A2440 Crydom - Relays

A2440 Description

The A2440 is a solid state relay made by Crydom. Typical uses include temperature control of heaters, packaging and plastics machinery, and general industrial load switching.

USComponent has been supplying power semiconductors since 2001, including discontinued and hard-to-find part numbers. Send us an RFQ for the A2440 and we will reply with price, condition and lead time. Please check the manufacturer's datasheet to confirm ratings, package and pin-out before you order.

Summary of Features

Target Applications

Crydom A2440 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 A2440 is a 40 A Series 1 panel-mount solid state relay (older generation), SCR output, 240 VAC line, AC control, zero voltage turn-on, Form A (normally open). Source: Crydom Series 1 bulletin 801B. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage	48-280 Vrms, 47-63 Hz
Maximum load current	40 Arms
Minimum load current	40 mArms
Transient overvoltage	600 Vpk
Maximum surge current (16.6 ms, non-repetitive)	625 Apk
Maximum over current (1 s, non-repetitive)	80 Arms
Maximum on-state voltage drop @ rated current	1.6 Vpk
Maximum I²t for fusing (8.3 ms)	1620 A²s
Thermal resistance junction to case (Rjc)	0.63 °C/W
Power dissipation @ maximum current	46 W
Maximum zero voltage turn-on	30 Vpk
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Input
Control voltage range	90-280 Vrms (60 Hz)
Maximum turn-on / must turn-off voltage	90 Vrms / 10 Vrms
Input impedance	60 kOhm
Input current	2 mA @ 120 VAC, 4 mA @ 240 VAC
Maximum turn-on / turn-off time	10 ms / 40 ms
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-30 to 80°C
Weight	4 oz max

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