Struthers-Dunn PM-17AY-120 Electromechanical Relay

The Struthers-Dunn PM-17AY-120 is a four-form-C (4PDT) open‑style power relay in the PM Series, designed for multi‑circuit control in industrial equipment. It uses a 120 VAC coil with a nominal coil power of 14 VA (AC) or 4.4 W (DC) and delivers a 35 A resistive rating at 120/240 VAC, with 20 A maximum on 28 VDC loads. Four Form‑C contacts (4PDT) handle coordinated switching, including a motor load rating of 1.5 hp at 240 VAC, and a contact resistance up to 100 milliohms max at 6 VDC. Operating and release times are specified as up to 40 ms and 30 ms respectively, enabling reliable response in timed control applications. Dielectric strength comprises 1500 Vrms across open contacts and 2000 Vrms between mutually insulated points, with insulation resistance of 1000 MΩ at 500 VAC. The relay operates over a temperature range of -34 to 74 °C and stores from -40 to 105 °C. Electrical life is rated at 100,000 cycles and mechanical life at 2,000,000 cycles. Coils are available in AC and DC variants, with coil input tolerances of ±% (AC 85–110% of nominal; DC 80–110% of nominal) and a 10% drop‑out specification. Weighing 14.9 oz (379 g), the PM-17AY‑120 uses standard screw terminals (#M4, 7.0 x 5 mm) with an optional.250" quick‑connect option and an optional dust cover (PM Dust Cover). Certifications include UL Recognized, UL Listed, and CSA, with RoHS compliance noted.