The Schneider Electric EZC100N1040 is a 1-pole EasyPact EZC100N circuit breaker rated 40 A at 40 °C, with a thermal-magnetic TM-D trip unit providing short-circuit and overload protection for distribution circuits. It carries a 25 kA Icu breaking capacity at 110-130 V AC (50/60 Hz) per IEC 60947-2, and 18 kA at 220-240 V AC. The 1-pole form factor with a 25 mm width and 60 mm depth fits standard backplate mounting in distribution panels.
At 50 °C the rating holds at 40 A per the TM-D trip curve — no derating needed for moderately warm enclosures. The thermal-magnetic trip responds to sustained overloads (thermal bimetal) and instantaneous short-circuits (magnetic coil), covering the two failure modes a distribution circuit sees. The N breaking capacity code indicates this is the standard-interrupting version of the EZC100N frame. The IP20 finger-safe enclosure protects against solid objects over 12 mm but not against moisture; mount inside a sealed cabinet for wet-area use.
Fixed mounting on a backplate with front-facing connections — both line and load terminate on the front face. The 25 mm pole pitch matches standard DIN-rail terminal block spacing, so it aligns cleanly in a multi-pole distribution row. The toggle actuator gives positive contact indication: you can see and feel the mechanism position. Mechanical durability of 13,000 cycles suits frequent switching applications like lighting contactor replacement or machine tool disconnects. The IK07 impact rating handles accidental tool drops during panel maintenance.