Features:

• 4-element overcurrent protection (3 Phase + EF) with instant trip.
• Lower overcurrent setting (minimum 10%) for small transformers.
• Programmable settings via local keys and remote communication port with non-volatile memory.
• Five selectable curves (C1, C2, C3, C4, C5) plus Define Time option (C6).
• Instantaneous over-current protection with an adjustable timer, inrush current blocking, cold load pickup, and Trip Circuit Supervision (TCS) function.

ANSI: 50 | 51 | 50N | 51N