What the 2500 A rating means for your switchgear lineup
In a 40 °C switchgear room, this chassis carries the full 2500 A without needing to downrate the bus. The N breaking capacity code means it is sized for standard distribution duty, not high-fault industrial feeds; verify your available fault current against the N curve before committing the BOM line. Three-pole configuration (3P) covers the standard three-phase power path. The drawout mounting means the chassis slides into a fixed cradle — no need to disconnect main power cables for maintenance or swap-out. That cuts a breaker change from a half-shift to a rack-out and slide-in.
Drawout integration — what it changes in the panel
Drawout mounting means the chassis is the removable portion of a drawout air circuit breaker. The fixed cradle — ordered separately — stays wired to the bus and load cables. The chassis carries the arc chutes, main contacts, and control wiring plug. For a commissioning engineer: the racking mechanism engages at the cradle's shutter, and the control plug mates when the chassis is fully home. Verify the cradle order code matches this chassis frame size before the panel build. Dimensions: 445 mm deep, 400 mm wide, 440 mm high. That depth is the critical panel dimension — the chassis plus racking handle travel needs clearance behind the door. Standard 600 mm deep enclosures fit it; shallower cabinets will not.