NB1-63 Series Circuit Breakers 6kA

1.1 Function

The primary functions of Chint NB1-63 MCB are as follows:

• Protection of circuits against short-circuit currents.
• Protection of circuits against overload currents.
• Control of electrical circuits through switching.
• Providing isolation when required.

It's important to note that NB1-63 circuit-breakers find applications not only in domestic installations but also in commercial and industrial electrical distribution systems.

1.2 Selection

When selecting a circuit-breaker, consider the following factors:

• Technical data of the network at the specific point of installation, including the short-circuit current, which should always be less than the breaking capacity of the device.
• The network's normal voltage.

There are different tripping curves available for circuit-breakers, each designed for specific purposes:

• B curve (3-5In): Suitable for the protection of people and long cable lengths in TN and IT systems.

• C curve (5-10In): Ideal for protecting resistive and inductive loads with low inrush current.

• D curve (10-14In): Designed for the protection of circuits supplying loads with high inrush current during circuit closing, such as LV/LV transformers and breakdown lamps.

1.3 Approvals and Certificates

For detailed information regarding approvals and certificates for circuit-breakers, please see below.

Manufacturer's Website

Datasheet

Warranty Policy