DM50-BU Terminal Block Connector Equivalent & Substitute Parts

Part Overview

The DM50-BU is a 2-position feed-through terminal block connector manufactured by Eaton - Bussmann Electrical Division, part of the Magnum® DM series. This component is designed for screw termination of conductors in the 8-20 AWG range with electrical ratings of 41 A (IEC) / 50 A (UL) and 500 V (IEC) / 300 V (UL). The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and system continuity in applications where this connector type is specified.

Substiute Parts

DM50-BU

Eaton - Bussmann Electrical DivisionIn Stock: 765DM50-BU Datasheet

Current PartRFQ

6106101

Curtis IndustriesIn Stock: 7226106101 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM50-BU is determined by the following critical parameters:

• Position and Level Configuration: Substitute parts must maintain 2 positions and 1 level to ensure mechanical and electrical compatibility with existing PCB layouts and connector housings.
• Terminal Width: The 8.0 mm terminal width is a fixed mechanical constraint that must be matched to ensure proper fit within existing assemblies.
• Feed-Through Type: The feed-through configuration is essential for applications requiring signal or power pass-through functionality.
• Wire Gauge Compatibility: Substitute parts must accommodate the 8-20 AWG (0.5-6 mm²) wire range or a compatible superset range.
• Electrical Ratings: Substitute parts must meet or exceed the IEC ratings (41 A / 500 V) and UL ratings (50 A / 300 V) to ensure safe operation in the intended application.
• Insulation Material and Flammability: Polyamide (PA66) with UL94 V-0 rating is required for compliance with safety standards.
• Termination Interface: While the main part uses screw termination, substitute parts with alternative termination styles (such as push-in or spring) are acceptable if they provide equivalent electrical and mechanical performance within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The Curtis Industries 6106101 terminal block connector is a functionally equivalent substitute for the obsolete DM50-BU based on the following engineering criteria:

Electrical Compatibility: Both components share identical IEC current ratings (41 A) and UL current ratings (50 A). The 6106101 provides higher voltage ratings (630 V IEC / 600 V UL) compared to the DM50-BU (500 V IEC / 300 V UL), ensuring safe operation in applications where the original part was specified.

Mechanical Compatibility: Both connectors maintain the same 2-position, 1-level configuration with 8.0 mm terminal width, ensuring compatibility with existing mechanical assemblies and PCB layouts.

Material and Safety Compliance: Both parts utilize Polyamide (PA66) insulation with UL94 V-0 flammability rating, meeting identical safety and material standards.

Wire Gauge Considerations: The 6106101 accommodates 8-22 AWG (2.5-6 mm²), which covers the primary operating range of the DM50-BU (8-20 AWG / 0.5-6 mm²). Applications using wire gauges smaller than 2.5 mm² (22-24 AWG) may require additional evaluation.

Termination Method Difference: The 6106101 uses push-in and spring termination, whereas the DM50-BU uses screw termination. This difference requires mechanical interface verification in the target application to ensure proper wire retention and electrical contact.

Product Availability: The 6106101 is currently active in production, providing long-term supply continuity compared to the obsolete DM50-BU.

Frequently Asked Questions (FAQ)

Q: Can the Curtis Industries 6106101 be used as a direct replacement for the DM50-BU?

A: The 6106101 is functionally equivalent in terms of electrical ratings, position configuration, and terminal width. However, the termination method differs (push-in/spring versus screw). Direct mechanical substitution requires verification that the application's wire termination interface is compatible with push-in/spring termination.

Q: What is the significance of the wire gauge range difference between the two parts?

A: The DM50-BU supports 8-20 AWG (0.5-6 mm²), while the 6106101 supports 8-22 AWG (2.5-6 mm²). The 6106101 extends the upper AWG range (smaller wire sizes) to 22 AWG but does not support wire gauges below 2.5 mm². Applications using wires smaller than 2.5 mm² must be evaluated separately.

Q: Are the voltage ratings of the 6106101 higher than required?

A: Yes. The 6106101 provides 630 V (IEC) and 600 V (UL) ratings, exceeding the DM50-BU specifications of 500 V (IEC) and 300 V (UL). This provides additional safety margin and is acceptable for applications where the original part was specified.

Q: What compliance certifications apply to both parts?

A: Both the DM50-BU and 6106101 meet UL94 V-0 flammability standards and use identical Polyamide (PA66) insulation materials. The 6106101 is RoHS non-compliant and REACH unaffected, which should be evaluated against application-specific compliance requirements.

Q: Does the different termination style affect electrical performance?

A: Both termination methods (screw and push-in/spring) are designed to provide equivalent electrical contact and current-carrying capacity at the specified ratings. The choice between them depends on the mechanical interface and assembly process of the target application.

Q: Is the 6106101 suitable for applications requiring the exact screw termination interface?

A: No. If the application specifically requires screw termination for mechanical or assembly reasons, the 6106101's push-in/spring termination may not be compatible. Alternative substitutes with screw termination should be evaluated.