Personnel and fire protection: cable and line protection against overload and short-circuit
Rated residual operating current:
I∆n ≥30mA: additional protection in the case of direct contact.
I∆n ≥300mA: preventative fire protection in the case of ground fault currents
Tripping curve:
B curve (3 to 5 inches) protection and control of the circuits against overloads and short-circuits; protection for people and big length cables in TN and IT systems
C curve (5 to 10 inches) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current
