CWD48125 Crydom - Relays

CWD48125 Description

The CWD48125 is a solid state relay made by Crydom. 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 CWD48125 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 CWD48125 is a 125 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	125 Arms
Transient overvoltage	1200 Vpk
Minimum load current	250 mArms
Maximum 1-cycle surge current (50/60 Hz)	1900/2000 Apk
Maximum on-state voltage drop @ rated current	1.25 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)	18000/16600 A²s
Thermal resistance junction to case (Rjc)	0.11 °C/W
Motor rating (UL 508 / IEC 60947)	3 HP @ 120 VAC, 7.5 HP @ 240 VAC, 15 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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