Eaton NRXBUSEXT503 Adapter Kit - UL Listed 50 kA
Part Number: NRXBUSEXT503
Quick Summary
Eaton NRXBUSEXT503 adapter kit enables NRX protection interfaces for three-pole installation in switchgear. Engineers often struggle to source compatible ICCB adapters that meet certification requirements and shipping schedules. UL Listed, CSA Certified, and ANSI-compliant, this kit supports North American electrical protection standards across panel builds. Designed for the NRX family and Power Defense ICCB applications, it helps reduce field rework and commissioning time. By standardizing on a single adapter solution, maintenance teams gain predictable lead times, easier spares management, and clearer documentation for audits. This aligns with OEM specifications and procurement workflows, reducing vendor complexity. It also supports safe installation with standard mounting and compatible cable entries.
Product Information
Extended Description
NRXBUSEXT503 Eaton: Eaton Power Defense ICCB adapter kit, 50 kA, Three-pole, Power Defense ICCB, 3 per box, For: NRX NF
Product Name
Eaton Series NRX adapter kit
Catalog Number
NRXBUSEXT503
UPC
786676039901
Product Length/Depth
10.5 in
Product Height
1 in
Product Width
8.25 in
Product Weight
13 lb
Warranty
1 year
Certifications
UL Listed CSA Certified ANSI
Amperage Rating
50 kA
Series
Series NRX
Number of poles
Three-pole
Quantity
18
Feature 50 kA amperage rating → Business Impact This high interrupt capability enhances system safety by reliably interrupting fault currents, reducing the risk of cascading outages in critical power paths. Application: Ideal for Power Defense ICCB configurations in NRX NF panels. Feature Three-pole design → Business Impact Enables true three-phase protection without bypass, simplifying wiring and reducing panel footprint. Application: Three-pole NRX NF installations where balanced protection is essential. Feature Certifications UL Listed, CSA Certified, ANSI → Business Impact Ensures regulatory compliance and streamlined procurement across North America, lowering audit friction. Application: New builds and maintenance cycles in industrial facilities. Feature Compact dimensions (10.5 in L × 8.25 in W × 1 in H) and 13 lb weight → Business Impact Space-efficient design accelerates installation and reduces chassis modifications. Application: Retrofit and new-panel projects with limited enclosure space. Feature 1-year warranty → Business Impact Provides lifecycle confidence and predictable support, reducing total cost of ownership. Application: OEM manufacturing and long-term service contracts. Feature Compatibility with NRX and Power Defense ICCB → Business Impact Standardized components simplify spares management, training, and maintenance planning. Application: Panel builders and service teams working on NRX systems.
Get a Quick Quote for a Eaton NRXBUSEXT503
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton NRXBUSEXT503?
Enquire Now
FAQs
The NRXBUSEXT503 is designed for Eaton Series NRX systems and NRX NF configurations that use Power Defense ICCB protection. It provides a three-pole NRX interface and is compatible with standard NRX mounting patterns and panel configurations. When planning use, confirm the NRX NF alignment, enclosure space, and mounting hardware compatibility to ensure a straightforward retrofit or new-build installation.
This adapter kit carries a 50 kA interrupt rating, suitable for robust fault-current interruption in NRX-based protection schemes. It is intended for use with Power Defense ICCB assemblies to maintain high protection margins and reduce the risk of arcing or system-wide faults in industrial power distribution.
Yes. The NRXBUSEXT503 is specifically designed for NRX NF applications, offering a three-pole NRX interface with a 50 kA rating. Its UL Listed and CSA Certified status helps ensure reliability and compliance in industrial environments while simplifying procurement for NF circuit protection teams.
The kit is UL Listed, CSA Certified, and ANSI-compliant. These certifications align with North American electrical codes and safety standards, reducing qualification time for panel builds and easing quality audits, vendor qualification, and regulatory submissions during commissioning and maintenance.
Using NRXBUSEXT503 can shorten commissioning times due to standardized NRX interfaces, reduce field rework, and simplify spares management with a common adapter component. The 1-year warranty provides lifecycle support, contributing to lower total cost of ownership and more predictable maintenance planning for NRX-powered protection schemes.