Jone Ye
Joyce Lin
Lisa zheng
SM50-400 Magnetic Moulded Case Circuit Breakers For Home
Product Description
SPX SM50-400 series thermal magnetic molded case circuit breakers are designed for use in AC 50/60Hz power distribution networks. The rated insulation voltage of this series is 690V and the rated working voltage is 415V or less. The current range of SM50-400 series molded case circuit breakers is from 250A, 300A, 315A, 350A to 400A, which can meet different load requirements. This makes them very suitable for power distribution and effectively protects lines and power equipment from damage caused by faults such as overload, short circuit and undervoltage. In addition, the SM50-400 series also has excellent thermal magnetic characteristics, which can quickly cut off the current in the event of a transient fault, ensuring the safety and reliability of the system. We are committed to providing customers with high-performance solutions to meet the needs of modern power systems.
The SPX SM50-400 series of Thermal-Magnetic Moulded Case Circuit Breakers Parameter
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Frame(A) |
SM50-400(NF-CW) |
Operating characteristics |
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Rated current in(A) |
250、300、315、350、400 |
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Rated voltage(V) |
AC 400V |
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Rated insulation voltage(V) |
AC 690V |
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Number of poles |
3 |
4 |
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Limited breaking capacity |
C |
S |
H |
C |
S |
H |
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Short circuit interrupting |
25 |
35 |
50 |
25 |
35 |
50 |
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Operate short circuit(kA) AC400V |
15 |
20 |
15 |
15 |
20 |
15 |
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Profile picture |
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a |
258 |
258 |
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b |
140 |
185 |
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c |
153 |
153 |
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Mounting picture |
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d |
195 |
195 |
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e |
45 |
45 |
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f |
8 |
8 |
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Machine life |
4000 |
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Electrical life |
1500 |
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Electrical-operation device(MD) |
● |
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Extemal rotary handle |
● |
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Automatic tripping device |
Thermal-magnetic |
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The SPX SM50-400 series of Thermal-Magnetic Moulded Case Circuit Breakers Feature And Application
*SPX SM50-400 series thermal magnetic molded case circuit breakers are made of environmentally friendly raw materials, and the housing and base meet environmental protection standards.
*The fixed contacts of this series are made of high-quality copper and equipped with silver dots to ensure good conductivity and durability.
*The current range of SM50-400 series is from 250A, 300A, 315A, 350A to 400A, which can meet the needs of different application scenarios.
*The mechanical life of this circuit breaker can reach 4000 times, while the electrical life is 1500 times, ensuring long-term and stable use.
*We offer 3-pole and 4-pole options to suit different power system configurations.
This series of products has thermal magnetic properties, which can quickly cut off the current in the event of a fault to protect the safety of the equipment. The SM50-400 series also provides different types of products such as C type, S type and H type to meet diverse application needs. They can not only protect electrical systems, control machines and equipment, and distribute electricity, but can also be widely used in other occasions related to electrical systems, such as uninterruptible power supply (UPS) power supply, generator protection and control, etc. All products are CE certified to ensure compliance with international safety standards.
SM50-400 series of molded case circuit breaker
Thermal-Magnetic Moulded Case Circuit Breakers Front view
Production process
