Single Phase AC-AC High Voltage 175A 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, which use moving parts to establish or break connections, a solid-state relay operates using semiconductor components like thyristor or triacs. The “high voltage” designation signifies that this particular relay is engineered to handle elevated voltage levels commonly encountered in industrial or specialized applications.
The “175A” specification indicates its maximum current-carrying capacity, meaning it can manage up to 175 amperes of current. This makes it well-suited for controlling extremely heavy loads in situations that demand precise and rapid switching. 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 find extensive application in areas like industrial automation, heating systems, motor controls, and other scenarios where accurate and robust switching of high-power AC loads is required.
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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