No-voltage maintaining contactor

The utility model provides a no-voltage maintaining contactor provided with a main contact, a travel switch, a switching-in DC electromagnet, a tripping DC electromagnet, a mechanical locking device, a tripping device capable of working during system power failure and a touch device. The tripping device capable of working during system power failure is provided with a capacitor. The capacitor is connected to a circuit. When system power failure occurs, an XTA press button is pressed down. Tripping coil discharging is conducted through the capacitor, so that tripping is realized. If a capacitor discharging circuit loses efficacy, tripping can still be realized through touching the touch device manually or mechanically. By using the no-voltage maintaining contactor provided by the utility model, a shortcoming that a coil consumes a large amount of electric energy since the coil needs to be kept in an energized state all the time in order to keep a prior AC contactor in a working state is overcome. And the no-vo