To protect the operator
To protect the line
To prevent excessive current
To open the circuit
voltage caused by a short circuit
current flow caused by a short circuit
voltage caused by an open circuit
current flow caused by an open circuit
6 amperes
5.5 amperes
5 amperes
4 amperes
high rupturing capacity
high speed of operation
no ageing effect
low rupturing capacity
lighting circuits
heating circuits
motor circuits
wiring circuits