MCS Series
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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
120 Vrms
240 Vrms
480 Vrms
25 A
MCST1225
MCST2425
MCST4825
50 A
MCST1250
MCST2450
MCST4850
90 A
MCST1290
MCST2490
MCST4890
AVAILABLE OPTIONS
OUTPUT SPECIFICATIONS (voltage)
Description
Operating Voltage (47-63Hz) [Vrms]
Transient Overvoltage [Vpk]
Maximum Off-State Leakage Current @ Rated Voltage [mArms]
Minimum Off-State dv/dt @ Maximum Rated Voltage [V/µsec]
120 VAC
48-140
400
5
200
240 VAC
180-280
600
7
200
480 VAC
300-530
1200
12
200
OUTPUT SPECIFICATIONS (current)
Description
Maximum Load Current [Arms]
Minimum Load Current [mArms]
Maximum Surge Current (16.6ms) [Apk]
Maximum On-State Voltage Drop @ Rated Current [Vpk]
Thermal Resistance Junction to Case (Rjc) [°C/W]
Maximum I²t for Fusing (8.3 msec) [A²sec]
25 A
25
150
250
1.6
1.02
260
50 A
50
150
625
1.6
0.63
1620
90 A
90
150
1200
1.6
0.28
6000
INPUT SPECIFICATIONS (1)
Description
Control Voltage Range (VDC)
Input Current Range [mA]
Nominal Input Impedance [Ohms]
Control Must Operate Voltage "On"[VDC][P3]
Control Must Release Voltage "Off" [VDC][P3]
Input Current [mA][P3]
Analog Range Option A [VDC][P4]
Analog Range Option B [VDC][P4]
Analog Range Option C [VDC][P4]
Analog Range Option D [VDC][P4]
Nominal Input Impedance Option A,B,C[ohms][P4]
Nominal Input Impedance Option D [ohms][P4]
DC Control
8-32
28-30
30K
5-32
0-4
0-2.6
0.5-5
1.25-7
2-10
4-20
20K
220
GENERAL SPECIFICATIONS
Description
Minimum Power Factor (with Maximum Load)
Dielectric Strength, Input/Output/Base (50/60Hz)
Minimum Insulation Resistance (@ 500 V DC)
Maximum Capacitance, Input/Output
Ambient Operating Temperature Range
Ambient Storage Temperature Range
Weight (typical)
Encapsulation
Terminals-Power
Terminals-Control
Recommended Terminal Screw Torque Range:
Parameters
0.5
4000 Vrms
10
9
Ohm
10 pF
-20 to 80°C
-40 to 125 °C
3.0 oz (86.5g)
Thermally conductive Epoxy
Screws and Saddle Clamps Furnished, Unmounted
Barrier Strip Screw Terminals
8-32 Screws -20 in. lbs.(Screws dry without grase)
Input Connections via Screw Type Barrier Strip
GENERAL NOTES
1) Voltages are reference t o GND (Ground = 0 VDC) P2
OUTPUT STATUS FUNCTIONS
Conditions
Initial Logic Supply On
Load Voltage Missing / Load Open (w/control P3 disabled)
Load Voltage Missing / Load Open (w/control P3 enabled))
Ramp Time (Soft Start upon P3 Enabled)
Ramp Time (Soft Start upon P3 Disabled)
Output ON (Normally Steady Operation)
LED Status
Flash Once
Flash Once Intermittenly
Off
Off to Bright
Bright to Off
On
THERMAL DERATE INFORMATION
MECHANICAL SPECIFICATIONS
RAMP TIME IN SECONDS
AGENCY APPROVALS
UL E116949
Rev. 033109
ANNEX - ENVIROMENTAL INFORMATION
