F520STLED48-GY Equivalent & Substitute Parts

Part Overview

The F520STLED48-GY is a 2-position disconnect terminal block connector manufactured by Eaton - Bussmann Electrical Division from the Magnum® F520 series. This component is designed for applications requiring screw termination with integrated fuse and lever disconnect functionality, rated for 6.3 A at 300V (IEC/UL). The part is currently obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

F520STLED48-GY

Eaton - Bussmann Electrical DivisionIn Stock: 957F520STLED48-GY Datasheet

Current PartRFQ

41078.2

On Shore Technology Inc.In Stock: 109541078.2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F520STLED48-GY is determined by the following critical parameters that must align with the original component:

Mandatory Matching Parameters:

• Number of Positions: 2
• Number of Levels: 1
• Termination Style: Screw
• Disconnect Type: Fuse, Lever
• Fuse Type: 5mm x 20mm
• Terminal Width: 8.0mm
• Current Rating: 6.3 A (minimum)
• Voltage Rating: 300V (minimum, IEC/UL)
• Wire Gauge Compatibility: Must accommodate 12-24 AWG range or subset thereof
• Material - Insulation: Polyamide (PA66), Nylon 6/6

Allowable Variations:

• Wire gauge range may be narrower (e.g., 12-22 AWG is acceptable as a subset of 12-24 AWG)
• Voltage rating may exceed 300V (e.g., 400V IEC is acceptable)
• Color may differ
• Stripping length may vary within acceptable installation tolerances
• Product status may differ (active vs. obsolete)

The substitute part 41078.2 from On Shore Technology Inc. meets all mandatory matching criteria and represents a valid equivalent for the F520STLED48-GY.

Parameter Comparison

Engineering Selection Recommendations

The 41078.2 terminal block from On Shore Technology Inc. is a qualified substitute for the obsolete F520STLED48-GY. Selection is based on the following engineering criteria:

Functional Equivalence: Both components share identical electrical ratings (6.3 A, 300V UL), mechanical configuration (2-position, 1-level, 8.0mm terminal width), and disconnect mechanism (fuse and lever). The wire gauge range of 41078.2 (12-22 AWG) encompasses the most common applications within the original specification range.

Compliance Status: The 41078.2 is an active product with RoHS3 compliance and REACH unaffected status, ensuring ongoing availability and regulatory alignment. The original F520STLED48-GY carries UL94 V-0 flammability rating; material composition of 41078.2 is identical (PA66/Nylon 6/6), supporting equivalent performance.

Voltage Margin: The 41078.2 provides 400V IEC rating, exceeding the 300V requirement and offering additional design margin for applications operating at nominal voltage levels.

Installation Considerations: Stripping length differs by 1mm (10mm vs. 9mm). This minor variation is within acceptable installation tolerances for screw-terminated connections and does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 41078.2 directly replace the F520STLED48-GY in existing installations?

A: Yes. Both components are 2-position, 1-level disconnect terminal blocks with screw termination, 6.3 A current rating, and 5mm x 20mm fuse compatibility. Mechanical and electrical interfaces are equivalent. The 1mm difference in stripping length (9mm vs. 10mm) does not affect installation compatibility.

Q: What is the significance of the wire gauge range difference (12-24 AWG vs. 12-22 AWG)?

A: The 41078.2 supports 12-22 AWG, which covers the majority of industrial applications. The original F520STLED48-GY extends to 24 AWG (0.5mm²). If your application requires 24 AWG termination, verify that 41078.2 accommodates your specific wire size before selection.

Q: Does the color difference (Gray vs. Beige) affect electrical performance?

A: No. Color is a cosmetic attribute and does not impact electrical or mechanical function. Selection should be based on visual identification requirements within your system.

Q: Why does the 41078.2 have a higher IEC voltage rating (400V vs. 300V)?

A: Higher voltage ratings indicate greater electrical stress capability. The 400V IEC rating of 41078.2 provides additional safety margin and is fully compatible with 300V applications.

Q: Is the 41078.2 RoHS compliant?

A: Yes. The 41078.2 is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the MSL (Moisture Sensitivity Level) rating?

A: Both components carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard storage and handling practices apply without special environmental controls.