MCSS1225ES

## **| MCS SERIES** 

SOFT START/SOFT STOP SOLID STATE RELAY 

## Features 

- Microcontroller based soft start/soft stop SSR 

- Ratings from 25 A to 90 A @ 48-530 VAC 

- Low-voltage, current or potentiometer control 

- Output status indicator 

- Adjustable ramp rates • For use with a wide range of resistive loads 

## **PRODUCT SELECTION** 

|**Line Voltage**|**25 A**|**50 A**|**90 A**|
|---|---|---|---|
|**120 VAC**|MCST1225|MCST1250|MCST1290|
|**240 VAC**|MCST2425|MCST2450|MCST2490|
|**480 VAC**|MCST4825|MCST4850|MCST4890|



## **SPECIFICATIONS** 

## Output (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/μsec]**|200|200|200|



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## Output (current) 

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Description 25A 50A 90A<br>Maximum Load Current [Arms] 25 50 90<br>Minimum Load Current [mArms] 150 150 150<br>Maximum Surge Current (16.6 msec) [Apk] 250 625 1200<br>Maximum On-State Voltage Drop @ Rated Current [Vpk] 1.6 1.6 1.6<br>Thermal Resistance Junction to Case (Rjc) [°C/W] 1.02 0.63 0.28<br>Maximum I² t for Fusing (8.3 msec) [A²sec] 260 1620 6000<br>**----- End of picture text -----**<br>


## Input[(1)] 

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Description DC Control<br>DC Voltage Supply Range (VDC) [P1] 8-32<br>Input Current Range [mA] [P1] 28-30<br>Nominal Input Impedance [Ohm] [P3] 30K<br>Control Must Operate Voltage “On”[VDC][P3] 5-32<br>Control Must Release Voltage “Off” [VDC][P3] 0-4<br>Control Input Current [mA][P3]  0-2.6<br>PLV Range Option A [VDC][P4] 0.5-5<br>PLV Range Option B [VDC][P4] 1.25-7<br>PLV Range Option C [VDC][P4] 2-10<br>PLV Range Option D [VDC][P4] 4-20<br>Nominal Input Impedance Option A,B,C [Ohm][P4] 20K<br>Nominal Input Impedance Option D [Ohm][P4] 220<br>**----- End of picture text -----**<br>


## Output Status Functions 

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Conditions<br>Initial Logic Supply Flash Once<br>Load Voltage Missing/Load Open (w/control disabled) Flash Once Intermittenly<br>Load Voltage Missing/Load Open (w/control enabled) Off<br>Ramp Time (Soft Start upon P3 Enabled) Off to Bright<br>Ramp Time (Soft Start upon P3 Disabled) Bright to Off<br>Output ON (Normally Steady Operation) On<br>**----- End of picture text -----**<br>


## General 

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Description Parameters<br>Minimum Power Factor (with Maximum Load) 0.5<br>Dielectric Strength, Input/Output/Base (50/60 Hz) 4000 Vrms<br>Minimum Insulation Resistance (@ 500 VDC) 10 [9]   Ohms<br>Maximum Capacitance, Input/Output 10 pF<br>Ambient Operating Temperature Range  -20 to 80˚C<br>Ambient Storage Temperature Range  -40 to 125˚C<br>**----- End of picture text -----**<br>


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Copyright © 2024 Sensata Technologies, Inc. 

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**Weight (typical) Encapsulation Terminals-Power Terminals-Control Max. Terminal (Power) Screw Torque** 

## 3.0 oz (86.5g) 

Thermally Conductive Epoxy Screws and Saddle Clamps Furnished, Unmounted Barrier Strip Screw Terminals 20 lb-in (8-32 screws, dry without grease) 

## **MECHANICAL SPECIFICATIONS** 

Tolerances: ±0.02 in / 0.5 mm 

All dimensions are in inches [millimeters] 

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Analog Input OPTIONS: A, B, C, D Analog Input OPTIONS: E (Internal Potentiometer)<br>MOUNTING 1.10 MOUNTING 1.10<br>HOLE/SLOT (27.9) 8-32 TERMINAL HOLE/SLOT (27.9) 8-32 TERMINAL<br>0.17 (4.3) DIA. .45 (2 PLACES) 0.17 (4.3) DIA. .45 (2 PLACES)<br>(11.4) (11.4)<br>OUTPUT OUTPUT<br>1/L1 2/T1 1/L1 2/T1<br>2.30 2.30<br>1.87 [58.4] 1.87 [58.4]<br>[47.5] [47.5]<br>P4<br>OUTPUTSTATUS P3 OUTPUTSTATUS P3<br>P2 P2<br>P1 P1<br>.78 .78<br>BASE PL.125(3.2) ATE 1.80 (19.8) BASE PL.125(3.2) ATE 1.80 (19.8)<br>(45.7) “ | n s (45.7) _<br>**----- End of picture text -----**<br>


