MCST1290AS

SSR-INDUSTRIAL MT. PM SOFT-START SS

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: SENSATA-CRYDOM / PARTNER STOCK
Product type:
SVHC: No SVHC (07-Nov-2024)
Product Range: MCS Series

Delivery and price
Units per pack	3
Price	166.7 €
Current stock	10+
Lead time	30 days

Datasheet

## **Crydom** 

_See full Datasheet below..._ 

## **BUY NOW** 

## **BUY NOW** 

masterelectronics.com & onlinecomponents.com are **authorized** e-commerce distributors of electronic components. 

## **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** 

## **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/µsec]|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 I²t for Fusing (8.3 msec) [A²sec]|260|1620|6000|



## **INPUT SPECIFICATIONS (1)** 

## **DC Control** 

|**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 Voltage"On"[VDC][P3]|5-32|
|Control Must Release Voltage"Off"[VDC][P3]|0-4|
|Input Current [mA][P3]|0-2.6|
|Analog Range Option A [VDC][P4]|0.5-5|
|Analog Range Option B [VDC][P4]|1.25-7|
|Analog Range Option C [VDC][P4]|2-10|
|Analog 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|



## **GENERAL SPECIFICATIONS** 

|**Description**|**Parameters**|
|---|---|
|Minimum Power Factor (with Maximum Load)|0.5|
|Dielectric Strength, Input/Output/Base (50/60Hz)|4000 Vrms|
|Minimum Insulation Resistance(@ 500 V DC)|109Ohm|
|Maximum Capacitance, Input/Output|10 pF|
|Ambient Operating Temperature Range|-20 to 80°C|
|Ambient Storage 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 

## **OUTPUT STATUS FUNCTIONS** 

|**Conditions**|**LED Status**|
|---|---|
|Initial Logic Supply On|Flash Once|
|Load Voltage Missing / Load Open (w/control P3 disabled)|Flash Once Intermittenly|
|Load Voltage Missing / Load Open (w/control P3 enabled))|Off|
|Ramp Time (Soft Start upon P3 Enabled)|Off to Bright|
|Ramp Time (Soft Start upon P3 Disabled)|Bright to Off|
|Output ON (Normally Steady Operation)|On|



## **THERMAL DERATE INFORMATION** 

## **MECHANICAL SPECIFICATIONS** 

## **RAMP TIME IN SECONDS** 

## **AGENCY APPROVALS** 

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Updated at June 5, 2026

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