In response to new safety measures that require passenger elevators to have double redundant braking systems, Ogura Industrial Corp. has developed the double MNB brake for commercial elevators.

The MNB consists of two identical brakes mounted on one adaptor flange. The brakes are holding only, so when they are required to come on, both operate simultaneously. In the event one of the brakes has a problem, the other is designed to handle the required torque load. Both brakes have limit switches to indicate when the brake is either engaged or disengaged.