Eaton NGS312032MCA12S03Y08 Series G molded case circuit breaker - UL Listed

Part Number: NGS312032MCA12S03Y08
NGS312032MCA12S03Y08
Manufacturer
Eaton
Part number
NGS312032MCA12S03Y08
Category

Quick Summary

The Eaton NGS312032MCA12S03Y08 molded case circuit breaker protects electrical distribution by interrupting fault currents in three-pole, 1200 A systems. Engineers often struggle with protection coordination and nuisance trips in demanding plants, but Digitrip 310 RMS with LSI trip helps minimize outages. UL Listed, IEC rated, and CSA certified provide cross-border compliance for panel builders and integrators. In addition to robust protection, this unit offers reliability for critical loads and scalable options like auxiliary switch and shunt trip to support advanced control strategies.

Product Information

Extended Description

NGS312032MCA12S03Y08 Eaton: Eaton Series G electronic molded case circuit breaker, NG-frame, NG, Digitrip 310 RMS, LSI trip, Three-pole, 1200A, 480 Vac, 85 kAIC at 240 Vac, 50 kAIC at 480 Vac, Line only, Metric, 50/60 Hz, 100% rated, with aux switch, and shunt trip
Product Name
Eaton Series G molded case circuit breaker
Catalog Number
NGS312032MCA12S03Y08
UPC
786679193099
Product Length/Depth
6 in
Product Height
9 in
Product Width
16.5 in
Product Weight
48 lb
Certifications
UL Listed IEC Rated CSA Certified
Type
Series G
Application of Tap Rules to Molded Case Breaker Terminals Application of Tap Rules to Molded Case Breaker Terminals High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid High performance operating handles for Series G circuit breakers product aid Breaker service centers Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2 Eaton Specification Sheet - NGS312032MCA12S03Y08 Eaton Specification Sheet - NGS312032MCA12S03Y08 Eaton Specification Sheet - NGS312032MCA12S03Y08
Feature Digitrip 310 RMS electronic trip with LSI trip. Business Impact Improves protection coordination, reducing nuisance trips and unplanned downtime in complex power systems. Application Suitable for large motors and process line protections where precise trip settings are critical. The Eaton solution supports faster fault clearance and improved reliability in mission-critical panels. Feature Three-pole NG-frame design rated at 1200 A with 480 VAC operation. Business Impact Enables higher current capacity in a compact enclosure, reducing panel count and simplifying wiring in industrial control centers. Application Ideal for motor control centers and distribution panels needing high current handling with streamlined installation. Feature Short-circuit capability with 85 kAIC at 240 VAC and 50 kAIC at 480 VAC. Business Impact Allows superior fault withstand and safe operation in high-energy environments, helping meet utility and safety requirements. Application Suitable for demanding OEM equipment and heavy-load machines. Feature 100% rated, 50/60 Hz operation. Business Impact Ensures consistent protection performance across global facilities, supporting international projects and uptime. Application Works reliably in plants with mixed-frequency power supplies. Feature Optional aux switch and shunt trip. Business Impact Enables remote signaling, interlock control, and enhanced safety interlocks, reducing risk during maintenance and startup. Application Common in control panels requiring remote trip capability and safe shutdown. Feature Robust physical dimensions (6 in depth, 9 in height, 16.5 in width) and 48 lb weight. Business Impact Facilitates mounting versatility and straightforward retrofits in existing enclosures, lowering installation time and costs. Application Suitable for upgrades in legacy MCCs where space and weight constraints matter.

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FAQs

For 480V installations, ensure the device is mounted in an enclosure that provides adequate clearance for the 1200 A frame, with proper conductor sizing and torque settings per the datasheet. Verify that the panel bus and wiring terms match the three-pole configuration and that the auxiliary switch or shunt trip options are wired correctly for safe remote operation.
Digitrip 310 RMS offers precise real-time current sensing and instantaneous protection using thermal-magnetic principles, while LSI (Long-Time Inverse) protection provides staged tripping for sustained overloads. Together, they minimize nuisance trips, optimize protection coordination with downstream devices, and improve uptime in high-load industrial applications such as conveyors, pumps, and presses.
Yes. The unit ships with options for auxiliary switches and shunt trips, enabling remote fault signaling and safe emergency shutdowns. These features support safer maintenance, better interlocking with PLCs or SIO systems, and enhanced control schemes in demanding automation environments.
The MCCB is UL Listed, IEC rated, and CSA Certified, ensuring compliance with both North American and international electrical codes. This simplifies panel approvals, supports global deployments, and provides assurance of performance under standard test conditions, critical for safety, liability, and regulatory adherence in regulated industries.
Expected ROI stems from reduced downtime due to accurate protection and lower maintenance costs from fewer nuisance trips. Regular inspection should focus on terminal torque, trip unit calibration, and accessory integrity. The Digitrip 310 RMS with LSI protection minimizes unplanned outages, extending motor life and stabilizing process uptime in continuous operations.