CSD2475 Crydom - Relays

CSD2475 Description

The CSD2475 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 CSD2475 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 CSD2475 is a 75 A panel-mount solid state relay (CSD Series, 24-280 VAC, snubberless / low leakage), SCR output, DC control 3.5-15 VDC, zero voltage turn-on. The datasheet marks this series obsolete (replaced by CSW). Source: Crydom CSD Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	24-280 Vrms
Maximum load current	75 Arms
Transient overvoltage	600 Vpk
Minimum load current	0.25 Arms
Maximum 1 cycle surge current (50/60 Hz)	954/1000 Apk
Maximum on-state voltage drop @ rated current	1.6 Vpk
Maximum off-state leakage @ rated voltage	1.0 mArms
Minimum off-state dv/dt	500 V/µs
Thermal resistance junction to case (Rjc)	0.31 °C/W
Maximum I²t for fusing (1/2 cycle, 50/60 Hz)	4555/4150 A²s
Switching type	zero voltage turn-on
Input
Control voltage range	3.5-15 VDC
Minimum turn-on / turn-off voltage	3.5 / 1.0 VDC
Typical input current	15 mA @ 5 V
Nominal input impedance	300 Ohm
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)	3.0 oz (86.5 g)

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