If the set current value is exceeded in the first phase, the first group of loads in the first control channel will be disconnected. If this value is exceeded again, the next group in the same control channel will be disconnected after 3 seconds. The group of loads will only be reconnected once the current has fallen below the set limit, reduced by the current drop recorded during the last disconnection of the group. The function is the same for the second and third phases. The current setting ranges from 1 to 120 A in 1 A increments; the current transformers are integral to the controller. This product range is designed for buildings where single-phase loads predominate. For higher currents, the HJ 31x series with separate measuring transformers can be used. In residential buildings, installing the regulator can result in significant savings on the cost of the electrical connection and on standing charges, as the main circuit breaker can be installed upstream of the electricity meter with a rating one or two sizes lower than would correspond to the total power consumption of the appliances in the building.
