RNSH-7S Series

The ROONSH open circuit changeover switch in RNSH-7S series of the USA is committed to key power supply occasions with higher requirements and is widely used in low voltage dual power supply changeover in airports, hotels, communications and hospitals, etc. ROONSH uses the self-developed and long-term proven electromagnetic coils with high performance as the changeover mechanism, which enables each automatic changeover switch with rated capacity to have fast changeover capability and fast and stable changeover speed. The main contact has excellent on-load changeover capability, and whether the load is a motor or an electronic frequency converter, the ROONSH switch can easily switch any load, and it is the real dual-switching changeover switch of the industry with electromagnetic coil operation and mechanical interlocking.

The Features of the Product:

The capacity is 630A-6300A;

Having coil drive mechanism, and instantaneous excitation operation;

The contact changeover time is less than 100ms, and the changeover power-off time is less than 50ms;

Having dual switching and mechanical holding devices without external interlocking mechanism;

Use of Load: having AC-33A as the highest type and the mixed type load;

Designed to have large capacity and double contacts: Equipped with main contact and arc-suppression contact;

The generation set is switched with visible disconnection points to ensure no reverse power transmission;

Intermediate zero position is provided to eliminate the generator effect of large-capacity motor load;

Neutral line is switched in the mode of "being first connected and then disconnected" to prevent neutral line from being suspended instantly when the phase line is electrified;

Neutral line and phase line are both equipped with arc suppression chambers.

Standards and Certification

GB/T14048.11 in China, UL1008 in the USA, and IEC60947-6-1in Europe