SCHURTER 7043.6220 Ceramic Fuse Cartridge - Equivalent & Substitute Parts

Part Overview

The SCHURTER 7043.6220 is a 16A ceramic fuse cartridge rated for 220V AC and 125V DC operation with slow-blow response characteristics. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing system maintenance and new designs. The 3AB/3AG form factor (1/4" x 1-1/4") requires a compatible fuse holder for installation. Locating active-status alternatives ensures supply chain continuity and design flexibility.

Substiute Parts

7043.6220

SCHURTER Inc.In Stock: 8857043.6220 Datasheet

Current PartRFQ

0505016.MXP

Littelfuse Inc.In Stock: 22300505016.MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for ceramic fuse cartridges is determined by the following criteria:

Form Factor Compatibility: The substitute must maintain the 3AB/3AG package specification (1/4" x 1-1/4" dimensions) to ensure mechanical fit within existing fuse holders.

Current Rating Match: The substitute must provide the same 16A current rating to maintain circuit protection at the design specification.

Voltage Rating Consideration: The substitute voltage ratings must equal or exceed the application requirements. The SCHURTER 7043.6220 operates at 220V AC and 125V DC. The Littelfuse 0505016.MXP substitute provides 500V AC and 500V DC ratings, which exceed these requirements and are therefore acceptable for this application.

Fuse Type: Both the main part and substitute are ceramic cartridge fuses, ensuring consistent arc-quenching and thermal characteristics.

Compliance Status: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0505016.MXP serves as a direct functional substitute for the obsolete SCHURTER 7043.6220 based on the following criteria:

Mechanical Compatibility: Both parts share identical 3AB/3AG form factors and physical dimensions, ensuring installation in existing fuse holder assemblies without modification.

Electrical Equivalence: The 16A current rating is matched across both parts. The Littelfuse substitute provides higher voltage ratings (500V AC/DC versus 220V AC/125V DC), which is acceptable for applications operating at or below the original specifications.

Active Manufacturing Status: The Littelfuse 0505016.MXP is classified as active product status, ensuring long-term availability and supply chain reliability compared to the obsolete SCHURTER part.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and safety standards.

Approval Certifications: The Littelfuse substitute carries CE and cULus certifications, providing additional third-party validation for safety-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0505016.MXP be used as a direct replacement for the SCHURTER 7043.6220?

A: Yes. Both parts share the same 16A current rating, 3AB/3AG form factor, and ceramic cartridge construction. The Littelfuse substitute's higher voltage ratings (500V AC/DC) are compatible with applications designed for the original 220V AC/125V DC specification.

Q: What is the significance of the different voltage ratings between the two parts?

A: The substitute's higher voltage rating indicates greater electrical stress capability. In applications operating at or below 220V AC and 125V DC, the higher-rated substitute provides equivalent or superior performance without circuit modification.

Q: Are there differences in response time between these fuse cartridges?

A: Yes. The SCHURTER 7043.6220 exhibits slow-blow response, while the Littelfuse 0505016.MXP exhibits fast-blow response. This difference affects nuisance trip behavior during inrush current events. Application-specific requirements must determine if this characteristic change is acceptable.

Q: Do both parts fit the same fuse holder?

A: Yes. Both parts conform to the 3AB/3AG specification with 1/4" x 1-1/4" dimensions, ensuring mechanical compatibility with standard fuse holders designed for this form factor.

Q: What certifications does the substitute carry?

A: The Littelfuse 0505016.MXP carries CE and cULus certifications, providing compliance validation for European and North American markets respectively.

Q: Is the Littelfuse substitute RoHS compliant?

A: Yes. The Littelfuse 0505016.MXP is ROHS3 compliant and REACH unaffected, meeting current environmental regulations.