Specifications: The APY414E is a high-voltage Normally Closed relay in a compact DIP-4 form factor, designed for rapid disconnection in safety-critical medium-voltage paths. It handles 120mA at 400V (AC/DC) with a 20Ω on-state resistance and is protected by 5000Vrms of isolation. Its performance hallmark is the extremely fast 20μs opening time, paired with a 500μs closing time. Built for harsh industrial and medical environments, it operates from -40°C to 85°C and is activated by a standard 1.2-1.4VDC input.

Application Scenarios: This relay is engineered for scenarios where a high-voltage circuit must be instantly interrupted for protection. It is critically employed in X-ray generator interlock systems, as a fast-acting crowbar device in high-voltage power supplies to clamp overvoltages, in patient-connected medical equipment for immediate isolation upon fault detection, and in industrial process control where a rapid shutdown of a high-voltage process (e.g., plasma etching) is required for safety. Its fast response and high isolation make it a key component in risk mitigation.