## **THERMAL DERATE INFORMATION** 

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25A 50A 90A<br>30 95 60 120 90<br>1 1 .5 95 .2<br>25 2 100 1.5 .5 .4 100<br>20 40 100 80<br>3 2 1<br>15 110<br>110 110<br>10 20 40<br>NO HEATSINK<br>5 120 NO HEATSINK 120 120<br>0 Z S 0 A N 0 7 S<br>51 01 52 02 52 04 06 08 0 10 20 30 40 50 20 40 60 80 20 40 60 80 02 04 06 08 0<br>Load Current (Amps) Max Ambient Temp. (”C) Load Current (Amps) Max Ambient Temp. (”C) Load Current (Amps) Max Ambient Temp. (”C)<br>WIRING DIAGRAM<br>AC<br>me P4<br>+ P1 P2<br>OUTPU T<br>1/L1 2/T1<br>10K - 50K<br>For A,B or C Option<br>OUTPU T<br>STATUS<br>°<br>+<br>P1  8-32Vdc (+)<br>P2  Ground (-)<br>P3  ON/OFF Contro l<br> 0-5V, 0-7V, 0-10V, 4-20mA<br>Note: P2 is also 4-20mA return<br>C) C)<br>C)<br>Power Dissipation<br>Base Plate Temp ( Power Dissipation Base Plate Temp ( Power Dissipation<br>Base Plate Temp (<br>**----- End of picture text -----**<br>


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## **RAMP TIME IN SECONDS** 

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Option S (1 sec) Option S (1 sec)<br>1.1 1.1<br>1.0 1.0<br>0.9 0.9<br>0.8 0.8<br>0.7 0.7<br>0.6 0.6<br>0.5 0.5<br>0.4 0.4<br>0.3 0.3<br>0.2 0.2<br>0.1 0.1<br>0 0<br>0 24 68 10 12 0 48 12 16 20<br>Analog Input Voltage P4 Analog Input Current P4<br>Option A 5Vdc Option B 7Vdc Option C 10Vdc Option D 4-20mA<br>Option M (10 sec) Option M (10 sec)<br>11 11<br>0 0<br>9 9<br>8 8<br>7 7<br>6 6<br>5 5<br>4 4<br>3 3<br>2 2<br>1 1<br>0 0<br>0 24 68 10 12 0 48 12 16 20<br>Analog Input Voltage P4 Analog Input Current P4<br>Option A 5Vdc Option B 7Vdc Option C 10Vdc Option D 4-20m A<br>Ramp Time in Seconds Ramp Time in Seconds<br>Ramp Time in Seconds Ramp Time in Seconds<br>**----- End of picture text -----**<br>


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Soft Start<br>100%<br>0%<br>Ramp time<br>Soft Stop<br>100%<br>0%<br>Ramp time<br>Soft Start/Stop<br>100%<br>0%<br>Ramp time Ramp time<br>Load Voltage<br>Load Voltage<br>Load Voltage<br>**----- End of picture text -----**<br>


**ORDERING OPTIONS** Example : MCST2425CS **MC ST 24 25 C S Series MC Product Type ST:** Soft Start **SP:** Soft Stop **SS:** Soft Start/Soft Stop **Operating Voltage 12:** 90-140 Vrms **24:** 180-280 Vrms **48:** 300-530 Vrms **Rated Load Current 25:** 25 Amps **50:** 50 Amps **90:** 90 Amps **Analog Input A:** 0-5 VDC **B:** 0-7 VDC **C:** 0-10 VDC **D:** 4-20 mA **E:** Internal Potentiometer **Ramp Time On/Off S:** 100 msec - 1 sec Required for valid part number For options only and not required for valid part **M:** 1 sec - 10 sec number 

NOTE: Not all combinations are available. 

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## **GENERAL NOTES** 

(1) (2) Voltages are reference to GND (Ground = 0 VDC) P2 

## **AGENCY APPROVALS & CERTIFICATIONS** 

E116949 

## **WARNINGS** 

RISK OF MATERIAL DAMAGE AND HOT ENCLOSURE 

- The product’s side panels may be hot, allow the product to cool before touching 

- Follow proper mounting instructions including torque values 

- Do not allow liquids or foreign objects to enter this product 

**Failure to follow these instructions can result in serious injury, or equipment damage.** 

HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH 

- Disconnect all power before installing or working with this equipment 

- Verify all connections and replace all covers before turning on power **Failure to follow these instructions will result in death or serious injury.** 

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Rev:07/24/2024 

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