The C16H34V160: The H breaking capacity code delivers 70 kA Icu at 380/415 V AC, 65 kA at 440 V, and 100 kA at 220/240 V, all per IEC 60947-2. At 480 V AC the breaker is also rated 65 kA Icu per UL 60947-4-1. This level of interrupting capacity allows the NSX160H to be used as a main or feeder breaker in high-fault installations where downstream coordination with lower-rated devices is required. The 160 A frame size with H rating is a common choice for distribution panels feeding motor control centers or large branch circuits.
Trip unit and protection logic
The MicroLogic 4.2 electronic trip unit is field-adjustable for long-time pickup and delay, short-time fixed delay, and instantaneous pickup. Earth-leakage protection is integrated, with sensitivity set via the IΔn rotary switch. Local signaling uses a flashing green LED for ready-to-operate status, a red LED at 105 % Ir for overload, and an orange LED at 90 % Ir for pre-alarm.
Mounting and environmental ratings
The IP40 enclosure (IK07 impact resistance) suits indoor panel installation in dry environments. Operating altitude is 0–2000 m without derating, with derating required above 2000 m.