645S Series - Solid State On / Off 10 - 75 Amp $ 64 E52197 The 645S series of solid state relays uses back to back SCRs for on/control of three phase loads. Operation is three pole normally open. Inputs can be AC or DC operated. Load currents can range from 10 to 75 amps and up to a nominal voltage of 480VAC. Both random turn on or zero cross construction is available. GENERAL SPECIFICATIONS (@ 25 C) Input Characteristics Input Voltage Must Release Voltage Maximum Input Current Reverse Polarity Protection DC Input AC Input 3 - 32VDC 1VDC 80mA Yes 90 - 280 VAC 10VAC 30 mA N/A Output Characteristics 10 Amp 25 Amp 40 Amp 50 Amp 75 Amp Rated Load Current (rms) Min. Load current to maintain on Non-Repetitive Surge Current (1 cycle) Maximum I2T for Fusing (Asquared sec) Suggested Heatsink C/W Load Voltage Range Frequency Range Peak Blocking Voltage Maximum Rate of Rise Off State Voltage (dv/dt) Max. Off state leakage current (rms) Max. On State Voltage Drop Maximum Turn-On Time @ 60 Hz Maximum Turn-Off Time @ 60 Hz 10A 100mA 80A 25A 120mA 80A 40A 250mA 800A 50A 250mA 520A 75A 250mA 1150A 41A2 S 510A2 S 3745A2 S 1035A2 S 2600A2 S 1.0C/W 50 to 480VAC 47 to 63 Hz 800 to 1200 250V/uS 0.14C/W 50 to 480VAC 47 to 63 Hz 800 to 1200 300V/uS 10mA 10mA 10mA 10mA 10mA 1.6VAC 8.3mS 8.3mS 1.6VAC 8.3mS 8.3mS 1.6VAC 8.3mS 8.3mS 1.8VAC 8.3mS 8.3mS 1.8VAC 8.3mS 8.3mS 0.14C/W+FAN 0.14C/W+FAN(2) 0.14C/W+FAN(2) 50 to 480VAC 50 to 480VAC 50 to 480VAC 47 to 63 Hz 47 to 63 Hz 47 to 63 Hz 800 to 1200 800 to 1200 800 to 1200 475V/uS 500V/uS 500V/uS Miscellaneous Characteristics Dielectric Strength I or O to case Operating Temperature Range Storage Temperature Range Weight Input Terminal Size Output Terminal Size 3/15 4000Vrms -30 to 80C -40 to 100C 320g M3.5 M4 www.struthers-dunn.com (843) 664-3303 Motor Relays 15 - 75 Amp Outline Dimensions Solid State On/Off Wire Diagram Section 3 Dimensions Shown in inches & (millimeters) 4.14 (105.1) L1 L2 L3 .75 (19.1) 3.72 (94.6) 1.29 (32.8) .93 (23.5) .21 (5.3) 440VAC F1 R F2 F3 S 2.18 2.93 (55.4) 1.88 (74.6) (47.7) .83 (21.6) T + U V .02 (.5) O .50 (12.7) O .21 (5.3) W Motor 3 1.17 (29.7) Derating Curve 80 75 70 65 60 645 S Z or R 4 10 3-32VDC Series 645 Switching SCR - CODE S 55 Load current (Amps) Ordering Code 50 45 40 35 30 Turn on Zero cross - CODE Z Random turn on CODE R 25 20 15 Load Voltage 480VAC - CODE 4 10 Maximum Load Current 10, 25, 40, 50, 75 (Amp) 0 10 20 30 40 50 60 70 80 Maximum ambient temperature (C) Input Voltage 3-32VDC 90-280VAC www.struthers-dunn.com (843) 664-3303 3/16