Eaton Series C MCCB NG3900WA12S03Z07 - T1200NB3
Part Number: NG3900WA12S03Z07
Quick Summary
The Eaton Series C MCCB NG3900WA12S03Z07 provides robust overcurrent protection for industrial power distribution systems. Engineers often struggle with nuisance trips, miscoordination, and integration with generator environments. Certifications often include CE and UL safety marks, IP-rated enclosures, and SIL considerations. This 3P 900A molded case breaker features an auxiliary and shunt trip option, enabling fast isolation and enhanced personnel safety, while its compatibility with line and load collars simplifies retrofit in control panels and switchgear. For procurement, the robust mechanical design reduces variability and supports ongoing uptime. In practice, this translates to reliable protection for critical loads and quick fault isolation.
Product Information
Extended Description
NG3900WA12S03Z07 Eaton: Eaton Series C molded case circuit breaker, 3P 900A N Generator Bkr w/ line and load collars T1200NB3, Aux and shunt trip
Product Name
Eaton Series C molded case circuit breaker
Catalog Number
NG3900WA12S03Z07
UPC
786689797553
Product Length/Depth
6 in
Product Height
16.5 in
Product Width
9 in
Product Weight
48 lb
Compliances
Contact Manufacturer
Type
Series C
Special features
Molded case circuit breaker
Feature → Business Impact → Application: The NG3900WA12S03Z07 leverages a 3P 900A rating to handle substantial fault currents without compromising system stability. This topology minimizes voltage drop and arc energy during interruption, improving selectivity across feeders and lowering the risk of collateral equipment damage. In generator protection scenarios and main feeders, engineers gain predictable trip performance and faster fault isolation across multiple loads. Feature → Business Impact → Application: The Series C molded case design delivers a compact, rugged enclosure with proven mechanical durability. The molded case reduces insulation exposure and simplifies field servicing, while the 6 in depth and 9 in width fit standard switchgear footprints. Installations benefit from streamlined panel layouts, reduced panel height, and consistent thermal performance in harsh industrial environments. Feature → Business Impact → Application: Integrated auxiliary and shunt trip capabilities enable remote fault clearance and enhanced safety coordination. The presence of aux contacts supports signaling for PLCs and motor starters, while the shunt trip provides immediate disconnection on actuating events. In critical process lines, this combination translates to improved safety margins and faster shutdowns during abnormal conditions. Feature → Business Impact → Application: Line and load collars simplify mounting and alignment with existing busbars and lugs, reducing retrofit risk. This compatibility reduces installation time, minimizes wiring errors, and improves maintenance accessibility. For panel builders, that means fewer revisions during integration with legacy equipment and easier future upgrades. Feature → Business Impact → Application: Dimensional data and weight (6 in length, 9 in width, 16.5 in height, 48 lb) guide cabinet planning and replacement strategies. The predictable footprint supports straightforward procurement, spare-part planning, and consistent availability of mating accessories from Eaton. Feature → Business Impact → Application: Compliance status requires confirmation with the manufacturer, ensuring local codes and standards are met. This flexibility lets users tailor certification packages to their jurisdiction while maintaining a clear path to regulatory alignment and safe operation.
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FAQs
To install NG3900WA12S03Z07 in an existing panel, ensure the cutout and mounting rails accommodate a 6 in depth, 9 in width footprint and 16.5 in height. Use line/load collars for proper busbar alignment, and plan wiring for the auxiliary contact and shunt trip. Verify clearance for serviceability during maintenance and testing.
Key specifications include a three-pole configuration (3P), a 900 A continuous current rating, and the Series C design. The device supports auxiliary and shunt-trip options, with dimensions of 6 in L, 9 in W, 16.5 in H and a weight of 48 lb. It targets industrial protection for medium-to-large feeders.
Yes. The NG3900WA12S03Z07 is well suited for generator protection schemes and large distribution feeders, offering fast, reliable interruption during faults. Its 3P 900A rating aligns with common generator breaker requirements, while the auxiliary and shunt trip enable coordination with remote controls and safety interlocks in plant environments.
Compliance details are listed as Contact Manufacturer for this model. Typical certifications pursued for MCCBs include CE and UL safety marks, with IP-rated enclosures where applicable. Confirm the exact ratings and certificates with Eaton before purchase to meet local codes and your industrial safety program.
Expect ROI from reduced downtime, fewer nuisance trips, and lower maintenance costs thanks to robust mechanical design and clear tripping logic. The compact footprint and line/load collar compatibility speed up installation and future upgrades, while the integrated trip options minimize external interlocks, enhancing process safety and operator confidence in critical power systems.