Eaton RG404FAB3SFNNC Cassette Breaker - 4000 A Rating
Part Number: RG404FAB3SFNNC
Quick Summary
The Eaton RG404FAB3SFNNC cassette provides reliable low-voltage protection for switchgear and distribution panels. Downtime and mis-wiring slow projects, but this unit ships without pre-wired components, simplifying installation and commissioning. It complies with IEC 60947-2 and carries the CE-like practicality of NRX RF IEC Cass configurations for broader market use. It’s built as part of the NRX series, offering four poles, a 4000 A rating, and robust performance in demanding environments. Leverage its field-friendly footprint and clear Eaton documentation to streamline procurement and reduce total cost of ownership.
Product Information
Extended Description
RG404FAB3SFNNC Eaton: Eaton Power Defense ICCB low voltage power circuit breaker cassette, OEM NRX RF IEC Cass, 4P, 4000A, no pre-wired
Product Name
Eaton Series NRX low voltage power circuit breaker cassette
Catalog Number
RG404FAB3SFNNC
UPC
786679193556
Product Length/Depth
18 in
Product Height
24 in
Product Width
31 in
Product Weight
75 lb
Warranty
1 year
Certifications
IEC 60947-2
Catalog Notes
NRX RF IEC Cass, 4P, 4000A, no pre-wired
Type
Cassette
Amperage Rating
4000 A
Frame
RF
Series
Series NRX
Number of poles
Four-pole
Feature: Amperage rating of 4000 A. Business Impact: Enables reliable protection of high-current feeders, minimizing trip-induced downtime and maximizing overall system reliability. Application: Large switchgear feeders, data centers, and heavy manufacturing lines requiring high fault-current handling. Feature: Four-pole RF frame. Business Impact: Provides complete three-phase protection with a common trip, reducing coordination complexity and improving safety. Application: 3-phase distribution cabinets and motor feeds in industrial plants. Feature: No pre-wired configuration. Business Impact: Speeds up installation, lowers wiring errors, and shortens commissioning time. Application: OEM panel assemblies and retrofit projects where field wiring is a critical bottleneck. Feature: IEC 60947-2 compliant with NRX RF IEC Cass notes. Business Impact: Ensures global compatibility and regulatory alignment, easing cross-border deployments. Application: European and global manufacturing sites seeking standard protection practices. Feature: Large protective footprint with documented dimensions. Business Impact: Predictable installation planning and seamless integration with existing cabinet footprints. Application: Panel upgrades, retrofits, and modular installations across facilities. Insight: The RG404FAB3SFNNC aligns with NRX design language, making spare parts, replacements, and training consistent across projects, reducing lifecycle risk for OEMs and end users.
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FAQs
The RG404FAB3SFNNC is designed as a cassette with no pre-wired components, simplifying field installation. Begin by verifying panel compatibility with NRX RF IEC Cassette configurations, then mount the four-pole unit into the designated frame, connect the main bus bars, and secure terminal connections as per the Eaton installation manual. This approach reduces wiring errors and speeds up commissioning, which is critical in retrofit projects and OEM panel builds.
With a 4000 A amperage rating and a four-pole RF frame, this cassette delivers robust protection for large feeders and three-phase circuits. The high current capability supports critical loads in data centers, manufacturing lines, and major distribution cabinets, offering reliable interruption protection while maintaining system stability during fault conditions.
Yes. The RG404FAB3SFNNC is designed to meet IEC 60947-2 standards for low-voltage power circuit breakers. This compliance ensures safe operation, interoperability with other IEC-certified equipment, and smoother regulatory approval in markets that recognize IEC 60947-2, making it suitable for global deployments and OEM integrations.
This cassette is specified with a substantial footprint suitable for four-pole, high-current installations: 18 in depth, 24 in height, and 31 in width, weighing about 75 lb. When planning retrofits or panel upgrades, verify available cabinet space, mounting rails compatibility, and ensure door clearance for safe operation and service access.
The unit’s 1-year warranty provides initial support, while IEC 60947-2 compliance and NRX RF design reduce lifecycle risk and spare-part complexity. By enabling faster installation (no pre-wired components) and reliable high-current protection, teams can reduce downtime, shorten project timelines, and improve total cost of ownership across capital upgrades and ongoing production schedules.