Eaton Cooper Power Series 38 kV Bay-O-Net Fuse Link for Pad-Mounted Transformer

Product Specifications

Product Name: Eaton Cooper Power Series 38 kV Bay-O-Net Fuse Link

OEM Catalog Number: 4000380C06CB / 4000380C08CB / 4000380C10CB / 4000380C11CB / 4000380C12CB / 4000380C14CB

Maximum Rated System Voltage: 38.0 kV Class (Specifically rated for 24 kV to 38 kV high-voltage applications)

Fusing Curve Designation: Calibrated to standard full-size time-current characteristic curve parameters

Installation Mounting Profile: Sidewall-mounted or cover-mounted silver-plated Flapper valve assemblies

Core Materials: Integrated fuse link, heavy-duty fuse tube, and staked brass end plug

Available Amperage Series & Catalog Matrix

The Eaton Cooper Power series 38 kV high-voltage Bay-O-Net fuse link configuration is engineered across six distinct current ratings to meet comprehensive utility grid demand profiles:

• 10 A Rating Variant: Part Number 4000380C06CB — Optimized for low-load 24–38 kV distribution networks.
• 15 A Rating Variant: Part Number 4000380C08CB — Precision-drawn core engineered for mid-range transformer protection.
• 25 A Rating Variant: Part Number 4000380C10CB — Heavy-duty variant calibrated for standard sub-surface apparatus layouts.
• 30 A Rating Variant: Part Number 4000380C11CB — Extended performance core for specialized utility network installations.
• 40 A Rating Variant: Part Number 4000380C12CB — Engineered structural profile built specifically for high-stress renewable energy networks.
• 65 A Rating Variant: Part Number 4000380C14CB — Maximum capacity configuration delivering up to 1000 A single-phase interrupting capability.

Material & Structural Characteristics

• Integrated Cartridge Assembly: Advanced design combining the fuse link and cartridge into a single component to simplify field re-fusing and completely prevent installation errors.
• Silver-Plated Contact Interface: High-conductivity silver-plated flared contacts and end contacts engineered to achieve low electrical resistance and deliver absolute stability when inserted into silver-plated assemblies.
• Rugged Fuse Tube Body: Heavy-duty, oil-compatible structural material designed to facilitate smooth dielectric fluid circulation and withstand aggressive thermal cycles without structural degradation.
• Staked Brass End Plug: Factory-secured terminal hardware mechanically staked to completely prevent accidental removal or physical loosening under severe field conditions.

Product Functions

1. Overload & Low-Fault Clearing: Precision-calibrated to clear low-magnitude currents, secondary faults, line overloads, and high-impedance internal faults that fall below the operation threshold of upstream protective equipment.

2. Two-Fuse Coordinated Protection: Operates in perfect series synchronization when paired with a 38 kV rated ELSP current-limiting backup fuse, safely isolating minor overloads locally while leaving catastrophic short circuits to the backup component.

3. Apparatus Safety Isolation: Minimizes the duration of electrical arcing inside the transformer tank during an active insulation breakdown, preventing downstream fault escalation and protecting surrounding infrastructure.

Key Features

1. Renewable Energy Optimization: Specially engineered and certified to handle the rigorous overcurrent protection demands of modern solar, wind, and large-scale utility distribution applications.

2. Hotstick Operational Compatibility: Built to allow field technicians seamless removal and replacement using a standard hotstick from non-pressurized apparatus, eliminating the need for complex tools.

3. Dual Dielectric Compatibility: Formulated from premium non-aging materials that offer full operational compatibility with standard mineral oil and alternative bio-based Envirotemp FR3 fluids.

4. Permanent Part Stamping: Permanently marked with the exact factory catalog numbers and maximum voltage thresholds to ensure smooth inventory tracking and error-free warehouse deployment.

Technical Parameter Specifications

• Nominal System Voltage: 38.0 kV Maximum Single-Phase Rating
• Interrupting Capacity (10A-40A): 900 A Symmetrical RMS in Mineral Oil and Envirotemp FR3 Fluid
• Interrupting Capacity (65A): 1000 A Symmetrical RMS in Mineral Oil and Envirotemp FR3 Fluid
• Interruption Medium: Liquid-Submersed Expulsion Link
• Application Layout: Pad-Mounted Renewable Transformers, Wind Farm Substations, Solar Array Enclosures, Box-Type Sub-Surface Distribution Modules.
• Compliance Matrix: Manufactured in complete alignment with IEEE Std C57.92 and IEEE Std C57.109 distribution component loading and through-fault specifications.