 
                                                    
DIN EN IEC 63522-56 VDE 0435-2027-56:2025-11
Electrical relays – Tests and measurements
Part 56: Ball Pressure test
                                (IEC 63522-56:2025); German version EN IEC 63522-56:2025
                                Class/Status:
                                Standard,
                                    valid
                                                                    Released: 2025-11
                                    
                                                                VDE Art. No.: 0400721
                                                            

