Eaton RGH320039B21EA12B05S Molded Case Circuit Breaker UL
Part Number: RGH320039B21EA12B05S
Manufacturer
Eaton
Part number
RGH320039B21EA12B05S
Quick Summary
Introducing the Eaton RGH320039B21EA12B05S Molded Case Circuit Breaker—Series G designed for demanding power distribution. This device protects large-scale electrical systems by interrupting fault currents in milliseconds, reducing downtime and equipment damage. A common challenge engineers face is balancing safety, selectivity, and panel space in high-current environments; this MCCB delivers with a 2000 A rating and a robust LSIG trip mechanism. Certifications include UL Listed, IEC Rated, and CSA Certified, reinforcing compliance across North American and international panels. In practice, you gain easier panel integration, coordinated protection, and long-term lower maintenance costs thanks to reliable performance in harsh industrial settings. Secondary keywords: molded case circuit breaker, Series G, high-current MCCB, LSIG protection, trip options, industrial electrical protection.
Product Information
Extended Description
RGH320039B21EA12B05S Eaton: Eaton Series G complete molded case circuit breaker, RGH, Three-pole, LSIG arms, 2000A, English terms, Shunt, Aux alarm, GFA (Trip)
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
RGH320039B21EA12B05S
UPC
786689397371
Product Length/Depth
533 mm
Product Height
457 mm
Product Width
470 mm
Product Weight
52163 g
Certifications
UL Listed IEC Rated CSA Certified
Type
Series G
Amperage Rating
2000 A
Trip Type
T258
Protection
LSIG with arms
Number of poles
Three-pole
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Eaton Specification Sheet - RGH320039B21EA12B05S
The RGH320039B21EA12B05S is built for high-demand power systems, delivering a 2000 A amperage rating to support large feeders and motor circuits. This feature translates to improved fault handling and reduced risk of cascading failures, ensuring uptime in critical manufacturing lines and data centers. The Series G design with LSIG arms enables selective coordination, helping you minimize unnecessary outages while protecting sensitive equipment and personnel. The included shunt, auxiliary alarm, and GFA trip options enhance remote diagnostics and fast alarms, supporting preventative maintenance programs and faster incident response. With a three-pole configuration, three-phase protection aligns with standard industrial electrical schemes, simplifying panel layout and installation. The unit’s robust construction, precise trip performance, and certified compatibility address common objections about reliability, installation complexity, and long-term cost of ownership. Long-tail keywords addressed include molded case circuit breaker for high-current systems, Series G MCCB with LSIG, three-pole protection for 3-phase systems, and reliability-focused industrial electrical protection.
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FAQs
The RGH320039B21EA12B05S is designed for standard three-pole Series G MCCB installations and follows Eaton's common mounting footprint. With dimensions of 533 mm depth, 457 mm height, and 470 mm width, it integrates predictably into power distribution panels, and LSIG arms along with optional shunt and auxiliary alarms support seamless integration with existing protection schemes.
The unit uses the T258 trip characteristic to balance time-delayed protection with fast response for faults. The LSIG with arms enhances selective coordination, interrupting fault currents quickly to protect upstream equipment. With a 2000 A rating, it is well-suited for high-current feeders and motor circuits, providing reliable protection under short circuit conditions.
This MCCB is ideal for heavy-duty power distribution in manufacturing facilities, data centers, and process industries where large feeders and three-phase loads demand robust protection. The Series G design offers durability in harsh environments, while the three-pole configuration supports typical 3-phase electrical systems used in industrial settings.
The device is UL Listed, IEC Rated, and CSA Certified, covering safety and performance for North American and international installations. These certifications help meet electrical codes, expedite panel approvals, and reduce procurement risk. They also support QA processes and ensure compatibility with common industry protection standards in industrial facilities.
Maintenance focuses on verifying terminal connections, monitoring contact wear, and reviewing trip history for preventive maintenance planning. The rugged Series G design reduces maintenance frequency in harsh environments, while certifications support compliant procurement. Over the life cycle, improved fault protection, reduced downtime, and easier replacement of units can lower total cost of ownership.