CKRA2420E Crydom - Relays

CKRA2420E Description

CKRA2420E is a 240 V, 20 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 CKRA2420E 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 CKRA2420E is a 20 A slim DIN-rail solid state relay (CKR24 Series, 22.5 mm wide, 24-280 VAC), SCR output, control 18-36 Vrms, zero voltage turn-on, LED input indicator. Source: Crydom CKR24 Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	24-280 Vrms
Maximum load current	20 Arms
Transient overvoltage	600 Vpk
Minimum load current	0.15 Arms
Maximum surge current (16.6 ms)	250 Apk
Maximum I²t for fusing (8.3 ms)	260 A²s
Maximum on-state voltage drop @ rated current	1.6 Vpk
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Switching type	zero voltage turn-on
Input
Control voltage range	18-36 Vrms
Turn-on / turn-off voltage	18 / 4.0 Vrms
Typical input current	10 mA @ 24 Vrms
Maximum turn-on / turn-off time	10 ms / 40 ms
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	10 oz (280 g)

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