It carries 200 kA Icu at 254 VAC 60 Hz per ANSI C37.50, tapering to 100 kA Icu at 635 VAC 50 Hz. The drawout cradle isolates the breaker from the bus for safe racking without unbolting main lugs — standard for switchgear lineups where a unit can be rolled out for maintenance while the bus stays live.
The breaking capacity code means the interrupting ratings follow the curve: 200 kA at 254 VAC 60 Hz, 150 kA at 508 VAC 50 Hz, and 100 kA at 635 VAC 50 Hz. The integral instantaneous protection trips between 72 and 88 kA — that is the magnetic-only pickup for bolted faults; the electronic trip unit (not listed here) handles the time-current curves for coordination.
Integration Notes
Drawout mounting means the breaker slides into a fixed cradle with primary disconnects and control wiring stabs. The base plate rails and 4.5 in (115 mm) connection pitch match standard ANSI switchgear cubicle cutouts. Overall dimensions: 17.5 in wide × 17.3 in tall × 16.8 in deep (444.3 × 438.8 × 426.8 mm). Mechanical durability is rated at 10,000 cycles per ANSI C37.50; electrical durability at 1,000 cycles under rated conditions. Maximum breaking time is 9 ms, closing response time 70 ms — both within typical ANSI metal-clad switchgear requirements for fast fault clearing.