MCST1250AS

Control Relays DataSheet MCS Series Microprocessor based soft-start / soft-stop controller Ratings from 25A to 90A 48-530 VAC Low-voltage, current, or potentiometer control Output status indicator Adjustable ramp rates PRODUCT SELECTION Line Voltage 25 A 50 A 90 A 120 Vrms MCST1225 MCST1250 MCST1290 240 Vrms MCST2425 MCST2450 MCST2490 480 Vrms MCST4825 MCST4850 MCST4890 AVAILABLE OPTIONS Analog Input A: 0-5 VDC B: 0-7 VDC Line Voltage C: 0-10 VDC 12: 90-140 Vrms D: 4-20 mA 24: 180-280 Vrms E: Potentiometer 48: 300-530 Vrms Series ST 24 25 C S MC Product Type Ramp Time On/Off Rated Current ST: Soft Start S: 100ms-1 sec 25: 25 Amps SP: Soft Stop M: 1 sec.-10 sec 50: 50 Amps SS: Soft Start/Stop 90: 90 Amps Required for valid part number For options only and not required for valid part number OUTPUT SPECIFICATIONS (voltage) Description 120 VAC 240 VAC 480 VAC Operating Voltage (47-63Hz) Vrms 48-140 180-280 300-530 Transient Overvoltage Vpk 400 600 1200 Maximum Off-State Leakage Current Rated Voltage mArms 5 7 12 Minimum Off-State dv/dt Maximum Rated Voltage V/sec 200 200 200 OUTPUT SPECIFICATIONS (current) Description 25 A 50 A 90 A Maximum Load Current Arms 25 50 90 Minimum Load Current mArms 150 150 150 Maximum Surge Current (16.6ms) Apk 250 625 1200 Maximum On-State Voltage Drop Rated Current Vpk 1.6 1.6 1.6 Thermal Resistance Junction to Case (Rjc) C/W 1.02 0.63 0.28 Maximum I t for Fusing (8.3 msec) Asec 260 1620 6000 Do not forget to visit us at: www.crydom.com Copyright 2017 Crydom Inc. Specifications subject to change without notice.Control Relays DataSheet (1) INPUT SPECIFICATIONS Description DC Control Control Voltage Range (VDC) 8-32 Input Current Range mA P1 28-30 Nominal Input Impedance Ohms P3 30K Control Must Operate VoltageO VDC P3 5-32 Control Must Release VoltageOf VDC P3 0-4 Control Input Current mA P3 0-2.6 PLV Range Option A VDC P4 0.5-5 PLV Range Option B VDC P4 1.25-7 PLV Range Option C VDC P4 2-10 PLV Range Option D VDC P4 4-20 Nominal Input Impedance Option A,B,C ohms P4 20K Nominal Input Impedance Option D ohms P4 220 OUTPUT STATUS FUNCTIONS Conditions Initial Logic Supply On Flash Once Load Voltage Missing / Load Open (w/control disabled) Flash Once Intermittenly Off Load Voltage Missing / Load Open (w/control enabled) Ramp Time (Soft Start upon P3 Enabled) Off to Bright Bright to Off Ramp Time (Soft Start upon P3 Disabled) On Output ON (Normally Steady Operation) GENERAL SPECIFICATIONS Description Parameters Minimum Power Factor (with Maximum Load) 0.5 Dielectric Strength, Input/Output/Base (50/60Hz) 4000 Vrms 9 Minimum Insulation Resistance ( 500 VDC) 10 Ohms Maximum Capacitance, Input/Output 10 pF Ambient Storage Temperature Range -20 to 80C Ambient Operating Temperature Range -40 to 125 C Weight (typical) 3.0 oz (86.5g) Encapsulation Thermally conductive Epoxy Terminals-Power Screws and Saddle Clamps Furnished, Unmounted Terminals-Control Barrier Strip Screw Terminals Recommended Terminal Screw Torque Range: 8-32 Screws -20 in. lbs.(Screws dry without grase) Input Connections via Screw Type Barrier Strip GENERAL NOTES (1) Voltages are reference to GND (Ground = 0 VDC) P2 THERMAL DERATE INFORMATION 25A 50A 90A 90 30 95 60 120 .2C/W 1C/W 95 1C/W .5C/W 25 100 .5C/W .4C/W 2C/W 1.5C/W 100 20 40 100 80 3C/W 2C/W 1C/W 15 110 110 110 40 10 20 NO HEATSINK 5 120 120 120 NO HEATSINK 0 0 0 5 10 15 20 25 20 40 60 80 10 20 30 40 50 20 40 60 80 20 40 60 80 0 20 40 60 80 Load Current (Amps) Load Current (Amps) Max Ambient Temp. (C) Load Current (Amps) Max Ambient Temp. (C) Max Ambient Temp. (C) Do not forget to visit us at: www.crydom.com Copyright 2017 Crydom Inc. Specifications subject to change without notice. Power Dissipation Base Plate Temp (C) Power Dissipation Base Plate Temp (C) Power Dissipation Base Plate Temp (C)