A1240E Crydom - Relays

A1240E Description

Crydom A1240E is a solid state relay. Typical uses include temperature control of heaters, packaging and plastics machinery, and general industrial load switching.

USComponent (Young & New Century LLC) supplies power modules, thyristors, diodes and other industrial components, including legacy parts. Contact us for a quote on the A1240E, and please confirm ratings against the datasheet before ordering.

Summary of Features

Target Applications

Crydom A1240E 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 A1240E is a 40 A panel-mount solid state relay, Series 1 120 VAC (24-140 VAC), SCR output, AC control (18-36 VAC), zero voltage turn-on. Source: Crydom Series 1 120 VAC datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	24-140 Vrms
Maximum load current	40 Arms
Transient overvoltage	600 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	597/625 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)	1770/1629 A²s
Thermal resistance junction to case (Rjc)	0.5 °C/W
Switching type	zero voltage turn-on
Input
Control voltage range	18-36 Vrms
Minimum turn-on voltage	18 Vrms
Must turn-off voltage	4 Vrms
Input current	16-20 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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