KSBT SC Series — Surge Protection Device

DynaShield® KSBT SC Surge Suppression

The KSBT SC Series designed for use at LPZ 0B-2 or higher to protect 2 wire unbalanced analog signals typically used in measurement and control circuits such as thermocouples. The SPDs offer convenient DIN rail mounting in a slim 6 mm wide package.

  • Hybrid silicon + GDT design
  • Slim 6 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 12V SC KSBT 24V SC KSBT 48V SC KSB 110V 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) 3.6” x 0.2” x 2.5”
90 mm x 6 mm x 63 mm
Weight (Max) 0.1 lb (0.05 kg)
Maximum Wire Size #12 AWG
Multistrand 2.5 mm2
Operating Temperature -40° F to +176° F (-40° C to +80° C)
Relative Humidity ≤ 95% non-condensing
Altitude ≤ 3000 m
Enclosure Protection Level IP 20
Housing Inflammability Rating Thermoplastic, UL 94 V-0
Certification CE (LVD, EMC)

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