D4825 Crydom - Relays

D4825 Description

Crydom D4825 is a solid state relay. Solid state relays like this switch heaters, motors, lamps and other loads quietly and without contact wear.

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Summary of Features

Target Applications

Crydom D4825 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 D4825 is a 25 A panel-mount solid state relay, Series 1 480 VAC (48-530 VAC), SCR output, DC control, zero voltage turn-on. Source: Crydom Series 1 480 VAC datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	48-530 Vrms
Maximum load current	25 Arms
Transient overvoltage	800 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	239/250 Apk
Maximum on-state voltage drop @ rated current	1.15 Vrms
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)	285/259 A²s
Thermal resistance junction to case (Rjc)	0.8 °C/W
Switching type	zero voltage turn-on
Input
Control voltage range	4-32 VDC
Minimum turn-on voltage	4.0 VDC
Must turn-off voltage	1.0 VDC
Input current	7-12 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
Weight (typical)	2.6 oz (74.9 g)

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