Equivalent & Substitute Parts for BK/S-8201-1

Part Overview

The BK/S-8201-1 is a cartridge fuse block designed for chassis mount applications in 600V electrical systems. This single-circuit fuseholder accommodates 0.25" diameter by 1.26" length cartridge fuses with a 30 A current rating. The component is classified as Active product status and remains in production by Eaton - Electronics Division. Substitute parts are identified when original inventory becomes unavailable, when alternative compliance certifications are required, or when application parameters permit operation at different voltage or current ratings within the same mechanical form factor.

Substiute Parts

BK/S-8201-1

Eaton - Electronics DivisionIn Stock: 1021BK/S-8201-1 Datasheet

Current PartRFQ

BK/S-8201-1-R

Eaton - Electronics DivisionIn Stock: 3009BK/S-8201-1-R Datasheet

DirectRFQ

BK2-S-4201-1-R

Eaton - Electronics DivisionIn Stock: 2806BK2-S-4201-1-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/S-8201-1 are classified into two categories based on substitution compatibility:

Direct Substitute (Electrical and Mechanical Equivalence): The BK/S-8201-1-R maintains identical electrical specifications (600V, 30 A), mechanical form factor (0.25" x 1.26" cartridge), mounting configuration (chassis mount), and termination style (quick connect). The primary difference is contact finish (tin versus tin-lead) and RoHS compliance status (ROHS3 Compliant versus non-compliant). This part is a direct functional equivalent suitable for applications where RoHS3 compliance is required or preferred.

Similar Substitute (Parameter Variance): The BK2-S-4201-1-R operates at reduced voltage (250V) and current (25A) ratings with different mounting (through hole) and termination (PC pin). This part shares the same fuse size (0.25" x 1.26") and cartridge type but is classified as similar rather than direct due to electrical parameter differences. Selection of this part requires confirmation that the application voltage and current requirements do not exceed 250V and 25A respectively.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (BK/S-8201-1-R): Select this part when the original BK/S-8201-1 is unavailable and the application requires ROHS3 compliance certification. Electrical and mechanical parameters are identical, ensuring drop-in compatibility. The contact finish change from tin-lead to tin does not affect functional performance in this application category. Inventory availability is significantly higher (2951 units versus 927 units).

For Similar Substitution (BK2-S-4201-1-R): This part is suitable only when the application circuit operates at or below 250V and 25A. The through-hole mounting configuration requires PCB layout modification compared to the chassis mount design of the main part. The PC pin termination differs from quick connect, necessitating connector redesign. This substitution is valid only when mechanical and electrical constraints of the application permit these parameter reductions.

Compliance Considerations: The BK/S-8201-1-R provides ROHS3 compliance and REACH unaffected status, making it the preferred choice for applications subject to environmental regulations. The BK2-S-4201-1-R also provides RoHS compliance and REACH unaffected status. The original BK/S-8201-1 remains suitable for applications without RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/S-8201-1-R be used as a direct replacement for BK/S-8201-1? A: Yes. Both parts maintain identical voltage (600V), current (30A), fuse size (0.25" x 1.26"), mounting type (chassis mount), and termination style (quick connect). The primary differences are contact finish and RoHS compliance status, which do not affect electrical or mechanical compatibility.

Q: What are the limitations of using BK2-S-4201-1-R as a substitute? A: The BK2-S-4201-1-R operates at reduced voltage (250V maximum) and current (25A maximum) ratings. It uses through-hole mounting instead of chassis mount and PC pin termination instead of quick connect. This part is suitable only for applications that do not exceed these electrical parameters and can accommodate the different mounting and termination configuration.

Q: Does the contact finish change from tin-lead to tin affect performance? A: No. For cartridge fuse block applications, the contact finish change from tin-lead to tin does not affect electrical performance, current-carrying capacity, or reliability. Both finishes provide adequate conductivity and corrosion resistance for this component category.

Q: Are all three parts compatible with 3AG cartridge fuses? A: Yes. All three parts are designed for use with 3AG, 1/4" x 1-1/4" (SFE-20) cartridge fuses. The 0.25" diameter by 1.26" length fuse size is standardized across all three parts.

Q: What is the significance of RoHS compliance for this component? A: RoHS compliance restricts the use of hazardous substances in electrical equipment. The BK/S-8201-1-R (ROHS3 Compliant) and BK2-S-4201-1-R (RoHS Compliant) are suitable for applications subject to environmental regulations. The original BK/S-8201-1 (RoHS non-compliant) remains suitable for applications without such requirements.

Q: Can mounting type be changed from chassis mount to through-hole? A: Changing from chassis mount to through-hole requires PCB layout modification and mechanical redesign of the mounting interface. This is not a simple substitution but rather a design change that must be evaluated within the context of the complete assembly.