The Schneider Electric EZC250H3150 is a 3-pole thermal-magnetic circuit breaker from the EasyPact EZC250H series, rated 150 A at 40 °C (150 A at 50 °C with the TM-D trip unit). It's a distribution-grade breaker (Category A, no intentional short-time delay) built for fixed backplate mounting in commercial and industrial switchboards. The H breaking capacity code means it delivers 36 kA Icu at 400–415 V AC — enough headroom for most secondary distribution panels where the upstream transformer limits fault current below that level.
On the DC side it handles 30 kA at 125 V DC (single-pole) or 250 V DC (two poles in series), which covers common battery-bank and UPS distribution applications.
Dimensions are 105 mm wide × 165 mm high × 60 mm deep — a compact footprint for a 150 A frame, so it fits retrofit cutouts sized for older 100 A frames. IP20 finger-safe terminals, IK07 impact resistance. Toggle handle with positive contact indication (you can see the contact state through the front window). No earth-leakage module or neutral protection built in — this is a straight thermal-magnetic breaker for overload and short-circuit duty only.