Lovato P1MB4PD16, Miniature Circuit Breaker, Thermal and Magnetic Trip Type, Four Pole (4P), 10kA, 4 Modules, D-Curve Characteristic, 16A

These devices are used to protect against short circuits and overloads of wiring installations and loads in panel boards, office buildings, stores and similar applications. 
Their purpose is circuit protection, circuit isolation and load operation controls. They have characteristics of instantaneous trip defined as follows:
– B-curve: instantaneous trip 3...5 times In for non-inductive or low inductive loads (heating resistors, generators, very long wire lines)
– C-curve: instantaneous trip 5...10 times In for inductive loads (mixed loads, resistive and inductive with low inrush current)
– D-curve: instantaneous trip 10...14 times In for highly inductive loads (loads with high inrush and current such as motors).