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OVR surge protection
Surge Protective Devices (SPDs), commonly known as surge arresters or transient voltage surge suppressors (TVSS), are critical components for safeguarding electrical and electronic equipment against voltage spikes caused by lightning strikes, switching operations, or grid disturbances. These devices are designed to clamp transient overvoltages a...
Surge Protective Devices (SPDs), commonly known as surge arresters or transient voltage surge suppressors (TVSS), are critical components for safeguarding electrical and electronic equipment against voltage spikes caused by lightning strikes, switching operations, or grid disturbances. These devices are designed to clamp transient overvoltages and divert surge currents to ground, protecting sensitive loads in industrial, commercial, and residential installations. Key technical parameters include nominal discharge current (In), maximum discharge current (Imax), voltage protection level (Up), and response time. SPDs are classified into Type 1 (for direct lightning strikes), Type 2 (for switching surges), and Type 3 (for fine protection at equipment level). They are available in configurations such as single-pole (1P), two-pole (2P), three-pole (3P), and four-pole (4P), with options for plug-in or fixed modules, and often include remote signaling contacts for monitoring.
These devices are deployed in main distribution boards (MDBs), sub-distribution boards (SDBs), and directly at the point of use for critical equipment. Common sectors include industrial automation, telecommunications, data centers, renewable energy systems (solar PV and wind), building management systems, and healthcare facilities. In industrial environments, SPDs protect PLCs, variable frequency drives (VFDs), and motor control centers (MCCs) from voltage transients that could cause downtime or equipment failure. They are also essential in commercial buildings for safeguarding HVAC systems, lighting controls, and security systems.
The OVR series from ABB includes a wide range of SPDs tailored for different applications. Key subcategories include Type 1 (e.g., OVR T1 3P 25-275), Type 2 (e.g., OVR T2 3P 40-275), and Type 1+2 combined devices (e.g., OVR T1-T2 3P 12.5-275). The article code structure typically follows the pattern: OVR [Type] [Poles] [Discharge Current]-[Voltage Rating], where Type indicates the protection class (T1, T2, T1-T2), Poles denotes the number of protected conductors (1P, 2P, 3P, 4P), Discharge Current is the nominal value in kA (e.g., 25, 40, 12.5), and Voltage Rating is the maximum continuous operating voltage in volts (e.g., 275, 440). Accessories like base modules, plug-in cartridges, and remote signaling contacts are also available.
At Electric Automation Network, we offer the complete OVR surge protection portfolio with real-time pricing, up to 65% discount, and express worldwide shipping. Our team of specialized engineers provides personalized technical support to help you select the right SPD for your application, including coordination studies and installation guidance. Each product listing includes detailed technical documentation, datasheets, and compliance certificates (IEC 61643-11, EN 61643-11). Benefit from fast delivery and expert advice to ensure your systems are protected against voltage surges.
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