Specifications: The APW412E is a dual-channel Normally Closed (SPST-NC) PhotoMOS SSR in a DIP-8 through-hole package. Each channel is rated for 400mA at 60V (AC/DC) with a 1Ω on-state resistance. It provides 5000Vrms isolation per channel. Switching times are 500μs (turn-on to open) and 250μs (turn-off to close). It operates from -40°C to 85°C with 1.2-1.4VDC control.

Application Scenarios: Designed for applications requiring two independent fail-safe (normally closed) paths. Ideal for dual safety interlock systems, redundant emergency stop circuits, or watchdog outputs in industrial machinery and medical equipment where two separate loads must default to an "on" state unless actively disconnected.