| Number of auxiliary contacts as normally open contact | 0 | 
                                                                    
                                        | Number of auxiliary contacts as normally closed contact | 0 | 
                                                                    
                                        | Number of auxiliary contacts as change-over contact | 0 | 
                                                                    
                                        | Number of switches | 1 | 
                                                                    
                                        | Interlockable | Yes | 
                                                                    
                                        | Motor drive integrated | No | 
                                                                    
                                        | Type of electrical connection of main circuit | Other | 
                                                                    
                                        | Version as emergency stop installation | No | 
                                                                    
                                        | Type of control element | Other | 
                                                                    
                                        | Colour control element | Black | 
                                                                    
                                        | Suitable for floor mounting | No | 
                                                                    
                                        | Suitable for front mounting 4-hole | Yes | 
                                                                    
                                        | Suitable for front mounting centre | No | 
                                                                    
                                        | Suitable for distribution board installation | Yes | 
                                                                    
                                        | Suitable for intermediate mounting | No | 
                                                                    
                                        | Max. rated operation voltage Ue AC | 750 V | 
                                                                    
                                        | Motor drive optional | No | 
                                                                    
                                        | Voltage release optional | No | 
                                                                    
                                        | Device construction | Built-in device plug-in technique | 
                                                                    
                                        | Rated permanent current at AC-21, 400 V | 63 A | 
                                                                    
                                        | Version as reversing switch | No | 
                                                                    
                                        | Rated permanent current at AC-23, 400 V | 45 A | 
                                                                    
                                        | Degree of protection (NEMA) | 1 |