DC switch disconnector for distribution isolation
It is a 3-pole fixed-mount unit with a toggle control and front-front connection, meaning both line and load terminations are accessible from the front of the panel. The visible-break indicator and contact position indicator confirm isolation status at a glance; the part is certified for isolation per EN/IEC 60947-3.
Electrical ratings and withstand capability
Rated insulation voltage (Ui) is 750 V DC, and the impulse withstand voltage (Uimp) is 8 kV — this sets the clearance and creepage design for the DC bus it connects into. The conventional free-air thermal current (Ith) matches the operational current at 630 A, derated to 40 °C ambient. For fault conditions, the short-time withstand current (Icw) is 7.5 kA for 1 second, and the short-circuit making capacity (Icm) is also 7.5 kA with the switch-disconnector alone — no upstream fuse or breaker coordination assumed for that making rating. The IP40 enclosure rating keeps solid objects over 1 mm out; the IK07 impact rating handles 2 J strikes typical of panel access.
The part is specified into the BOM as a drop-in for DC distribution panels requiring a 630 A, 750 V DC isolation point.
Mechanical durability is rated at 5000 cycles; electrical durability is 1000 cycles at rated 750 V DC and 630 A. Class II electrical shock protection means no protective earth connection is required on the device itself — double insulation is built in.
Panel integration dimensions
Fixed mounting on a backplate is specified; the front-front connection arrangement keeps wiring within the panel depth without rear access.