Masterpact MTZ devices are protected against:
Overvoltages caused by devices that generate electromagnetic disturbances.
Overvoltages caused by atmospheric disturbances or by a distribution-system outage (for example, failure of a lighting system).
Devices emitting radio waves (radios, walkie-talkies, radar, etc.).
Electrostatic discharges produced by users.
Masterpact MTZ devices have successfully passed the electromagnetic compatibility tests (EMC) defined by IEC/EN 60947-2, Annex F.
This testing reduces the chance of:
Tripping times outside of published curves
Immunity: ability of a device to operate without damage in the presence of an electromagnetic disturbance.
Susceptibility: inability of a device to operate without damage in the presence of an electromagnetic disturbance.
Conducted interference: disturbances generated by the device and transmitted by the conductors (of power supply, signalling, or control) in the form of electrical voltage.
Radiated interference: disturbances generated by the device and radiated in the environment in the form of electromagnetic waves.