yes. The 2AG package format (5mm × 15mm) is a mechanical requirement for compatibility with standard fuse holders. Substitutes must use identical package dimensions to ensure proper fit and electrical contact within the holder assembly.