Yueqing Lovadon Electric Co., Ltd.

General

1. Application: For protecting cables and equipments against overload and short circuit.

2. General rules for choosing MCB.

a. Technical data of the network at the point considered:

The earthing systems,short-circuit current at the circuit breaker installtion point, which must always be less 

than the breaking capacity of this device, network normal voltage.

b. There are 3 curve characteristics for magnetic operation:

B curve (3-5 In) protection and control of the circuits against length cables in TN and IT systems.

C curve (5-10 In) protection and control of the circuits against overloads and short-circuits;protection for 

resistive and inductive loads with low inrush current.

D curve (10-20In) protection and control of the circuits against overloads and short-circuits.

Technical Parameters

Dimensions