BNH40W Terminal Block Equivalent & Substitute Parts

Part Overview

The BNH40W is a 2-position feed-through terminal block connector manufactured by IDEC, designed for wire gauges 8-16 AWG with a rated current of 40 A at 600V UL. This component is classified as obsolete, necessitating identification of active equivalent alternatives for continued system design and maintenance applications. The BNH40W utilizes screw termination with polyphenylene ether insulation and is available in black coloring.

Substiute Parts

BNH40W

IDECIn Stock: 996BNH40W Datasheet

Current PartRFQ

BNH50W

IDECIn Stock: 1666BNH50W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BNH40W is determined by the following critical parameters that must remain compatible:

Mandatory Compatibility Parameters:

• Manufacturer: IDEC (same product family)
• Category: Terminal Blocks
• Type: Feed Through
• Number of Positions: 2
• Number of Levels: 1
• Termination Style: Screw
• Voltage Rating (UL): 600V
• Insulation Material: Polyphenylene Ether (PPE)
• Color: Black

Allowable Variation Parameters:

• Wire Gauge Range: The substitute may accept a broader range (6-16 AWG vs. 8-16 AWG)
• Current Rating: The substitute may have a higher rating (50 A vs. 40 A)
• Terminal Width: Minor dimensional variation is acceptable (15.5mm vs. 14.0mm)
• Product Status: Active status is required for substitution

The BNH50W meets all mandatory compatibility criteria while providing enhanced electrical performance through increased current capacity and expanded wire gauge acceptance.

Parameter Comparison

Engineering Selection Recommendations

The BNH50W is the direct substitute for the obsolete BNH40W terminal block. Selection of the BNH50W is based on the following engineering criteria:

Product Status Alignment: The BNH50W maintains active product status, ensuring continued availability and manufacturer support, whereas the BNH40W is obsolete and subject to supply discontinuation.

Regulatory Compliance: The BNH50W carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for component procurement in industrial applications.

Electrical Performance: The BNH50W provides equivalent voltage rating (600V UL) with enhanced current capacity (50 A vs. 40 A), delivering superior performance margins for existing circuit designs.

Mechanical Compatibility: Both components share identical feed-through configuration, 2-position architecture, screw termination, and PPE insulation material, ensuring direct form-fit-function replacement in existing assemblies.

Wire Gauge Flexibility: The BNH50W accepts wire gauges from 6-16 AWG, encompassing the original 8-16 AWG specification while providing expanded compatibility for future design iterations.

Frequently Asked Questions (FAQ)

Q: Can the BNH50W directly replace the BNH40W in existing designs?

A: Yes. The BNH50W is a direct substitute for the BNH40W. Both components share identical feed-through type, 2-position configuration, screw termination, 600V voltage rating, and PPE insulation material. The BNH50W provides enhanced current capacity (50 A vs. 40 A) and expanded wire gauge acceptance (6-16 AWG vs. 8-16 AWG).

Q: What are the key differences between BNH40W and BNH50W?

A: The primary differences are: (1) Product Status—BNH40W is obsolete while BNH50W is active; (2) Current Rating—BNH50W rated at 50 A versus 40 A; (3) Wire Gauge Range—BNH50W accepts 6-16 AWG versus 8-16 AWG; (4) Terminal Width—BNH50W measures 15.5mm versus 14.0mm; (5) Regulatory Compliance—BNH50W is ROHS3 compliant and REACH unaffected.

Q: Are there any mechanical compatibility concerns when substituting BNH50W for BNH40W?

A: No mechanical compatibility issues exist. Both components are 2-position, single-level feed-through terminal blocks with screw termination. The terminal width difference (15.5mm vs. 14.0mm) is a minor dimensional variation that does not affect mounting or electrical performance in standard applications.

Q: Does the BNH50W support the same wire gauge range as the BNH40W?

A: The BNH50W supports a broader wire gauge range. The BNH40W accepts 8-16 AWG, while the BNH50W accepts 6-16 AWG. This expanded range provides additional flexibility for wire selection without compromising compatibility with the original 8-16 AWG specification.

Q: What is the significance of the BNH50W being ROHS3 compliant?

A: ROHS3 compliance indicates that the BNH50W meets current European Union Restriction of Hazardous Substances regulations, restricting the use of specific hazardous materials. This certification is required for components used in many industrial and commercial applications and ensures compliance with modern procurement standards.

Q: Can the higher current rating of BNH50W (50 A vs. 40 A) affect circuit operation?

A: No. The higher current rating of the BNH50W (50 A) provides an increased safety margin compared to the BNH40W (40 A). The substitute component can safely handle the original design current of 40 A with additional capacity reserve, improving system reliability without altering circuit behavior.

Q: Is the BNH50W available in the same packaging as the BNH40W?

A: The BNH50W is supplied in bulk packaging. Packaging specifications should be confirmed with the supplier to ensure compatibility with assembly and procurement workflows.