F520STLED12-GY Equivalent & Substitute Parts

Part Overview

The F520STLED12-GY is a 2-position disconnect terminal block connector manufactured by Eaton - Bussmann Electrical Division from the Magnum® F520 series. This component is rated for 6.3 A at 300V (both IEC and UL standards) and accommodates wire gauges from 12-24 AWG. The part features LED indicators, lever-operated fuse disconnect functionality, and gray polyamide insulation with UL94 V-0 flammability rating.

This part is classified as obsolete. Identifying equivalent substitute components ensures design continuity and maintains supply chain reliability for applications requiring 2-position disconnect terminal blocks with fuse and lever disconnect capabilities.

Substiute Parts

F520STLED12-GY

Eaton - Bussmann Electrical DivisionIn Stock: 863F520STLED12-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 F520STLED12-GY is determined by the following critical parameters that must remain constant or compatible:

Core Electrical Parameters (Non-Negotiable):

• Current rating: 6.3 A minimum (IEC and UL)
• Voltage rating: 300V minimum (both IEC and UL)
• Fuse type: 5mm x 20mm

Core Mechanical Parameters (Non-Negotiable):

• Number of positions: 2
• Number of levels: 1
• Disconnect type: Fuse and Lever operation
• Terminal width: 8.0 mm
• Termination style: Screw

Compatible Variation Parameters:

• Wire gauge range: Must accommodate 12-24 AWG minimum (12-22 AWG is acceptable as a subset)
• Wire gauge range (mm²): Must accommodate 0.5-4 mm² minimum
• Insulation material: Polyamide (PA66) / Nylon 6/6
• Color: May vary (functional equivalence)
• Stripping length: Minor variations acceptable (9-10 mm range)

The substitute part 41078.2 from On Shore Technology Inc. meets all core electrical and mechanical requirements and operates within compatible parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

The 41078.2 terminal block from On Shore Technology Inc. is a functional equivalent for the obsolete F520STLED12-GY. Selection should be based on the following factors:

Product Status Consideration: The F520STLED12-GY is obsolete, making the active-status 41078.2 the appropriate choice for new designs and ongoing supply requirements.

Electrical Compliance: Both components meet IEC and UL electrical standards at 6.3 A and 300V. The 41078.2 provides a higher IEC voltage rating (400V), which offers additional margin in applications operating at or near 300V.

Mechanical Compatibility: Core mechanical specifications are identical: 2-position, single-level disconnect with fuse and lever operation, 8.0 mm terminal width, and screw termination. Both use 5mm x 20mm fuses.

Wire Gauge Accommodation: The 41078.2 accommodates 12-22 AWG, which is a subset of the original 12-24 AWG range. Applications using 23-24 AWG wire require verification of compatibility or alternative sourcing.

Material and Environmental Ratings: Both components use identical insulation material (Polyamide PA66/Nylon 6/6) and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent environmental performance.

Compliance and Certifications: The 41078.2 is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Frequently Asked Questions (FAQ)

Q: Can the 41078.2 directly replace the F520STLED12-GY in existing applications?

A: Yes, provided the application does not require wire gauges larger than 22 AWG. The 41078.2 accommodates 12-22 AWG, which covers the majority of standard applications. If 23-24 AWG wire is required, alternative sourcing or design modification is necessary.

Q: What is the significance of the higher IEC voltage rating (400V) on the 41078.2?

A: The 41078.2 is rated for 400V IEC, compared to 300V on the F520STLED12-GY. This provides additional voltage margin and does not restrict use in 300V applications. Both components maintain identical 300V UL ratings.

Q: Are the physical dimensions and mounting footprints identical?

A: Core mechanical dimensions are identical: 2-position configuration, 8.0 mm terminal width, and screw termination. The stripping length differs slightly (9 mm vs. 10 mm), which is a minor variation within acceptable engineering tolerances.

Q: Does the 41078.2 include LED indicators like the original part?

A: The 41078.2 does not list LED features in its specification. If LED indication is a functional requirement, this must be evaluated separately or alternative components sourced.

Q: What is the difference in packaging between these components?

A: The F520STLED12-GY is listed with unspecified packaging, while the 41078.2 is supplied in bulk packaging. Packaging format should be confirmed with the supplier based on procurement requirements.

Q: Are both components suitable for the same environmental conditions?

A: Yes. Both components carry MSL 1 (Unlimited) moisture sensitivity ratings and use identical insulation materials (Polyamide PA66/Nylon 6/6), ensuring equivalent performance in standard industrial environments.

Q: What compliance certifications apply to the 41078.2?

A: The 41078.2 is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in EU and international markets.