D2425-B Crydom - Relays

D2425-B Description

Crydom makes the D2425-B, a 240 V, 25 A solid state relay. 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 D2425-B 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 D2425-B is a 25 A Series 1T 240 VAC panel-mount solid state relay with normally closed (Form B) output, SCR output, 24-280 VAC, DC control 3-32 VDC, phototransistor trigger. Source: Crydom Series 1T 240 VAC datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	24-280 Vrms
Maximum load current	25 Arms
Transient overvoltage	600 Vpk
Minimum load current	40 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	10 mArms
Minimum off-state dv/dt	500 V/µs
Thermal resistance junction to case (Rjc)	0.8 °C/W
Maximum I²t for fusing (50/60 Hz)	285/259 A²s
Output	Normally closed (Form B)
Input
Control voltage range	3-32 VDC
Maximum turn-on / must turn-off voltage (-B version)	1 VDC / 3 VDC
Input current for on-state (min-max)	3.4-30 mA
Nominal input impedance	1.5 kOhm
Maximum turn-on / turn-off time	1/2 cycle / 1/2 cycle
General
Ambient operating temperature	-40 to 80°C
Weight (typical)	2.64 oz (74.9 g)

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