DM30-LK Terminal Block Equivalent & Substitute Parts

Part Overview

The DM30-LK is a 2-position feed-through terminal block connector manufactured by Eaton - Bussmann Electrical Division from the Magnum® DM series. This component is designed for screw termination of conductors in the 10-22 AWG range and operates at IEC ratings of 32 A and 500 V. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this connector type is required.

Key Parameters

Parameter	Value
Number of Positions	2
Number of Levels	1
Type	Feed Through
Termination Style	Screw
Wire Gauge Range (AWG)	10-22 AWG
Wire Gauge Range (mm²)	0.5-4 mm²
Terminal Width	6.1 mm
Current Rating (IEC)	32 A
Voltage Rating (IEC)	500 V
Current Rating (UL)	30 A
Voltage Rating (UL)	300 V
Material - Insulation	Polyamide (PA66), Nylon 6/6
Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DM30-LK is based on electrical and mechanical compatibility within the following criteria:

Mandatory Matching Parameters:

Number of positions: 2
Number of levels: 1
Type: Feed Through
Termination style: Screw
Wire gauge range: 10-22 AWG minimum
Terminal width: 6.1 mm
Current rating (IEC): 32 A or greater
Voltage rating (IEC): 500 V or greater
Flammability rating: UL94 V-0

Acceptable Variations:

Insulation material composition (different thermoplastic formulations acceptable)
Color (functional parameter only)
Stripping length (installation consideration, not functional limitation)
Wire gauge range extension (0.5-6 mm² acceptable as superset of 0.5-4 mm²)
UL voltage rating may exceed 300 V

The Weidmüller 9203060000 meets all mandatory matching parameters and represents a direct functional equivalent for the obsolete DM30-LK.

Parameter Comparison

Parameter	DM30-LK (Eaton)	9203060000 (Weidmüller)	Compatibility
Number of Positions	2	2	Match
Number of Levels	1	1	Match
Type	Feed Through	Feed Through	Match
Termination Style	Screw	Screw	Match
Wire Gauge Range (AWG)	10-22 AWG	10-22 AWG	Match
Wire Gauge Range (mm²)	0.5-4 mm²	0.5-6 mm²	Compatible (superset)
Terminal Width	6.1 mm	6.1 mm	Match
Current Rating (IEC)	32 A	32 A	Match
Voltage Rating (IEC)	500 V	500 V	Match
Current Rating (UL)	30 A	30 A	Match
Voltage Rating (UL)	300 V	600 V	Compatible (exceeds requirement)
Flammability Rating	UL94 V-0	UL94 V-0	Match
RoHS Status	RoHS Compliant	RoHS Compliant	Match
MSL Rating	1 (Unlimited)	1 (Unlimited)	Match
Color	Black	Blue	Functional equivalence (cosmetic difference)
Stripping Length	7 mm	15 mm	Installation consideration

Engineering Selection Recommendations

The Weidmüller 9203060000 is a direct functional equivalent to the obsolete Eaton DM30-LK terminal block connector. Selection of this substitute is based on the following engineering factors:

Electrical Equivalence: Both components share identical IEC electrical ratings (32 A, 500 V) and UL current ratings (30 A). The Weidmüller part exceeds the UL voltage requirement at 600 V versus the DM30-LK specification of 300 V, providing additional safety margin.

Mechanical Compatibility: Both connectors feature identical 2-position, single-level feed-through architecture with 6.1 mm terminal width and screw termination. Wire gauge acceptance ranges are compatible, with the Weidmüller part accepting the full DM30-LK range plus extended capacity to 6 mm².

Regulatory Compliance: Both parts maintain UL94 V-0 flammability certification and RoHS compliance status. The Weidmüller component includes REACH unaffected designation, providing additional regulatory documentation.

Product Status: The DM30-LK is obsolete. The Weidmüller 9203060000 is active production, ensuring availability for replacement and new applications.

The primary difference is cosmetic (color) and installation-related (stripping length), neither of which affects functional performance in terminal block applications.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 9203060000 directly replace the DM30-LK in existing installations?

A: Yes. Both components share identical electrical ratings, mechanical dimensions, and termination methodology. The Weidmüller part meets or exceeds all functional requirements of the DM30-LK.

Q: Does the color difference (black vs. blue) affect functionality?

A: No. Color is a cosmetic parameter only and does not impact electrical or mechanical performance. Color coding is typically used for circuit identification and does not affect component operation.

Q: What is the significance of the different stripping lengths (7 mm vs. 15 mm)?

A: Stripping length affects wire preparation during installation. The Weidmüller part requires 15 mm of insulation removal compared to 7 mm for the DM30-LK. This is an installation procedure consideration and does not affect the electrical or mechanical compatibility of the connector.

Q: Are there any voltage or current limitations when substituting?

A: No. The Weidmüller 9203060000 meets or exceeds all electrical ratings. The UL voltage rating of 600 V on the substitute exceeds the DM30-LK requirement of 300 V, providing additional operational margin.

Q: Is the wire gauge range difference significant?

A: No. The Weidmüller part accepts 0.5-6 mm², which includes the full DM30-LK range of 0.5-4 mm². The extended range provides additional flexibility for future applications without compromising compatibility with existing wire sizes.

Q: What is the regulatory status of the substitute part?

A: The Weidmüller 9203060000 is RoHS compliant and REACH unaffected, matching or exceeding the compliance profile of the obsolete DM30-LK.

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

A: Yes. Both components share identical MSL ratings (1 - Unlimited) and UL94 V-0 flammability certification, indicating equivalent performance in standard industrial environments.

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