C633630S

What type of device is this?

This is a fixed 3-pole switch disconnector designed for power distribution duties. It is part of Schneider Electric’s ComPacT NSX new generation range and is intended to provide reliable switching and isolation in AC systems.

What is this switch disconnector typically used for?

It is commonly used in low-voltage distribution panels, switchboards and industrial electrical assemblies where a robust means of manual switching and isolation is required. It is suited to installations that need a 630 A device for AC distribution circuits.

Is it suitable for isolation?

Yes. The device is rated as suitable for isolation in accordance with EN/IEC 60947-3, making it appropriate for applications where safe circuit separation is required as part of the equipment design.

What are the main electrical ratings?

The unit has a conventional free-air thermal current of 630 A at 50 °C, with rated operational current of 630 A in AC-22A and AC-23A utilisation categories across 220 to 690 V AC, 50/60 Hz. Its rated operational voltage is 690 V AC, rated insulation voltage is 800 V, and rated impulse withstand voltage is 8 kV.

How many poles does it have?

It has 3 poles, making it suitable for three-phase applications where all three live conductors need to be switched together.

How is the device operated?

This model uses toggle operation. That gives a straightforward manual switching method for opening and closing the circuit.

How is it mounted and connected?

The switch disconnector is designed for fixed mounting on a backplate. Both the top and bottom connections are front-facing, which can help simplify access within suitable panel layouts.

Does it include a contact position indicator or visible break?

It includes a contact position indicator, so the switching state can be identified on the device. However, it does not provide a visible break.

What are its short-time withstand and making capacities?

The device is rated for 6 kA short-time withstand current for 1 second and also 6 kA for 3 seconds, with 2.32 kA for 20 seconds. Its rated short-circuit making capacity is 330 kA when used with an upstream protection circuit breaker, or 8.5 kA as a switch disconnector alone.

What are the enclosure and impact protection ratings?

It has an IP40 degree of protection in accordance with IEC 60529 and an IK07 impact protection rating in accordance with IEC 62262. These ratings indicate suitability for use in appropriately protected indoor electrical assemblies.

What operating temperatures can it handle?

The operating temperature range is -25 °C to 70 °C, with a storage temperature range of -50 °C to 85 °C. This allows the device to be used in a wide range of industrial and commercial environments when installed in suitable equipment.

What are the physical dimensions and weight?

The device measures 140 mm wide, 255 mm high and 110 mm deep, with a net weight of 5.2 kg. For reference, Schneider C633630S also has a connection pitch of 45 mm.

Which standards does it conform to?

It conforms to EN/IEC 60947-1 and EN/IEC 60947-3. These are key standards for low-voltage switchgear and controlgear, helping specify performance requirements for switch disconnectors used in distribution applications.

Is this a good replacement option for older 630 A ComPact NSX switch disconnectors?

It can be a suitable option where the original installation used an older ComPact NSX630NA 3-pole switch disconnector with matching electrical and mechanical requirements. Schneider documentation identifies C633630S as a replacement for LV432956, so it is often considered when updating that earlier reference.

How durable is the device in operation?

The switch disconnector is rated for 15,000 mechanical operating cycles. Electrical durability varies by duty and voltage, including up to 1,500 cycles at 690 V AC at full current and higher cycle figures at reduced load or lower voltage.