SCB ( Surge Protector Circuit Breaker )-SSD ( SPD Specific Disconnector)

In low voltage power systems, a power surge circuit breaker(SCB)-SSD ( SPD Specific Disconnecotor) is an external disconnector used in series with a surge protector (SPD). Surge protector circuit breakers are suitable for AC 50/60hz, 15/20 amp, 230v-400v range of TT, TN, and other power supply systems. The product power frequency action current is less than 3A, (8/20s impulse current can pass through 120kA). All the performance indexes of products exceed miniature surge arrester circuit breakers and fuses, making them the best choice for SPD backup protection. The SCB (SSD) is connected in series on the SPD circuit and has the ability to resist high surges. The T1 level can reach up to 25KA (10/350μs), and the residual voltage is low. The surge protector main breaker can intelligently identify lightning current and power frequency current. When the power distribution system fails, it can trip quickly within 0.1S to protect the SPD from fire.

Features OfSurge Protector Circuit Breaker-SSD ( SPD Specific Disconnector)

1. The SCB (surge protector circuit breaker)-SSD ( SPD Specific Disconnecotor) is specially designed for SPD according to the requirements of GB18802.1/IEC, to solve the problem that when the SPD has power frequency leakage current or working frequency follow current due to deterioration or power frequency overvoltage, The SCB acts quickly to disconnect the SPD from the power frequency distribution system but does not act when the SPD discharges the lightning electromagnetic pulse current; it effectively solves the possibility of serious accidents such as burning and explosion in the application of the SPD, At the same time, it effectively solves the problem of protection dead zone when using a fuse or a circuit breaker as an external disconnecting device. In low-voltage power distribution systems, it is an ideal companion device for voltage-switching SPDs and voltage-limiting SPDs.

Note: It is forbidden to connect other loads at the end of the SCB.

Specification OfSurge Protector Circuit Breaker-SSD ( SPD Specific Disconnector)

Models	TD-HA 15	TD-HA25	TD-HA50	TD-HB 20	TD-HB 40	TD-HB 60	TD-HB 80	TD-HB 100	TD-HB 120
Test Standard	T1 T2
Normal Voltage	230/400V AC
Nominal discharge current（8/20μs）In				10	20	30	40	50	60
Maximum discharge current（8/20μs）Imax				20kA	40kA	60kA	80kA	100kA	120kA
Maximum discharge current（10/3500μs）Iimp	15KA	25KA	50KA
Frequency	50/60Hz
Rated short-circuit current capability Icn	100kA	100kA	100kA	15kA	30kA	50kA	50kA	100kA	100kA
Matched SPD	Iimp15kA	Iimp25kA	Iimp50kA	Imax20kA	Imax40kA	Imax60kA	Imax 80kA	Imax100kA	Imax120kA
Powerfrequency short circuit operating current Id	3A
Powerfrequency breaking times Tcn
Product width dimension	18cm	36cm		18cm			36cm
Power frequency breaking times	1000 times
IP Grade	IP20
Remote Control	Option
Working Temperature	25～＋75℃
Number of pole	1P/2P/3P/4P

Dimension of Surge Protector Circuit Breaker-SSD ( SPD Specific Disconnector)

Diagram OfSCB SPD Circuit Breaker-SSD ( SPD Specific Disconnector)

As a spd supplier,Our company is specialized in researching and producing all kinds of lightning protection products such as power surge protectorseries, intelligent lightning protection system, intelligent surge protector series, and SPD backup protection switch series, professionally design.

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