5 A AC solid-state relay, zero-cross switching
The Autonics SRS1-B1205-1 is a socketable signal relay from the SRS1 series, switching AC loads up to 5 A across 90-240 VAC with zero-cross output — meaning the triac turns on only when the AC waveform crosses zero, reducing inrush and EMI from lamp or transformer loads. Input control accepts 4-30 VDC, making it compatible with 5 V, 12 V, or 24 V logic from a PLC or microcontroller output without an external series resistor.
Socketable package, plug-in termination
Mounts into a standard relay socket via plug-in terminals — no soldering required, so field replacement or panel rework is a straight pull-and-replace operation. The SPST-NO (1 Form A) circuit provides a single normally-open contact; the relay closes on input voltage and opens when the input drops below the release threshold.