Surge Protection Devices for Outdoor Lighting

Our surge protection devices (SPD) are suitable for lightning & surge protection of low-voltage systems, power supplies, communication networks, PV systems and street/outdoor lighting.

They meet the requirements of UL 1449 Forth Edition and IEC/EN 61643-11.

Depending on the design, they can be mounted on DIN rails in control cabinets, combiner boxes or optimized for installation in street lights.

They are fail-safe, have an fault display and a remote signaling contact.

They are robust and well protected against harsh environmental conditions and meet the requirements for high reliability in important areas.

SD05C Series, All-mode


  • Surge Protection Device
  • System Voltage: 120 - 480 VAC
  • Max. Operating Voltage:
    150 - 550 VAC
  • Discharge Current:
    5kA / max. 10kA
  • Modes of Protection:
    see Data sheet

SD10C Series, All-mode


  • Surge Protection Device
  • System Voltage: 120 - 480 VAC
  • Max. Operating Voltage:
    150 - 550 VAC
  • Discharge Current:
    10kA / max. 15/25kA
  • Modes of Protection:
    see Data sheet

SD10C120/240 Series


  • Surge Protection Device
  • System Voltage: 120 - 240 VAC
  • Max. Operating Voltage:
    150 / 300 VAC
  • Discharge Current:
    10kA / max. 15/25kA
  • Modes of Protection:
    UL 1449 Type 1 SPD
Beleuchtung Überspannungsschutzgerät 25kA

SD05K Series, All-mode


  • Surge Protection Device
  • System Voltage: 120 - 347 VAC
  • Max. Operating Voltage:
    150 / 320 / 420 VAC
  • Discharge Current:
    5kA / max. 10kA
  • Modes of Protection:
    see Data sheet

SD10K Series


  • Surge Protection Device
  • System Voltage: 120 - 480 VAC
  • Max. Operating Voltage:
    300 / 320 / 385 VAC
  • Discharge Current:
    10kA / max. 20kA
  • Modes of Protection: 1+1
Beleuchtung Überspannungsschutzgerät 10kABeleuchtung Überspannungsschutzgerät 10kABeleuchtung Überspannungsschutzgerät 20kA 1+1Beleuchtung Überspannungsschutzgerät 25kA UL1449 Type 1 SPD


α Therm


Alpha Therm GmbH - Your specialist for temperature-dependent

electronic components and circuit protection

Phone: [+49] 6202 / 575688 - 0

© 2021 Alpha Therm GmbH

v 2.6

Phone: +49 6202 / 575688 - 0

Home Products Contact About us Shop Imprint Data Protection

Temperature Protection

Temperature Protection

Overload Protection

Overload protection

Surge Protection


Surge protection

Temperature Sensors

Temperature Sensors

Temperature Controller

Temperature controller

Online shop

Download Product Overview

Mechanical Switches

Mechanical switches
Mechanische Schalter

Rectifier & Diodes

Rectifier