Product Features
The defining product characteristics of the 4D33900G19 include its robust thermal-magnetic trip unit for reliable overload and short-circuit protection. A key feature of the 4D33900G19 is its high interrupting capacity, which ensures system safety by reliably clearing high-level fault currents. The 4D33900G19 is engineered for fixed mounting applications, providing a stable and secure installation in switchgear and panelboards. The construction of the 4D33900G19 offers exceptional electrical and mechanical endurance, guaranteeing long service life and reduced maintenance needs in demanding environments.

4D33900G19Comparison

When comparing the 4D33900G19 to other models, such as the Eaton GJL225 or the Siemens WL225, several distinctions emerge. The 4D33900G19 often presents a more cost-effective solution for applications requiring a fixed-mount, 225A breaker with a 65kAIC rating, whereas some competitors might offer modular or plug-in versions at a higher cost. A potential disadvantage of the 4D33900G19 is its non-interchangeable trip unit, unlike some modern breakers that feature field-replaceable electronic trip systems, offering greater flexibility. However, the simplicity and proven reliability of the 4D33900G19's thermal-magnetic mechanism make it a preferred choice for many standard applications. It is not a direct drop-in replacement for all 225A breakers due to variations in physical dimensions and terminal configurations, necessitating a review of panelboard compatibility.

5X00226G04application cases

The 4D33900G19 sees substantial use in foreign engineering projects, particularly in legacy industrial plants and power generation facilities across South America and Southeast Asia where Westinghouse systems were originally installed. Furthermore, the 4D33900G19 is frequently specified in the retrofit and maintenance of electrical infrastructure in older commercial buildings and water treatment plants throughout Europe, valued for its durability and direct compatibility with existing Westinghouse switchgear lines. Its proven track record ensures the continued specification of the 4D33900G19 for ensuring the protection and reliability of critical power circuits.