1.1 Function

protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.

NB1 circuit-breakers are used in domestic installation, as well as in commercial and industry electrical distribution systems.

1.2 Selection

Technical data of the network at the point considered:short-circuit current at the circuit-breaker installation point,  which must always be less than the breaking capacity of this device,network normal voltage.

Tripping curves:

B curve (3-5In) 

protection for people and big length cables in TN and IT  systems. 

      C curve (5-10In)

protection for resistive and inductive loads with low inrushcurrent.

      D curve(10-14In)

protection for circuits which supply loads with high inrush current at the circuit closing 

(LV/LV transformers, breakdown lamps).

1.3 Approvals and certificates

Detailed information, please refer to Certificates Table on the last page.\

Specification

Main function - Miniature Circuit Breaker (MCB)

Rated current - 32A

Rated Voltage (AC) - 250V

Poles -1 Pole

Characteristics - C Curve

Short circuit breaking capacity (Icn) - 6kA

Net Height (mm) - 80 mm

Net Width (mm) - 18 mm

Net Depth (mm) - 77.8 mm

Mounting mode - Din Modular

Compliant Standards - IEC60898-1

Primary brand - Chint

Order code / Manufacturer SKU - NB1-63-C63-3P

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