SCHURTER 7020.8570 Equivalent & Substitute Parts

Part Overview

The SCHURTER 7020.8570 is a 15A ceramic cartridge fuse rated for 500VAC and 250VDC operation. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs. The fuse is designed for fast-blow response and requires a compatible holder for installation. Due to its discontinued status, identifying functionally equivalent alternatives is essential for procurement and system continuity.

Substiute Parts

7020.8570

SCHURTER Inc.In Stock: 10687020.8570 Datasheet

Current PartRFQ

L50S015.T

Littelfuse Inc.In Stock: 1019L50S015.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 7020.8570 is determined by the following critical parameters:

• Current Rating: 15A (exact match required)
• Voltage Rating - AC: 500V (minimum requirement)
• Voltage Rating - DC: 250V (minimum requirement)
• Fuse Type: Cartridge configuration
• Response Time: Fast Blow characteristic
• Mounting Type: Requires Holder (cartridge-based installation)

The Littelfuse L50S015.T meets these substitution criteria. While the DC voltage rating is elevated to 450VDC (exceeding the 250VDC requirement), the AC voltage rating matches at 500VAC, and all other electrical and mechanical parameters align with the original specification. The cartridge form factor and fast-blow response time are preserved, ensuring functional compatibility in the intended application.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse L50S015.T is the qualified substitute for the SCHURTER 7020.8570 based on the following factors:

Electrical Compatibility: The L50S015.T maintains the 15A current rating and 500VAC voltage specification. The elevated DC voltage rating of 450VDC provides additional margin above the original 250VDC requirement, which is acceptable for substitution purposes.

Mechanical Compatibility: Both fuses employ cartridge-based construction requiring a holder for installation. Dimensional variations (0.563" Dia x 2.000" L versus 0.551" Dia x 1.969" L) are within typical tolerance ranges for cartridge fuse holders designed to accommodate standard IEC dimensions.

Product Status and Compliance: The L50S015.T is an active product with current manufacturing support. It carries CE, CSA, and UR approvals and meets ROHS3 compliance requirements, addressing regulatory and supply chain continuity concerns associated with the obsolete SCHURTER component.

Performance Characteristics: The L50S015.T provides enhanced breaking capacity (200kA AC, 20kA DC) compared to the original specification (100kA AC, 10kA DC), offering improved fault protection margins.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse L50S015.T directly replace the SCHURTER 7020.8570 in existing installations?

A: Yes, the L50S015.T is functionally equivalent for the specified electrical parameters. Both components are 15A fast-blow cartridge fuses rated for 500VAC operation. Verify that the existing fuse holder accommodates the slight dimensional variation (0.563" Dia x 2.000" L for the L50S015.T versus 0.551" Dia x 1.969" L for the original). Standard IEC cartridge fuse holders typically accept both dimensions.

Q: Why is the DC voltage rating higher on the substitute part?

A: The Littelfuse L50S015.T is rated for 450VDC, exceeding the original 250VDC specification. This represents a design enhancement and does not compromise compatibility. The substitute remains suitable for applications requiring 250VDC or lower DC operation.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching current rating (15A), AC voltage rating (500V minimum), fuse type (cartridge configuration), and response time (fast blow). The DC voltage rating, breaking capacity, and physical dimensions are secondary considerations provided they meet or exceed the original specification.

Q: Are there compliance differences between the original and substitute?

A: Yes. The SCHURTER 7020.8570 is RoHS non-compliant and obsolete. The Littelfuse L50S015.T is ROHS3 compliant and carries active CE, CSA, and UR certifications, making it suitable for modern regulatory environments and ensuring ongoing supply availability.

Q: How do the breaking capacities compare?

A: The L50S015.T provides 200kA AC and 20kA DC breaking capacity, compared to 100kA AC and 10kA DC for the original. This enhanced capability offers improved fault protection margins and is acceptable for substitution.