BVT KKS ALD 75 Surge Arrester

Brand: DEHN, Inc.

Energy-coordinated combined lightning current and surge arrester for protecting the rectifier in the protective circuit (red colour).

Plug-in remote signaling contact (break contact) indicates overload (thermal monitoring of the varistors). 

Installation into steel-sheet enclosure recommended. 

A low impulse sparkover voltage is achieved by capacitive control.

Specifications

Brand

Approvals & Certifications

  • GOST

Approvals & Certifications

  • IEC 61643-21, EN 61643-21

Capacitance

  • Capacitance Line-Line & Line-PG: ≤ 2 NF

Connectors

  • Input/Output: Screw

Current

  • A2 Total Alternating Current withstand Capability: 20 A
  • C2 Nominal Discharge Current (8/20 µs) Per Line: 20 KA
  • C2 Total Nominal Discharge Current (8/20 µs): 40 KA
  • D1 Lightning Impulse Current (10/350 µs) Per Line: 3.5 KA
  • D1 Total Lightning Impulse Current (10/350 µs): 7 KA
  • Nominal Current: 12 A

Electrical Connectors

  • Cross-sectional Area for Remote Signalling Terminal: Maximum
  • Cross-sectional Area: Flexible (0.5 to 4 mm²)
  • Cross-sectional Area: Solid (0.5 to 6 mm²)
  • Earthing Via: Screw Terminal

Electrical Contacts

  • Typical of Remote Signalling Contact: Break Contact

Electrical Rating

  • AC Switching Capacity: 250 V / 0.5 A
  • DC Switching Capacity: 125 V / 0.2 A
  • DC Switching Capacity: 250 V / 0.1 A
  • DC Switching Capacity: 75 V / 0.5 A

Enclosure, Body Material

  • ThermoPlastic

Environmental Protection

  • IP20

Frequency

  • Cut-Off Frequency Line-Line: 1 MHz

Mounting

  • 1.378" (35 mm) DIN Rails According to EN 60715

Operating Temperature

  • -40° to 80° C (-40° to 176° F)

Operating Voltages

  • Maximum

Torque

  • Tightening Torque (Terminal): 0.8 Nm

Voltage

  • Nominal Voltage: 70 V
  • Voltage Protection Level Line-Line & Line-PG for Iᵢₘₚ D1 (Uₚ): ≤ 400 V
  • Voltage Protection Level Line-Line at [1 kV/µs C3 (Uₚ)] & Line-PG at [1 kV/µs PG (Uₚ)]: ≤ 350 V

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