It carries a 330 kA breaking capacity at 240 V AC — that figure drops to 242 kA at 415/440 V, 187 kA at 500 V, and 52.5 kA at 690 V, so the available fault current at the installation point drives the selection, not just the headline number. The ETU350M electronic overcurrent release provides adjustable protection curves, and the built-in phase failure detection catches a lost phase before the motor overheats.
The 63 A rating holds across ambient temperatures up to 50 °C; at 55 °C it derates to 60.48 A, and at 70 °C to 56.7 A. If the panel runs hot, the actual continuous current capacity is lower than the nameplate — size the load accordingly. The ETU350M release is a microprocessor-based trip unit with LSI protection curves (long-time, short-time, instantaneous). It enables selective coordination downstream — a key requirement for motor control centers where you want the branch breaker to trip before the main.
Built-in accessories and variants
No communication module is fitted; this is a standalone protection device, not a networked power monitor. The basic switch assembly is order code 3VA2163-7MN36-0AA0, and the auxiliary trip is 3VA9608-0BB25 — these are the sub-assembly codes for replacement parts if the breaker is damaged in service.