KSB LC — Surge Protection Device

DynaShield® KSB LC Surge Suppression

The KSB LC series designed for use at LPZ 0A-2 or higher to protect 2 wire unbalanced analog circuits, such as 4-20 mA loops, 110 V telephone, ADSL, or ISDN applications. These SPDs offer convenient DIN rail mounted base with replaceable suppression protection modules.

  • Hybrid design for LPZ 0A-2
  • Slim 12 mm wide DIN rail mount
  • Common mode protection
  • Excellent voltage protection level
  • Fast response
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DynaShield Applications

ALLTEC’s Protection Pyramid depends on DynaShield® products to support its comprehensive facility framework. The second tier of protection diminishes the significance of random high-energy, short-duration electrical power transients through properly installed surge protective devices. These occurrences are typically caused by atmospheric phenomena (such as lightning strikes), utility switching, inductive loads, and internally generated overvoltages. You can view typical installation locations in the application maps to the right by locating the numbers 5 and 6.

Model KSBT 12 V SC KSBT 24V SC KSBT 46V SC KSB 100V SC
Tested to IEC 61643-21:2000; YD/T 1542-2006; GB 18802.21-2004
Number of Ports 2
Technology Hybrid Silicon Diode & Gas Discharge Tube
Protection modes Common mode; 2 wire signal with ground
Nominal Voltage UN 12 V 24 V 48 V 110 V
Nominal Current UL 0.5 A 0.5 A 0.5 A 10.5 A
Maximum Continuous Operating Voltage UC 14 V (9.5 V~) 33 V (23 V~) 55 V (38.5 V~) 170 V (120 V~)
Nominal Discharge Current IN (8 x 20 μs) per line 5 kA
Nominal Discharge Current Total
IN (8 x 20 μs)
10 kA
Voltage Protection Level at IN (L-L) ≤ 55 V ≤ 100 V ≤ 175 V ≤ 500 V
(L-PE) ≤ 40 V ≤ 65 V ≤ 100 V ≤ 270 V
Voltage Protection Level at 1 kV/μs (L-L) ≤ 36 V ≤ 90 V ≤ 160 V ≤ 460 V
(L-PE) ≤ 19 V ≤ 45 V ≤ 80 V ≤ 230 V
Capacitance (L-L) 1.2 nF 0.5 nF 0.3 nF 0.2 nF
(L-PE) 2.4 nF 1 nF 0.6 nF 0.4 nF
Bandwidth 2.5 MHz 6 MHz 10 MHz 16 MHz
Series Impedance 1.8 Ω
Response Time ≤ 5 ns
Location Category Indoor Only
Method of Mounting Fixed 35 mm DIN rail, Reference EN 50022/DIN46277-3
Dimension (H x W x D) 90 mm x 6 mm x 63 mm (3.6” x 0.2” x 2.5”)
Weight (Max) 0.05 kg (0.1 lb)
Maximum Wire Size Multistrand 2.5 mm2 (#12 AWG)
Operating Temperature -40°C to +80°C
Relative Humidity ≤ 95% noncondensing
Altitude ≤ 3000 m
Enclosure Protection Level IP 20
Housing Inflammability Rating Thermoplastic, UL 94 V-0
Housing Inflammability Rating CE (LVD, EMC)

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