DS50-LK Terminal Block Connector Equivalent & Substitute Parts

Part Overview

The DS50-LK is a 2-position feed-through terminal block connector manufactured by Eaton - Bussmann Electrical Division, part of the Magnum® DS series. This component is designed for screw termination of conductors in the 8-20 AWG range, supporting IEC ratings of 41 A at 1000V and UL ratings of 50 A at 600V. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and component sourcing in legacy applications.

Substiute Parts

DS50-LK

Eaton - Bussmann Electrical DivisionIn Stock: 987DS50-LK Datasheet

Current PartRFQ

ATB6BK

Amphenol PCDIn Stock: 931ATB6BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS50-LK is determined by the following critical parameters:

• Mechanical Compatibility: 2 positions, 1 level, 8.0mm terminal width, feed-through configuration, and screw termination style
• Electrical Ratings: Current capacity (IEC 41 A minimum, UL 50 A minimum) and voltage withstand (IEC 1000V minimum, UL 600V minimum)
• Wire Gauge Compatibility: Support for 8-20 AWG conductor range (0.5-6mm²)
• Physical Properties: Black color, polyamide insulation material, UL94 V-0 flammability rating, and 12mm stripping length

The ATB6BK from Amphenol PCD meets these substitution criteria with equivalent mechanical dimensions, compatible electrical ratings, and overlapping wire gauge support (8-22 AWG). The substitute part maintains the same termination method, insulation material composition, and physical form factor required for direct replacement in legacy DS50-LK applications.

Parameter Comparison

Engineering Selection Recommendations

The ATB6BK terminal block connector from Amphenol PCD is a functionally equivalent substitute for the obsolete DS50-LK. Both components share identical mechanical form factors (2 positions, 8.0mm terminal width, feed-through configuration) and equivalent electrical performance under UL standards (50 A at 600V). The ATB6BK maintains compatibility with the 8-20 AWG wire gauge range specified for the DS50-LK, with extended support for 8-22 AWG conductors.

The primary consideration is the IEC voltage rating differential: the DS50-LK is rated at 1000V IEC while the ATB6BK is rated at 800V IEC. In applications where the full 1000V IEC rating is required, this voltage differential must be evaluated against system requirements. For applications operating within 800V IEC specifications, the ATB6BK provides direct substitution with the advantage of active product status and RoHS compliance certification.

Both components utilize identical insulation materials (Polyamide PA66, Nylon 6/6) with UL94 V-0 flammability ratings, ensuring equivalent safety performance in the intended application environment.

Frequently Asked Questions (FAQ)

Q: Can the ATB6BK directly replace the DS50-LK in all applications?

A: The ATB6BK is mechanically and electrically compatible for applications operating within 800V IEC specifications. If your system requires the full 1000V IEC rating of the original DS50-LK, the voltage differential must be evaluated against your specific application requirements before substitution.

Q: What is the significance of the wire gauge range difference (8-20 AWG vs. 8-22 AWG)?

A: The ATB6BK supports an extended wire gauge range of 8-22 AWG compared to the DS50-LK's 8-20 AWG specification. This extended range provides greater flexibility for conductor selection while maintaining full compatibility with the original 8-20 AWG requirement.

Q: Are there packaging differences between these components?

A: The DS50-LK packaging information is not specified in the available data. The ATB6BK is supplied in tray packaging. Verify packaging requirements for your procurement and assembly processes.

Q: What is the significance of the ATB6BK's RoHS compliance status?

A: The ATB6BK is RoHS compliant, meeting current environmental and regulatory standards for electronic component manufacturing. The DS50-LK's RoHS status is not specified in the available data.

Q: Are the stripping length requirements identical?

A: Yes, both the DS50-LK and ATB6BK require 12mm conductor stripping length, ensuring compatibility with existing assembly and termination procedures.

Q: What is the minimum wire gauge supported by each component?

A: The DS50-LK supports 8 AWG minimum (0.5mm² minimum). The ATB6BK supports 8 AWG minimum (1.5mm² minimum). Both components accommodate the same AWG range at the lower end, though the ATB6BK's minimum cross-sectional area is higher.