A2490 Crydom - Relays

A2490 Description

The A2490 is a solid state relay made by Crydom. 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 A2490 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 A2490 is a 90 A panel-mount solid state relay, Series 1 (24-280 VAC), SCR output, AC control (90-280 VAC), zero voltage turn-on. Source: Crydom Series 1 datasheet (FDE-07-01 Rev. A). Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	24-280 Vrms
Maximum load current	90 Arms
Transient overvoltage	600 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	1145/1200 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)	6560/5976 A²s
Thermal resistance junction to case (Rjc)	0.27 °C/W
Switching type	zero voltage turn-on
Input
Control voltage range	90-280 Vrms
Minimum turn-on voltage	90 Vrms
Must turn-off voltage	10 Vrms
Input current	5-10 mA
Maximum turn-on / turn-off time	20 ms / 30 ms
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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