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Eaton NGH312038E Series G NG-Frame MCCB - 1200A 3-Pole 600VAC Digitrip 310+ ALSI Electronic Circuit Breaker
Source: | Author:kongjiang | Published time: 2026-07-15 | 64 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
Eaton NGH312038E Series G NG-Frame MCCB - 1200A 3-Pole 600VAC Digitrip 310+ ALSI Electronic Circuit Breaker
Product Overview
The Eaton NGH312038E is a heavy-duty NG-frame molded case circuit breaker (MCCB) belonging to Eaton’s flagship Series G global MCCB portfolio, engineered for high-current industrial low-voltage power distribution applications. Rated 1200A continuous, 3-pole, 600VAC maximum operational voltage, this unit is equipped with Digitrip 310+ ALSI electronic trip unit integrating Arcflash Reduction Maintenance System, delivering comprehensive long-time, short-time, and instantaneous fault protection for large panelboards, switchgear, motor control centers (MCCs), and industrial power substations.
Series G represents Eaton’s compact global MCCB platform with up to 35% smaller footprint than legacy MCCBs, full global certifications (UL 489, CSA C22.2, IEC 60947-2, CE, CCC) and field-installable modular internal/external accessories for flexible on-site configuration. NGH312038E is the high-interrupt variant of NG-frame 1200A 3P breakers, designed for facilities with high short-circuit fault risks, including manufacturing plants, data centers, oil & gas auxiliary power, and commercial high-rise main distribution equipment.

Model Code Breakdown (NGH312038E)

  • NG: Series G NG Frame (800–1200A current range)

  • H: High interrupt capacity rating

  • 3: 3-Pole configuration

  • 120: Nominal continuous current 1200 Amperes

  • 38: Digitrip 310+ ALSI electronic trip unit (Arcflash Reduction LSI protection)

  • E: Globally certified (UL/CSA/IEC/CE/CCC) standard tapped terminals

Core Official Technical Specifications

  1. Electrical Ratings

  • Continuous Current: 1200 A

  • Poles: 3 Pole

  • Rated Operational Voltage: Up to 600 VAC, 250 VDC

  • Interrupt Capacity (kA rms symmetrical):


    • 100 kA @ 240 VAC

    • 65 kA @ 480 VAC

    • 35 kA @ 600 VAC

  • Trip Unit: Digitrip 310+ ALSI Electronic Trip (Adjustable Long-Time / Short-Time / Instantaneous + Arcflash Reduction Maintenance System)

  • Sensing: True RMS fault detection

  • Frequency: 50 / 60 Hz

  • Rated Temperature: -20°C ~ +70°C

  • Rated Frame: NG Frame (Series G high-current frame)

  • Rating Class: 80% rated continuous operation

  1. Mechanical & Construction

  • Mounting: Fixed panel bolt-on mounting, compatible with Eaton Series G panelboards & MCC enclosures

  • Termination: Imperial tapped line & load busbar terminals (lugs sold separately)

  • Dimensions (W×H×D): 8.25 × 16.00 × 5.50 inches (209.6 × 406.4 × 139.7 mm)

  • Approx. Weight: 48 lbs

  • Reversible feed design (supports reverse line/load wiring)

  1. Global Compliance Certifications

  2. UL 489 Listed, CSA C22.2 No.5 Certified, IEC 60947-2, CE Mark, CCC Certified, HACR Rated, NEMA AB1 compliant.

Key Design & Official Benefits (From Eaton Catalog V4-T2 Series G)

  1. Compact Series G Frame Architecture

  2. NG frame adopts an optimized miniaturized structure, reducing cabinet space occupation by 35% vs traditional large-frame MCCBs, lowering enclosure procurement and installation costs for large power systems.

  3. Digitrip 310+ ALSI Advanced Electronic Trip

  4. Adjustable LSI three-stage fault protection with built-in Arcflash Reduction Maintenance System (ARMS) to lower arc flash hazard levels during equipment maintenance, reduce required PPE classification and boost field technician safety. True RMS sensing ensures accurate protection under distorted industrial harmonic loads.

  5. Ultra-High Short-Circuit Interrupt Performance

  6. 100kA @240V high interrupt rating handles severe system short-circuit faults, preventing breaker burnout and downstream equipment cascading damage for high-fault industrial power networks.

  7. Full Modular Field Accessories

  8. Universal internal accessory cavity supports field installation of auxiliary switches, alarm contacts, shunt trips and undervoltage releases without factory pre-modification; external kits include padlock handles, interlocks and terminal shields for site customization.

  9. Global Cross-Regional Compatibility

  10. Unified design meets North American (UL/CSA), European (IEC/CE), and Chinese (CCC) standards, suitable for multinational project unified procurement and standardized power system design.

  11. Rugged Industrial Durability

  12. Patented blow-open contact architecture quickly dissipates fault arcs; wide temperature range (-20°C to +70°C) adapts to factory, outdoor auxiliary cabinet, and data center harsh operating environments.

Typical Industrial Applications

  • Main & sub distribution switchgear for large manufacturing facilities

  • Data center critical power distribution panels

  • Commercial high-rise building main MCC rooms

  • Oil, chemical & petrochemical plant auxiliary power circuits

  • Heavy industry motor control centers (MCC)

  • Hospital, campus, large-scale low-voltage power systems

  • Renewable energy station AC distribution cabinets

Compatible Accessories (Eaton Official Supported)

  • Internal: Auxiliary switches, alarm switches, shunt trip coils, undervoltage releases (UVR)

  • External: Padlockable handle interlocks, walking beam mechanical interlocks, terminal insulating barriers, busbar lug kits, rotary door operating handles

Compliance & Quality Assurance

All NGH312038E breakers undergo full Eaton factory short-circuit, temperature rise, and endurance testing before shipment, complying with the CA08100005E Volume4 circuit protection catalog quality specifications. Standard factory warranty: 18 months after shipment or 1 year post-installation, whichever comes first.

5. Website H2 / H3 Page Hierarchy Headings

H1: Eaton NGH312038E Series G NG-Frame Molded Case Circuit Breaker – 1200A 3-Pole 600VAC Digitrip 310+ ALSI Trip
H2: Product Introduction & Series G Platform Overview
H2: NGH312038E Model Code Definition
H2: Full Official Technical Specifications
H2: Core Product Performance Advantages
H2: Industrial Application Scenarios
H2: Supported Modular Accessories List
H2: Global Standards & Certifications

6. Image Alt Text (Google Image SEO)

Eaton NGH312038E Series G NG Frame MCCB 1200A 3-Pole 600VAC Digitrip 310+ ALSI Electronic Molded Case Circuit Breaker

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