CSW2490 Crydom - Relays

CSW2490 Description

Crydom CSW2490 is a solid state relay rated at 240 V and 90 A. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

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Summary of Features

Target Applications

Crydom CSW2490 is used for switching AC loads in industrial heating and temperature control (ovens, furnaces, plastic molding and extrusion machines), packaging and food processing equipment, lighting control, HVAC systems and industrial automation.

Key Specifications

Crydom CSW2490 is a 90 A panel-mount solid state relay, CSW Series (24-280 VAC, snubberless), SCR output, DC control, zero voltage turn-on. Source: Crydom CSW Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	24-280 Vrms
Maximum load current	90 Arms
Transient overvoltage	600 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	1145/1200 Apk
Maximum on-state voltage drop @ rated current	1.15 Vrms
Maximum off-state leakage @ rated voltage	1.0 mArms
Minimum off-state dv/dt	500 V/µs
Maximum I²t for fusing, 1/2 cycle (50/60 Hz)	6560/5976 A²s
Thermal resistance junction to case (Rjc)	0.27 °C/W
Switching type	zero voltage turn-on
Input
Control voltage range	3-32 VDC
Minimum turn-on voltage	3 VDC
Must turn-off voltage	1.0 VDC
Input current	10 mA @ 12 VDC
Maximum turn-on / turn-off time	1/2 cycle / 1/2 cycle
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	2.6 oz (74.9 g)

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