There are seven frame sizes in the line of circuit breakers. Each frame size has its own accessories. **Accessories for VA-99M with thermal-magnetic trip**: * Emergency contact * Auxiliary and emergency contacts * Undervoltage release * Shunt trip * Terminal extensions * Manual rotary operator * Electric actuator * Mechanical interlock **Installation method**: additional trips and contacts are installed into sockets in the switch housing located under the fascia panel. Conductors from them are laid into the side grooves of the housing, having previously pushed the fascia panels up. Assembly is performed in reverse order. For **VA-99M with electronic trip**, emergency and auxiliary contacts are available.