DM50-LK Terminal Block Connector Equivalent & Substitute Parts

Part Overview

The DM50-LK 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 applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	DM50-LK
Manufacturer	Eaton - Bussmann Electrical Division
Category	Terminal Blocks
Type	Feed Through
Number of Positions	2
Number of Levels	1
Terminal Width	8.0 mm
Termination Style	Screw
Wire Gauge Range (AWG)	8-20 AWG
Wire Gauge Range (mm²)	0.5-6 mm²
Current Rating (IEC)	41 A
Voltage Rating (IEC)	500 V
Current Rating (UL)	50 A
Voltage Rating (UL)	300 V
Insulation Material	Polyamide (PA66), Nylon 6/6
Flammability Rating	UL94 V-0
Color	Black
Product Status	Obsolete

Substitute Part Grouping Explanation

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

Number of Positions & Levels: Must be 2 positions, 1 level
Terminal Width: Must be 8.0 mm
Wire Gauge Compatibility: Must accommodate 8-20 AWG (0.5-6 mm²) or a compatible superset range
Electrical Ratings: Must meet or exceed IEC 41 A / 500 V and UL 50 A / 300 V
Insulation Material & Flammability: Must be Polyamide (PA66) with UL94 V-0 rating
Feed-Through Configuration: Must maintain feed-through topology

The Curtis Industries 6106101 qualifies as a substitute based on matching position count, level configuration, terminal width, insulation material, and flammability rating. While termination style differs (Push In/Spring vs. Screw) and wire gauge range extends to 8-22 AWG, the electrical ratings exceed the DM50-LK requirements, ensuring functional compatibility in equivalent applications.

Parameter Comparison

Parameter	DM50-LK (Eaton)	6106101 (Curtis Industries)
Number of Positions	2	2
Number of Levels	1	1
Terminal Width	8.0 mm	8.0 mm
Type	Feed Through	Feed Through
Wire Gauge Range (AWG)	8-20 AWG	8-22 AWG
Wire Gauge Range (mm²)	0.5-6 mm²	2.5-6 mm²
Current Rating (IEC)	41 A	41 A
Voltage Rating (IEC)	500 V	630 V
Current Rating (UL)	50 A	50 A
Voltage Rating (UL)	300 V	600 V
Insulation Material	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6
Flammability Rating	UL94 V-0	UL94 V-0
Termination Style	Screw	Push In, Spring
Product Status	Obsolete	Active

Engineering Selection Recommendations

The Curtis Industries 6106101 is an active product suitable for applications requiring DM50-LK functionality. Key considerations:

Electrical Compatibility: The 6106101 exceeds the DM50-LK voltage ratings (630 V IEC vs. 500 V IEC; 600 V UL vs. 300 V UL) while maintaining equivalent current ratings. This provides margin for applications operating at the DM50-LK specification limits.

Termination Method Difference: The DM50-LK uses screw termination; the 6106101 uses push-in/spring termination. This represents a functional change requiring verification that the receiving system accommodates the alternative termination interface.

Wire Gauge Range: The 6106101 accepts 8-22 AWG (2.5-6 mm²), compared to the DM50-LK range of 8-20 AWG (0.5-6 mm²). The 6106101 does not accommodate gauges smaller than 2.5 mm² (approximately 14 AWG equivalent). Applications using 0.5-2.0 mm² conductors require confirmation of compatibility.

Compliance & Availability: The 6106101 is RoHS non-compliant and REACH unaffected. The DM50-LK status does not specify RoHS compliance. For systems with RoHS requirements, this distinction must be evaluated against procurement specifications.

Product Status: The 6106101 is active with documented inventory availability, ensuring supply continuity for replacement and new installations.

Frequently Asked Questions (FAQ)

Q: Can the Curtis Industries 6106101 directly replace the DM50-LK in existing installations?

A: Functional replacement is possible if the receiving system accommodates push-in/spring termination instead of screw termination. The electrical ratings and physical dimensions are compatible. Wire gauge compatibility must be verified for applications using conductors smaller than 2.5 mm².

Q: What is the primary difference between these two terminal blocks?

A: The primary difference is termination style. The DM50-LK uses screw termination for conductor connection; the 6106101 uses push-in/spring termination. Both maintain identical position count, level configuration, terminal width, and insulation properties.

Q: Are the electrical ratings equivalent?

A: The 6106101 exceeds the DM50-LK ratings. Both support 41 A (IEC) / 50 A (UL) current. The 6106101 provides higher voltage ratings: 630 V (IEC) vs. 500 V (IEC) and 600 V (UL) vs. 300 V (UL). This represents a performance advantage for equivalent applications.

Q: Does wire gauge compatibility affect substitution?

A: The 6106101 wire gauge range (8-22 AWG, 2.5-6 mm²) does not fully overlap the DM50-LK range (8-20 AWG, 0.5-6 mm²). Applications using conductors between 0.5-2.0 mm² cannot use the 6106101. Verify conductor specifications before substitution.

Q: What compliance certifications apply to each part?

A: Both parts feature UL94 V-0 flammability rating and Polyamide (PA66) insulation. The 6106101 is RoHS non-compliant; the DM50-LK compliance status is not specified. For regulated applications, confirm RoHS requirements against procurement standards.

Q: Is the 6106101 currently available?

A: Yes. The 6106101 is an active product with documented new original inventory. The DM50-LK is obsolete, making the 6106101 the recommended alternative for ongoing supply requirements.

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