Struthers-Dunn PM17AY24 Feeder Relay

Struthers-Dunn PM-17AY-24 is a four-pole double-throw (4PDT) open‑style power relay in the PM Series, designed to switch multiple high‑current AC circuits from a single compact unit. It uses a 24 VAC coil and offers screw terminals for robust wiring, with plug‑in/socket variants and a dust‑cover option for panel installations. Each of the four poles can handle substantial loads, with a nominal contact rating up to 35 A per pole and a nominal contact voltage up to 277 VAC, making it suitable for multi‑circuit control in industrial equipment, HVAC panels, and motor‑load applications. This relay belongs to the Struthers‑Dunn PM Series, the lineage of Potter & Brumfield relays originally acquired in 2003, and is commonly used where reliable multi‑pole switching is required in a compact form factor. Its open‑style construction and accessible terminals support straightforward wiring and inspection in control cabinets and equipment racks.