Load-break switch in a new design Iu=63A, Ue=690V, 3-pole with door operator 8UC7 Handle dark gray/blue-green Basic cover light gray The 3KA load-break switches up to 1000A for low-voltage circuits. The 3KA load-break switches are used as main, EMERGENCY STOP, repair and network changeover switches in distribution boards for residential and commercial buildings as well as industrial switchgear. As 3- and 4-pole versions, they guarantee the switching on and off of the specified rated current under load. At the same time, they form a safety isolating function and distance in all low-voltage circuits. The Siemens 3KA load-break switches are characterized above all by: 1. The possibility of being inserted into the sides or rear of the control cabinet. 2. Extensive accessories that can be flexibly retrofitted at any time. 3. Compliance with the provisions of IEC 60947-3 and 0660 Part 107, as well as the Machinery Directive EN 60204-1. 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: | 3 |
| Rated operating power at AC-23, 400 V: | 30.0 kW |
| Current: | 63 A |
| Max. Rated operating voltage Ue at AC: | 690 V |
| Design as EMERGENCY STOP device: | yes |
| Protection class (IP), front: | IP00 |
| Connection type main circuit: | Screw connection |
| Device design: | Built-in device, fixed installation technology |
| Design of the actuating element: | other |
| Suitable for floor mounting: | yes |
| Conditional Rated short-circuit current Iq: | 50.0 kA |
| Integrated motor drive: | no |
| Suitable for front mounting 4-hole: | no |
| Version as maintenance/repair switch: | yes |
| Voltage release optional: | no |
| Suitable for front mounting central: | no |
| Suitable for intermediate installation: | no |
| Suitable for Distribution board installation: | no |
| Version as main switch: | yes |
| Version as safety switch: | yes |
| Motor drive optional: | no |
| Lockable: | yes |
| Version as reversing switch: | no |
