1.General

1. Selection

Technical data of the network at the point considered:the earthing systems (TNS,TNC),short-circuit current at the circuit-breaker installation point,which must always be less than the breaking capacity ofthis device,Network normal voltage.

Tripping curves:

B curve(3-5In)

protection for people and big length cables in TN and ITsystems.

C curve (5-10In)

protection for resistive and inductive loads with low inrushcurrent.

2 Approvals and certificates

Detailed information,please refer to Certificates Tableon the last page.

2.Technical data

UB MCB is of high current limiting perfor mance to limit the destruction energy due to short circuit to the greatest extent.

2.3 Temperature derating

The maximum permissible current in a circuit breaker depends on the ambient temperature where the circuit breaker is

placed. Ambient temperature is the temperature inside the enclosure or switchboard in which the circuit breakers are installed.

The reference temperature is 30℃

3. Overall and mounting dimensions(mm)