What this MCCB is rated to do
That thermal stability matters when this breaker sits in a crowded panel with other heat sources. Interrupting capacity is the headline number for a sourcing decision: 187 kA at 240 VAC, 121 kA at 415/440 VAC, 75.6 kA at 500 VAC, and 3.7 kA at 690 VAC. If your fault-current study lands above these at the service voltage, this breaker is not the right pick — no exceptions. It is a straight line-protection device — no frills, no remote trip, no GFCI inside. Insulation voltage rated 800 V, front face IP40.
Four-pole MCCB in that footprint — verify the mounting base and bus-bar spacing against your existing panel layout. The 140 mm width is the critical dimension for multi-breaker groupings on a common bus.
