NC3-BK Equivalent & Substitute Parts Reference

Part Overview

The NC3-BK is a 3-circuit barrier block connector from Eaton's Magnum® NC3 series, designed for high-current electrical distribution applications. This component features a 1.060" (26.92mm) pitch configuration with screw-type terminations and supports wire gauges from 2/0 to 14 AWG at 175A and 600V ratings. The NC3-BK is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component replacement in existing installations.

Substiute Parts

NC3-BK

Eaton - Bussmann Electrical DivisionIn Stock: 1084NC3-BK Datasheet

Current PartRFQ

NC3-WH

Eaton - Bussmann Electrical DivisionIn Stock: 1119NC3-WH Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The NC3-WH qualifies as a direct substitute for the NC3-BK based on the following critical parameters that determine functional equivalence:

• Identical electrical specifications: 175A current rating, 600V voltage rating, and 2/0-14 AWG wire gauge capacity
• Matching mechanical configuration: 3 circuits, 1.060" (26.92mm) pitch, 6 wire entries, 2-row arrangement
• Same termination method: Screw-type top termination with closed bottom termination
• Identical barrier design: 3-wall (tri) barrier configuration
• Same mounting compatibility: Channel, DIN Rail, and Track mounting options
• Equivalent thermal rating: 105°C operating temperature
• Same series platform: Both components belong to the Magnum® NC3 series

The primary difference between these components is color (black versus white) and product status (obsolete versus active), neither of which affects electrical or mechanical performance in the application.

Parameter Comparison

Engineering Selection Recommendations

The NC3-WH is the appropriate substitute for the NC3-BK in all applications where the original component is no longer available. The NC3-WH maintains full electrical and mechanical compatibility while offering the advantage of active product status and RoHS compliance certification. Selection of the NC3-WH eliminates obsolescence risk and ensures access to current manufacturing support and documentation from Eaton - Bussmann Electrical Division.

Frequently Asked Questions (FAQ)

Q: Can NC3-WH be used as a direct replacement for NC3-BK in existing installations?

A: Yes. The NC3-WH provides complete functional equivalence across all electrical parameters (175A, 600V, 2/0-14 AWG), mechanical configuration (3 circuits, 1.060" pitch), and mounting compatibility (Channel, DIN Rail, Track). The components are interchangeable from an engineering standpoint.

Q: What is the difference between NC3-BK and NC3-WH?

A: The primary differences are color (black versus white) and product status (obsolete versus active). Both components share identical electrical ratings, mechanical specifications, and termination methods. The NC3-WH also carries RoHS compliance certification.

Q: Why is the NC3-BK classified as obsolete?

A: Obsolescence status indicates that the NC3-BK is no longer in active production. The NC3-WH, as an active product within the same Magnum® NC3 series, serves as the current manufacturing equivalent.

Q: Are there any compatibility concerns when substituting NC3-WH for NC3-BK?

A: No compatibility concerns exist. Both components conform to the same electrical specifications, mechanical dimensions, and mounting requirements. Installation procedures and wire termination methods are identical.

Q: Does the color difference affect electrical performance?

A: No. Color is a cosmetic attribute and does not influence electrical performance, current capacity, voltage rating, or thermal characteristics.

Q: What is the significance of RoHS compliance on the NC3-WH?

A: RoHS compliance indicates that the NC3-WH meets restrictions on hazardous substances in electrical and electronic equipment. This certification is relevant for applications subject to environmental or regulatory compliance requirements.