The EZC250N4150: The breaker is rated for isolation per IEC 60947-2, meaning you can use it as a visible-break disconnect with positive contact indication. The toggle handle shows the contact state mechanically — no guessing whether the breaker is actually open.
Fixed mounting on a backplate with front-connect terminals top and bottom. The 140 mm width and 165 mm height fit a standard 4-pole MCCB footprint; the 60 mm depth leaves room for cable bending space in a 200 mm deep enclosure. Connection pitch is 35 mm, which matches standard busbar systems. IP20 finger-safe terminals are standard; IK07 impact resistance means it survives a screwdriver drop during panel assembly.
Protection and selectivity notes
The TM-D trip unit provides overload (thermal) and short-circuit (magnetic) protection on three poles (3t); the fourth pole is switched but not protected — it follows the other poles mechanically. There is no neutral protection and no earth-leakage module. For selectivity with downstream breakers, the magnetic trip threshold on the TM-D is fixed; you will need to coordinate with the let-through energy (I²t) of the downstream device. Category A utilization means it is not intended for frequent switching under load — it is a distribution breaker, not a motor-circuit protector.