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Compact, fast, flexible
The Ex9M circuit breakers use compact and light-weighted design for easy installation
and space saving, without compromising their excellent performance.
A compact and delicate moulded case circuit breaker - Ex9M1 (160A)
3 pole dimension: 90mm×140mm×81.6mm (W×H×D)
The compact feature of Ex9M circuit breakers does not change with the increase of
frame size current:
The Ex9M circuit breakers use air blow principle to increase the breaking speed of the circuit
breaker, which improves both the breaking capacity and the current limiting capability of the
circuit breakers.
When the circuit breaker cuts off short circuit current, a large amount of gases with high
temperature and pressure will be generated in the arc extinguishing chamber due to arcing; the
larger the short circuit current, the bigger energy these gases contains.
The design of the Ex9M circuit breakers takes these gases with high temperature and pressure
into consideration, and uses unique arc extinguishing chamber and fast operating mechanism
to achieve fast release.
The fast operating mechanism of Ex9M circuit breakers ensures that the moving and fixing
contacts are disconnected before the instantaneous release operates. In the meantime, the
bigger the short circuit current, the more energy the fast operating mechanism obtains, which
enhances release capacity of the circuit breaker so it can cut off higher short circuit current:
The maximum breaking short circuit current of Ex9M series circuit breakers is 150kA
The minimum release time of Ex9M series circuit breakers is <2ms
Model
Frame size rated current (A) Width (mm) Height (mm) Depth (mm)
Ex9M1 (3P)
160
90
140
81.6
Ex9M2 (3P)
250
105
157
91.5
Ex9M3 (3P)
400/630
140
255
118.5
Ex9M4 (3P)
630
195
300
133.5
Ex9M5 (3P)
800
195
300
133.5
Ex9M6 (3P)
1600
210
286
167
The unique zero flashover design of the Ex9M circuit breakers enables user to save
installation space effectively.
Patented fast operation
Ex9M1/2: ≥50
Ex9M3~6: ≥100
Ex9M1/2
: ≥50
Ex9M3~6
: ≥100
The Ex9M circuit breakers can be installed according to the actual needs inside the cabinet.
The circuit breakers can operate normally no matter which installation method is used.
The Ex9M circuit breakers (except residual current protection circuit breakers) support reverse
incoming method. Due to its unique design, there is no need to derate the circuit breaker if
reverse incoming method is used, so that users can truly enjoy the benefits brought by reverse
incoming method.
Features
Features
Compact
Flexible
Fast
Zero flashover
Zero flashover
Zero flashover
Zero flashover
Installation method
Incoming method