BPFE electrical closing button for MasterPact MTZ1. This button performs the electrical closing of the circuit breaker. Safety functions that are part of the installation's control and monitoring system are taken into account. The BPFE electrical closing button requires an XF diag&,com instantaneous voltage release installed in the circuit breaker. The BPFE is not compatible with a basic XF instantaneous voltage release. Can only be ordered via the online configurator.