一、Product Overview
DL7-63 series high breaking miniature circuit breaker (MCB), in line with GBI0963, IEC898 standards, this product has reliable performance, accurate protection characteristics, high breaking capacity, small size, can be used as a conductor in low-voltage electrical systems, switchgear, electrical equipment, etc. Overload and short circuit protection.
The miniature circuit breaker uses a high-precision bimetal material as an inverse time thermal protection element with precise protection characteristics. The operating mechanism is a connecting rod mechanism with a small operating torque, reliable decoupling, and high susceptibility. The inertia of the contact system is small, which ensures the breaking speed of the contact and is conducive to the extinguishing of the arc. The circuit breaker adopts a large arc-extinguishing chamber and the arc-arranging plate adopts a large arc to reduce the resistance of the arc movement and prevent the arc from stagnating in the middle. In many cases, the arc can be rapidly cut, cooled, and extinguished; the multi-layered steel grille is used for the arc-jet opening. Ensure that the arc is further cooled and extinguished. Basically guaranteed zero arcing. Effectively prevent short circuit between poles. The arc extinguishing chamber uses organic materials on both sides of the arc plate. This material generates a large amount of gas at high temperatures, can effectively control the direction of arc injection, and can also serve to cool the arc. The arc-shunting plate also effectively prevents the arc from burning on the casing, and ensures that the insulation terminal of the product has a box-type structure, regardless of whether the soft or rigid wires can be firmly connected.
二、 the scope of application
DL7-63 series high breaking miniature circuit breaker has the characteristics of advanced structure, high performance and reliable breaking capacity, beautiful appearance and small size. The shell is made of impact-resistant, highly flame-retardant material, suitable for AC rated voltage 230v/400v50/60Hz. Rated current up to 63A line for overload and short circuit protection. It can also be used as an infrequent operation conversion of the line under normal circumstances. Mainly used in industrial, commercial, high-rise buildings and residential and other places.
三、the model and meaning
四、classification
Divided into three types according to use: B, C type lighting protection • D type power protection.
According to the number of poles can be divided into: 1P, 1P + N, 2P, 3P, 3P + N, 4P.
According to the rated current range: 6,10,16,20`,25,32,40,50`,63A.
五、Main technical parameters
Rated voltage (Ue) 230/400V; 50/60Hz
Rated breaking capacity (lCn) 10KA IEC898 (6 ~ 63A) 15KA lEC947-2 (6 ~ 63A)
DC short circuit breaking capacity: max 48v 1OKA unipolar 250v 6KA unipolar
Shell protection class: lP40
Mechanical life: less than 20000 cycles
Electrical life: less than 8000 times off
Trip characteristics: B, C, D
六、time-current action characteristics
七、the choice of small circuit breaker tripping characteristics
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Trip characteristics
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Miniature Circuit Breaker
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Rated current
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Application area
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B
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DL7一63
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Characteristic B is used for small circuit breakers that require faster tripping and less short-circuit currents to be used. Characteristic 8 allows passing peak current<3|n。
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Transformer secondary circuit protection
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C
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DL7一63
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Characteristic C applies to most electrical circuits. It allows the load to pass a higher short-time peak current and the miniature circuit-breaker does not operate. In fact, characteristic C allows the peak current to pass up to 5 times the rated current.(51n)。
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General electrical circuit protection
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D
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DL7一63
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Characteristic D is recommended for high peak current (10ln) switching devices. For example, it can be used once for a transformer. Money Road and solenoid valves, motor starting and other protection.
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Transformer primary circuit protection
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八、 installation dimensions
九、ordering instructions
1, product model, name; 2, pole number; 3, rated current; 4, order quantity
