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003Z1132 DANFOSS...
Sensor TVM-H 30-70C
Basic element for surge protection device
Surge protection devices (SPDs), also known as transient voltage surge suppressors (TVSS) or lightning arrestors, are critical components in electrical installations designed to protect sensitive equipment from voltage spikes caused by lightning strikes, switching operations, or grid disturbances. These devices operate by diverting excess energy...
Surge protection devices (SPDs), also known as transient voltage surge suppressors (TVSS) or lightning arrestors, are critical components in electrical installations designed to protect sensitive equipment from voltage spikes caused by lightning strikes, switching operations, or grid disturbances. These devices operate by diverting excess energy to the ground when the voltage exceeds a predefined threshold, typically using metal oxide varistors (MOVs), gas discharge tubes (GDTs), or spark gaps. Key technical parameters include nominal discharge current (In), maximum discharge current (Imax), voltage protection level (Up), and response time (typically nanoseconds). SPDs are classified into Type 1 (for direct lightning strikes), Type 2 (for induced surges), and Type 3 (for fine protection at equipment level). They are available in single-pole (1P), two-pole (2P), three-pole (3P), and four-pole (4P) configurations, with rated voltages from 230V to 690V AC and nominal currents up to 100kA. Common mounting styles include DIN rail and panel mount, with IP20 or higher enclosures for industrial environments.
SPDs are deployed across a wide range of sectors and installations. In industrial automation, they protect PLCs, drives, and sensors in control panels and distribution boards. In commercial buildings, they safeguard HVAC systems, lighting controls, and security networks. In renewable energy, SPDs are essential for photovoltaic (PV) systems, wind turbines, and battery storage, where they protect inverters and charge controllers from lightning-induced surges. Telecommunications and data centers rely on SPDs for network switches, servers, and communication lines. Residential applications include protecting smart home devices, entertainment systems, and electrical panels. They are also critical in transportation infrastructure, such as railway signaling and traffic control systems.
Our category includes several subcategories and key article codes. The main subcategories are Type 1 SPDs (e.g., code SPD-T1-25-275, where T1 indicates Type 1, 25 is the nominal discharge current in kA, and 275 is the rated voltage in V), Type 2 SPDs (e.g., SPD-T2-40-385), Type 3 SPDs (e.g., SPD-T3-10-230), and combined Type 1+2 SPDs (e.g., SPD-T12-50-440). Other relevant codes include SPD-PV-1000 for photovoltaic systems and SPD-DC-600 for DC applications. The article code structure typically follows the pattern: SPD-[Type]-[In kA]-[Uc V], where Type is T1, T2, T3, or T12, In is the nominal discharge current, and Uc is the maximum continuous operating voltage.
Partnering with Electric Automation Network ensures you receive genuine, certified surge protection devices with full technical documentation and real-time pricing. Our engineers provide personalized support for selecting the correct SPD based on your system's voltage, risk category, and installation environment. We offer express worldwide shipping, ensuring critical components arrive when needed. With multilingual support and a global logistics network, we streamline procurement for projects of any scale, from small panel upgrades to large industrial installations.
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