Single Phase AC-AC High Voltage 205A Solid State Relay (SSR) is an advanced electronic device designed to control the flow of alternating current (AC) in a single-phase electrical system. Unlike traditional mechanical relays that rely on moving parts, a solid-state relay operates using semiconductor components like thyristor or triacs. The “high voltage” designation indicates that this specific relay is engineered to handle elevated voltage levels commonly encountered in industrial or specialized applications.
The “205A” specification denotes its maximum current-carrying capacity, meaning it can manage up to 205 amperes of electrical current. This makes it particularly suitable for controlling extremely heavy loads in situations where precise and swift switching is crucial. Solid-state relays are favoured for their longevity, reliability, and the absence of arcing, which can occur in mechanical relays and lead to wear over time. They are extensively used in applications such as industrial automation, heating systems, motor controls, and various other scenarios where accurate and robust switching of high-power AC loads is a necessity.
These headings can help you choose SSRs based on their key attributes
| Model | A Rating | Input | Output | Control Voltage | Control Current Range | Pick-up Voltage | Turn-on (max) | Turn-off (max) | Drop Out Voltage | Input Resistance | Current Range with proper heat sink(IT) | Surge Current non-repetitive t = 10msecs (ITEMS) | Voltage Drop @ Current (VTM) | Voltage Range (VRMS) | Over Voltage Rating (PIV) Transient Peak | Off-state leakage current @ voltage – (IDRM) | Holding current (IH) | Dv/Dt @Voltage (out) | I2T Fusing I2t (10 ms) (Value In Square) | Frequency Range | Dielectric Strength | Galvanic Separation (Input to Output to Base) | Weight | Storage Temp. | Junction Temperature |
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