CWA4890 Crydom - Relays

CWA4890 Description

Crydom CWA4890 is a solid state relay. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

USComponent (Young & New Century LLC) supplies power modules, thyristors, diodes and other industrial components, including legacy parts. Contact us for a quote on the CWA4890, and please confirm ratings against the datasheet before ordering.

Summary of Features

Target Applications

Crydom CWA4890 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 CWA4890 is a 90 A panel-mount solid state relay, CW48 Series (48-660 VAC), SCR output, AC control (90-280 VAC), zero voltage turn-on, with LED status indicator and IP20 touch-safe cover. Source: Crydom CW48 Series datasheet (FDE-07-01 Rev. A). Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	48-660 Vrms
Maximum load current	90 Arms
Transient overvoltage	1200 Vpk
Minimum load current	250 mArms
Maximum 1-cycle surge current (50/60 Hz)	1290/1350 Apk
Maximum on-state voltage drop @ rated current	1.3 Vpk
Maximum off-state leakage @ rated voltage	1 mArms
Minimum off-state dv/dt	500 V/µs
Maximum I²t for fusing, 1/2 cycle (50/60 Hz)	8320/7560 A²s
Thermal resistance junction to case (Rjc)	0.16 °C/W
Motor rating (UL 508 / IEC 60947)	2 HP @ 120 VAC, 5 HP @ 240 VAC, 10 HP @ 480 VAC
Switching type	zero voltage turn-on
Input
Control voltage range	90-280 VAC
Minimum turn-on voltage	90 VAC
Must turn-off voltage	10 VAC
Input current	6-10 mA
Maximum turn-on / turn-off time	20 ms / 30 ms
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
LED input status indicator	Green
Weight (typical)	2.88 oz (81.53 g)

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