DP45-LK Terminal Block Connector Equivalent & Substitute Parts

Part Overview

The DP45-LK is a 2-position feed-through terminal block connector manufactured by Eaton - Bussmann Electrical Division, part of the Magnum® DP series. This component is designed for screw termination of conductors in the 8-20 AWG range, supporting IEC ratings of 41 A at 500V and UL ratings of 45 A at 600V. The DP45-LK is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new designs requiring compatible components.

Substiute Parts

DP45-LK

Eaton - Bussmann Electrical DivisionIn Stock: 972DP45-LK Datasheet

Current PartRFQ

ATB6BK

Amphenol PCDIn Stock: 931ATB6BK Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DP45-LK is determined by the following critical parameters:

• Connector Type & Configuration: Feed-through terminal block with 2 positions and 1 level
• Terminal Geometry: 8.0mm terminal width for mechanical compatibility
• Termination Method: Screw termination for identical installation procedures
• Wire Gauge Compatibility: Support for 8-20 AWG (0.5-6mm²) conductor range
• Electrical Performance: Current and voltage ratings meeting or exceeding IEC 41 A / 500V and UL 45 A / 600V specifications
• Material & Compliance: Polyamide (PA66) insulation with RoHS compliance and MSL 1 rating

The ATB6BK from Amphenol PCD meets these substitution criteria with compatible mechanical and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ATB6BK serves as a direct functional equivalent to the DP45-LK for applications requiring 2-position feed-through terminal blocks with 8.0mm terminal width and screw termination. Both components share identical mechanical interfaces, material composition, and core electrical specifications.

The ATB6BK maintains active product status with current manufacturing availability, whereas the DP45-LK is obsolete. Both components are RoHS compliant with MSL 1 rating and identical stripping length specifications. The ATB6BK provides enhanced electrical performance with higher IEC voltage rating (800V vs. 500V) and increased UL current rating (50 A vs. 45 A), making it suitable for applications within the DP45-LK's original design envelope.

Wire gauge compatibility is maintained across the standard 8-20 AWG range specified for the DP45-LK, with the ATB6BK extending support to 22 AWG. The lower mm² range of the ATB6BK (1.5mm² vs. 0.5mm²) does not restrict compatibility for typical industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the ATB6BK directly replace the DP45-LK in existing installations?

A: Yes. Both components feature identical 2-position, 1-level configuration with 8.0mm terminal width and screw termination. Mechanical mounting and conductor connection procedures are identical. The ATB6BK's enhanced electrical ratings ensure compatibility with all applications designed for the DP45-LK.

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

A: The DP45-LK supports 8-20 AWG; the ATB6BK supports 8-22 AWG. This difference does not affect substitution for the DP45-LK, as all conductors within the 8-20 AWG range are accommodated by both components. The ATB6BK provides extended capability for smaller gauge conductors.

Q: Are there differences in the minimum wire gauge (mm²) specification?

A: The DP45-LK supports 0.5-6mm²; the ATB6BK supports 1.5-6mm². For applications using conductors below 1.5mm², the DP45-LK specifications must be verified. For standard industrial applications within the 1.5-6mm² range, both components are equivalent.

Q: What packaging differences exist between these components?

A: The DP45-LK packaging is not specified in available data. The ATB6BK is supplied in tray packaging. Packaging format does not affect functional compatibility or electrical performance.

Q: Are both components RoHS compliant?

A: Yes. Both the DP45-LK and ATB6BK are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating, suitable for standard storage and handling conditions.

Q: How do the voltage ratings compare?

A: The DP45-LK is rated 500V (IEC) and 600V (UL). The ATB6BK is rated 800V (IEC) and 600V (UL). The ATB6BK's higher IEC voltage rating provides additional margin for applications operating at the DP45-LK's specified voltage levels.