DM30-BU Terminal Block Connector Equivalent & Substitute Parts

Part Overview

The DM30-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 10-22 AWG range with electrical ratings of 32 A (IEC) / 30 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.

Substiute Parts

DM30-BU

Eaton - Bussmann Electrical DivisionIn Stock: 776DM30-BU Datasheet

Current PartRFQ

9203060000

WeidmüllerIn Stock: 9289203060000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM30-BU is determined by strict equivalence across the following critical parameters:

• Electrical Performance: Current rating (IEC: 32 A minimum; UL: 30 A minimum) and voltage rating (IEC: 500 V minimum; UL: 300 V minimum)
• Physical Configuration: 2-position, 1-level feed-through terminal block with 6.1 mm terminal width
• Termination Method: Screw termination
• Conductor Compatibility: Wire gauge range 10-22 AWG (0.5-4 mm² minimum)
• Material & Safety: Polyamide or equivalent thermoplastic insulation with UL94 V-0 flammability rating
• Color Coding: Blue housing for visual identification

The substitute part 9203060000 (Weidmüller W series) meets all critical substitution criteria. It maintains identical position count, terminal width, termination style, and wire gauge compatibility. Electrical ratings meet or exceed the original specification. Material composition and flammability certification ensure functional equivalence in standard industrial applications.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 9203060000 terminal block is a direct functional substitute for the obsolete DM30-BU. Selection is supported by the following engineering factors:

Electrical Compliance: The substitute meets all IEC and UL electrical requirements specified for the original part. UL voltage rating of 600 V exceeds the original 300 V specification, providing additional safety margin in applications operating at or below the original voltage rating.

Physical & Mechanical Compatibility: Identical position count, terminal width, and screw termination method ensure mechanical fit and installation compatibility in existing assemblies. Wire gauge acceptance range (10-22 AWG) is identical to the original specification.

Material & Safety Certification: Both parts employ thermoplastic insulation materials with UL94 V-0 flammability rating, meeting identical fire safety standards. The substitute's polyamide-based insulation (Wemid) provides equivalent performance to the original PA66 material.

Product Availability: The substitute is currently in active production status with confirmed inventory availability (818 pcs), ensuring supply continuity for replacement and new assembly applications.

Regulatory Compliance: Both parts carry identical ECCN (EAR99) and HTSUS (8536.69.8000) classifications. The substitute is RoHS Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 9203060000 be used as a direct replacement for the DM30-BU in existing installations?

A: Yes. The substitute maintains identical electrical ratings (32 A IEC / 30 A UL; 500 V IEC / 300 V UL), physical configuration (2-position, 6.1 mm terminal width), and termination method (screw). Installation procedures and conductor preparation remain unchanged.

Q: What is the significance of the higher UL voltage rating (600 V) on the substitute part?

A: The Weidmüller substitute's 600 V UL rating exceeds the original 300 V specification. This provides additional electrical safety margin and does not restrict its use in applications designed for the original 300 V rating. The substitute is fully compatible with systems operating at or below 300 V.

Q: Are there differences in wire gauge acceptance between the two parts?

A: Both parts accept 10-22 AWG conductors. The Weidmüller substitute accepts wire up to 6 mm² (compared to 4 mm² for the original), providing expanded compatibility with larger conductor sizes while maintaining full compatibility with the original 0.5-4 mm² range.

Q: What is the difference in stripping length between the DM30-BU (7 mm) and the substitute (15 mm)?

A: Stripping length refers to the length of insulation removed from the conductor before termination. The substitute's 15 mm specification accommodates a wider range of installation practices. For applications originally designed for 7 mm stripping, the 15 mm specification does not create incompatibility; it simply allows additional conductor preparation flexibility.

Q: Are both parts certified to the same flammability standards?

A: Yes. Both the DM30-BU and Weidmüller 9203060000 carry UL94 V-0 flammability certification, meeting identical fire safety requirements for terminal block insulation materials.

Q: What is the packaging difference between the two parts?

A: The original DM30-BU was supplied in standard packaging (not specified). The Weidmüller substitute is supplied in bulk packaging. For applications requiring specific packaging formats, consult with the supplier regarding available packaging options.

Q: Is the Weidmüller part RoHS compliant?

A: Yes. The Weidmüller 9203060000 is RoHS Compliant and REACH Unaffected, meeting current environmental regulations. The original DM30-BU's RoHS status was not specified in the available documentation.