Struthers-Dunn 219ABAP Relay

Struthers-Dunn 219ABAP Relay is a four-contact plug-in relay from the 219 Series, configured to switch two normally open and two normally closed circuits in a single compact package for control panels and safety interlocks. The ABAP variant sits in Struthers-Dunn’s industrial and nuclear plug-in relay family and is designed for reliable service in demanding environments where multiple switching paths are needed in one device. Coil voltage options vary by model, with documented versions including 12 VAC and 120 VAC coil variants (and additional coil options represented within the 219 family). The relay carries a current rating of up to 10 A and uses a 12-pin plug interface with a polycarbonate cover, aligning with Struthers-Dunn’s standard plug-in relays for quick panel mounting and socket compatibility. In the broader 219 Series, nuclear-qualified configurations exist and have been tested under IEEE 323 seismic and radiation conditions, offering added confidence for safety-critical or high-reliability applications. Common use cases include industrial control panels, process automation, signaling circuits, and interlocks in power generation systems where a compact relay with multiple switching paths can simplify wiring and improve reliability. The ABAP designation identifies the 2NO/2NC arrangement, enabling straightforward substitution for compatible Struthers-Dunn relays in existing equipment while maintaining the proven performance characteristics of the 219 family.