C25L3

What type of device is this?

This is a circuit breaker basic frame designed for power distribution applications. It is a fixed-mount ComPacT NSX250L frame intended to be used as the core breaker body rather than as a fully equipped protective device on its own.

Is this supplied with a trip unit?

No. This version is supplied without a trip unit, so it is a basic frame only. If you are specifying C25L3 for a panel or switchboard application, a compatible trip unit would need to be selected separately where required.

How many poles does it have?

It is a 3-pole unit, making it suitable for three-phase distribution arrangements where a three-pole breaker frame is needed.

What is the frame current rating?

The frame current rating is 250 A at 40°C. This identifies the breaker frame size and helps when matching it to the intended installation and protection setup.

What is the rated operational voltage?

The rated operational voltage is up to 690 V AC at 50/60 Hz, in accordance with IEC 60947-2.

What short-circuit breaking capacity does it offer?

This unit provides high breaking performance, including 150 kA at 220/240 V AC and 380/415 V AC, 130 kA at 440 V AC, 70 kA at 500 V AC, 50 kA at 525 V AC, and 20 kA at 660/690 V AC.

Is it suitable for isolation?

Yes. It is suitable for isolation in accordance with EN/IEC 60947-2, which can be an important requirement in industrial distribution assemblies.

What mounting arrangement does it use?

It is a fixed-mount breaker frame designed for backplate mounting. The connection arrangement is front access for both the upper and lower sides.

What are the overall dimensions?

The overall dimensions are 105 mm wide, 161 mm high and 86 mm deep. The connection pitch is 35 mm.

What insulation and impulse ratings does it have?

The rated insulation voltage is 800 V AC and the rated impulse withstand voltage is 8 kV. These values help define the unit’s electrical robustness within suitable installations.

Which standards and approvals does it meet?

It conforms to IEC 60947-2 and UL 508, with CSA and UL product certifications listed for the device.

What environmental protection ratings does it have?

The unit has an IP40 degree of protection and an IK07 impact protection rating. It also has pollution degree 3 in accordance with IEC 60664-1.

What temperature range is it designed for?

The operating ambient temperature range is -25°C to 70°C, and the storage temperature range is -50°C to 85°C.

What kind of application is it intended for?

It is intended for distribution applications. In practical terms, that means it is designed for use within electrical distribution systems where a high-performance breaker frame is required as part of a broader assembly.

Does it include built-in protection?

No. The protection type is listed as without protection, which reflects that C25L3 is a basic frame rather than a complete protective breaker configuration.