Comprehensive Protections
Ex9M series power distribution circuit breaker is a switching device that not only can
connect, carry and disconnect currents under normal circuit conditions, but also can
connect, carry (for a period of time) and disconnect currents under specified abnormal
circuit conditions (such as overload or short circuit).
Ex9M series motor protection circuit breaker is applicable to motor feeder circuit
solutions with three elements or two elements. It is used with AC contactor and
thermal relay to guarantee the normal operation of motor and provide isolation,
connection and disconnection, short circuit protection, overload protection, phase
unbalance and phase failure protection.
Ex9ML series residual current (leakage) protection module provides trip protection by
detecting residual current of non-zero vector sum of multiple phases (including neutral
line) and sending trip signal in low voltage power distribution circuit.
Used with circuit breaker, the Ex9M1SD, Ex9M2SD, Ex9M3SD, Ex9M4SD, Ex9M5SD
and Ex9M6SD act as disconnecting switches to provide an obvious discontinuity point
in the circuit.
Power distribution protection
Motor protection
Residual current protection
Switch disconnector
Reliable Quality Assurance
Applicable Standards
AC moulded case circuit breaker
DC moulded case circuit breaker
International standards
National standards
Product standards
IEC 60947-1 (General)
GB/T 14048.1
IEC 60947-2 (Circuit breaker)
GB/T 14048.2
IEC 60947-3 (Switch, disconnector)
GB/T 14048.3
IEC 60947-4 (Motor starter)
GB/T 14048.4
Extreme environment test standards
IEC 60068-2-1 (Low temperature)
GB/T 2423.1
IEC 60068-2-2 (Dry heat)
GB/T 2423.2
IEC 60068-2-11 (Salt fog)
GB/T 2423.17
IEC 60068-2-30 (Damp heat)
GB/T 2423.4
Ultimate Breaking Capacity
There are multiple breaking capacities (I
cu
=I
cs
)
available for each model of circuit breaker, meeting
various protection needs of customers:
Standard applications: standard type (S and N)
Used in residential houses, buildings, public
buildings and industrial plants
Special applications: current limiting type (P)
Used in heavy industry and special industry
High performance applications: high
breaking capacity type (Q and H)
Used in industrial production lines and key
electric equipment
DC applications: DC breaking type (B-H)
Used in photovoltaic power generation
systems, DC power transmission and
distribution systems
150kA
100kA
70kA
50kA
36kA
Ex9M1Ex9M2
Ex9M3 Ex9M4
Ex9M5 Ex9M6
100kA
70kA
50kA
36kA
25kA
Ex9MD1
Ex9MD2
Ex9MD3
Ex9MD4
Ex9MD5
Ex9MD6
B
S
N Q
H
P
S
N Q
H
China Compulsory
Certification
IECEE for Mutual Recognition
of Test Certificates for
Electrical Equipment
European
Community Safety
Certification
certificate