CWD4825 Crydom - Relays

CWD4825 Description

Crydom CWD4825 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 CWD4825, and please confirm ratings against the datasheet before ordering.

Summary of Features

Target Applications

Crydom CWD4825 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 CWD4825 is a 25 A panel-mount solid state relay, CW48 Series (48-660 VAC), SCR output, DC control, 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	25 Arms
Transient overvoltage	1200 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	570/600 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)	1620/1500 A²s
Thermal resistance junction to case (Rjc)	0.3 °C/W
Motor rating (UL 508 / IEC 60947)	0.75 HP @ 120 VAC, 2 HP @ 240 VAC, 5 HP @ 480 VAC
Switching type	zero voltage turn-on
Input
Control voltage range	4-32 VDC
Minimum turn-on voltage	4 VDC
Must turn-off voltage	1 VDC
Input current	10-15 mA
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
LED input status indicator	Green
Weight (typical)	2.88 oz (81.53 g)

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