C10N4

What type of device is this?

This is a fixed-mount circuit breaker basic frame designed for power distribution applications. It is a 4-pole unit in the ComPacT NSX100N range with a 100 A frame rating, and it is supplied without a trip unit.

Does this unit include built-in protection?

No. This basic frame is supplied without a trip unit, so it does not provide overcurrent protection on its own until a compatible trip unit is fitted.

How many poles does it have?

It has 4 poles, making it suitable for applications where four-pole switching or isolation is required. The neutral position is on the left.

What is the rated current and operating voltage?

The frame is rated at 100 A at 40°C and is intended for AC networks at 50/60 Hz. Its rated operational voltage is up to 690 V AC in accordance with IEC 60947-2.

What short-circuit breaking capacity does it offer?

This frame offers high breaking performance for its class. For the C10N4, the rated ultimate short-circuit breaking capacity reaches 50 kA at 380/415 V AC and 440 V AC, 36 kA at 500 V AC, 35 kA at 525 V AC, 10 kA at 660/690 V AC, and 90 kA at 220/240 V AC under IEC 60947-2.

Is it suitable for isolation duties?

Yes. The unit is suitable for isolation in accordance with EN/IEC 60947-2, which makes it appropriate for installations where safe disconnection is required as part of the design.

What are the mounting and connection arrangements?

This is a fixed-mount unit intended for backplate installation. It has front connections on both the upper and lower sides, with a connection pitch of 35 mm.

What are the overall dimensions?

The unit measures 140 mm wide, 161 mm high and 86 mm deep. These dimensions can be useful when checking panel space or planning a replacement.

What environmental ratings does it have?

It has an IP40 degree of protection and an IK07 impact rating. The pollution degree is 3, and the operating temperature range is from -25°C to 70°C, with storage from -50°C to 85°C.

Which standards and approvals does it meet?

The device is designed in line with EN/IEC 60947-2 and carries UL and CSA product certifications. This helps make it a suitable option for a wide range of industrial and commercial panel applications.

How durable is the unit in service?

The mechanical durability is rated at 50,000 operating cycles. Electrical durability depends on the operating conditions, with ratings including 10,000 cycles at 690 V AC at full rated current and up to 50,000 cycles at 440 V AC at half rated current.

What should be checked before selecting this unit for a replacement?

Key points to check include the required number of poles, frame size, voltage rating, breaking capacity, mounting arrangement, connection layout and compatibility with the intended trip unit. As this is a basic frame only, confirming the correct trip unit arrangement is especially important.