Load-break switch 3LD3, Iu 40 A main switch 3-pole + N rated operating power at AC-23 A at 400V 15.0 kW distribution board installation basic switch without toggle drive with auxiliary switch 1OE+1S The main and emergency stop switch 3LD for safe shutdown of loads in a wide variety of environments. The application possibilities of the 3LD3 mains disconnection devices are diverse. After mains disconnection, they ensure the safe disconnection of all electrical equipment, for example switching three-phase motors, but also air conditioning and ventilation systems. 3LD3 are also predestined for use in control or switch cabinets, especially for applications in small machines (e.g. saws, compressors, pumps, concrete mixers, drilling machines, milling machines and woodworking machines). The Siemens 3LD main and emergency stop switches are characterized by: 1. Modular design, quick and easy installation of auxiliary switches, N-PE terminal or 4th pole. 2. Versatile thanks to local approvals. 3. One mechanical size for five electrical sizes. 4. Can be used for direct current applications. 5. Mounting types: front mounting, mounting plate, top hat rail. 6. Optimum mains isolation from 16 A to 63 A thanks to the ability to lock the rotary drive. www.siemens.de/schaltgeraete. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and sockets for safe, efficient electrical infrastructure in buildings and industry.
| Property | Value |
| Number of poles: | 4 |
| Rated operating power at AC-23, 400 V: | 19 kW |
| Number of auxiliary contacts as normally closed contacts: | 1 |
| Number of auxiliary contacts as normally open contacts: | 1 |
| Rated continuous current Iu: | 40 A |
| Max. Rated operating voltage Ue at AC: | 690 V |
| Design as an EMERGENCY STOP device: | yes |
| Suitable for floor mounting: | yes |
| Suitable for 4-hole front mounting: | no |
| Design as a maintenance/repair switch: | yes |
| Voltage release optional: | no |
| Suitable for central front mounting: | no |
| Design as main switch: | yes |
| Design as safety switch: | yes |
| Motor drive optional: | no |
| Lockable: | yes |
| Design as reversing switch: | no |
| Rated short-time withstand current Icw: | 1 kA |
| Color of the actuating element: | other |
| Rated operating power at AC-3, 400 V: | 12 kW |
| Rated continuous current at AC-21, 400 V: | 40 A |
| Number of switches: | 1 |
| Rated continuous current at AC-23, 400 V: | 36 A |
| Protection class (NEMA): | other |
