Eaton 4NPL-3750 CDC Cable Limiter - IEEE C37.41
Part Number: 4NPL-3750
Quick Summary
The Eaton 4NPL-3750 CDC cable limiter protects feeders by limiting fault currents in industrial power networks. For engineers, unexpected faults cause downtime and equipment damage, so targeted protection is critical. IEEE Std C37.41 is supported, along with 480 V operation and a 3750 A rating with 200 kAIC interrupt capability, delivering reliable isolation under high fault currents. This device integrates with the Eaton Bussmann series and Network Protector family to simplify stocking and maintenance. By combining a cable limiter with proven protection performance, it reduces downtime, extends asset life, and lowers total cost of ownership while enhancing safety across critical power feeds.
Product Information
Extended Description
4NPL-3750 Eaton: Eaton Bussmann series, NETWORK PROTECTOR FUSE
Product Name
Eaton Bussmann series CDC cable limiter
Catalog Number
4NPL-3750
UPC
786685316345
Product Length/Depth
6.1 in
Product Height
4.75 in
Product Width
4.75 in
Product Weight
6 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
IEEE Std. C37.41
Amperage Rating
3750 A
Interrupt rating
200 kAIC
Voltage rating
480 V
Quantity
1
Special features
Cable limiter
Feature 1: Amperage Rating 3750 A and Interrupt Rating 200 kAIC. Business Impact: Provides strong fault-current limiting for large feeders, reducing conductor stress and minimizing arc-related damage. Application: Industrial motor feeders and robust power distribution panels where high fault currents are possible. Feature 2: Voltage Rating 480 V. Business Impact: Ensures compatibility with standard industrial distribution systems, enabling safer operation and fewer step-down solutions. Application: Plant-wide distribution in manufacturing facilities and data centers. Feature 3: Physical Footprint — 6.1 in length, 4.75 in width, 4.75 in height, 6 lb. Business Impact: Compact form factor eases installation in crowded panels and enclosures, lowering engineering time and retrofit cost. Application: Retrofit and new installations with limited space. Feature 4: Certifications — IEEE Std C37.41. Business Impact: Provides industry-aligned protection performance and regulatory confidence, simplifying procurement and compliance. Application: Facilities requiring documented protection standards. Feature 5: Category and Special Features — Cable limiter in the Bussmann series. Business Impact: Streamlined integration with existing protection ecosystems and easier replacement or expansion. Application: Network Protector and Bussmann series protection schemes. Feature 6: Warranty and Support — One-year warranty from installation or 18 months from shipment. Business Impact: Reduces maintenance risk and provides predictable service windows. Application: Procurement and service-level planning for industrial projects.
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FAQs
The 4NPL-3750 is designed for straightforward integration with the Eaton Bussmann protection ecosystem. Begin with proper clearance and mounting within a compatible enclosure, then connect to the feeder using standard lugs and wiring per the Eaton specification sheet. Ensure the device is rated for 480 V systems and verify wiring matches the catalog number 4NPL-3750. Verification steps include torque checks, insulation verification, and confirmatory voltage tests prior to energization.
The 4NPL-3750 features an amperage rating of 3750 A, an interrupt rating of 200 kAIC, and a voltage rating of 480 V. These ratings enable robust protection for large feeders against high-energy faults, supporting rapid isolation of fault currents and minimizing damage to cables and equipment in demanding industrial environments.
Yes. The 4NPL-3750 is purpose-built for 480 V systems, handling high fault currents and delivering reliable protection for critical feeders in data centers and manufacturing lines. Its 3750 A capacity and IEEE C37.41 compatibility help ensure consistent performance under fault conditions while aligning with industry best practices for network protection.
The 4NPL-3750 complies with IEEE Std C37.41, the standard for current-limiting protection devices. This certification indicates credible performance in fault-current limitation, facilitating regulatory compliance, safer installations, and easier specification in projects requiring proven protection technology for high-energy systems.
The device carries a one-year warranty from installation or an 18-month period from shipment, whichever occurs first. This warranty reduces maintenance risk and supports predictable budgeting. By minimizing downtime during faults and reducing equipment damage, the 4NPL-3750 can lower total cost of ownership in high-energy power systems.