Eaton NGS312038MCA12S03X23 Molded Case Breaker - UL Listed
Part Number: NGS312038MCA12S03X23
Manufacturer
Eaton
Part number
NGS312038MCA12S03X23
Quick Summary
NGS312038MCA12S03X23 molded case circuit breaker protects electrical distribution panels in industrial automation environments. It helps prevent faults from impacting production lines by delivering precise, rapid tripping and reliable overload protection. Engineers rely on its Digitrip 310 RMS electronic trip and ARMS three-pole design to minimize nuisance trips while maintaining selective protection across multi‑panel architectures. The device carries CSA Certified, UL Listed, and IEC Rated certifications, reinforcing compliance across North American and international installations. With a 1200A frame rating and metric line and load connections, it integrates smoothly into high-demand switchgear and modular panels, delivering predictable performance and long-term cost savings through reduced downtime and simpler maintenance.
Product Information
Extended Description
NGS312038MCA12S03X23 Eaton: Eaton Series G electronic molded case circuit breaker, NG-frame, NG, Digitrip 310 RMS, Electronic LSI trip, ARMS Three-pole, 1200A, 480 Vac, 85 kAIC at 240 Vac, 50 kAIC at 480 Vac, Metric Line and Load, 50/60 Hz, 100% rated AUX ST
Product Name
Eaton Series G molded case circuit breaker
Catalog Number
NGS312038MCA12S03X23
UPC
786689795160
Product Length/Depth
6 in
Product Height
9 in
Product Width
16.5 in
Product Weight
48 lb
Certifications
CSA Certified UL Listed IEC Rated
Type
Series G
Digitrip 310 RMS electronic trip delivers precise overload protection and faster fault clearance, reducing downtime and extending equipment life. Business impact: higher overall system availability and lower maintenance costs. Application: suited for large panels and critical feeders in manufacturing and processing facilities. ARMS three-pole configuration minimizes arc energy and improves selectivity in three-phase systems, enhancing safety while preventing unnecessary outages. Business impact: safer startup/shutdown and reduced collateral damage to adjacent circuits. Application: machine controls and packaging lines with three‑phase loads. The 1200 A frame rating supports high-current feeders, enabling scalable growth without replacing protection. Business impact: single solution for evolving power needs and reduced capital expenditures. Application: data centers and heavy machinery installations. Interrupting capacities of 85 kAIC at 240V and 50 kAIC at 480V ensure robust fault handling, boosting reliability. Business impact: improved crew safety and increased uptime during faults. Application: medium-to-large switchgear assemblies in mixed-voltage environments. Metric line/load connections simplify international wiring, and 50/60 Hz compatibility supports global deployments. Business impact: faster site migrations and standardized installation practices. Application: multinational manufacturing and energy sectors. The auxiliary contact is 100% rated, ensuring reliable status signaling for remote monitoring and control. Certifications CSA Certified, UL Listed, IEC Rated reinforce compliance across diverse markets, reducing qualification risk for panel builders.
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FAQs
Yes. The NGS312038MCA12S03X23 uses ARMS three-pole protection designed for three‑phase systems, enabling selective tripping and synchronized protection across multi‑panel switches. When integrating into Eaton Series G MCCBs, ensure correct alignment with the Digitrip 310 RMS trip unit and metric line/load terminations for reliable performance in new or retrofit panel builds.
Key ratings include a 1200 A frame rating, 480 Vac operating voltage, and interrupting capacities of 85 kAIC at 240 Vac and 50 kAIC at 480 Vac. It uses Digitrip 310 RMS electronic protection and ARMS trip unit, with 50/60 Hz compatibility and metric line/load connections suitable for international installations.
The device is CSA Certified, UL Listed, and IEC Rated, providing broad regulatory compliance for North American and international panels. These certifications help streamline qualification processes, reduce risk in safety audits, and support acceptance in multi-site deployments across manufacturing, energy, and process industries.
Best suited for high‑current electrical distribution panels, switchgear, and automation enclosures requiring reliable protection for large motors and feeders. Its 1200 A frame and ARMS three‑pole configuration support substantial load centers, while the Digitrip electronic trip ensures fast fault clearance and minimized production downtime.
Plan for metric line/load wiring and 6 in depth, 16.5 in width, and 9 in height to fit standard panels. Use the 100% rated auxiliary contact for remote signaling, ensure proper torque on terminations, and verify 50/60 Hz compatibility for global sites. The unit’s weight (~48 lb) should be accounted for in panel mounting and support structures.