CKRD4820P Crydom - Relays

CKRD4820P Description

Rated at 480 V and 20 A, the Crydom CKRD4820P is a solid state relay. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

Looking for a replacement CKRD4820P? USComponent can quote new and hard-to-find stock and ships worldwide. Request a quote for pricing and lead time, and double-check the datasheet to make sure it fits your application.

Summary of Features

Target Applications

Crydom CKRD4820P 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 CKRD4820P is a 20 A slim DIN-rail solid state relay (CKR48 Series, 22.5 mm wide, 48-530 VAC), SCR output, DC control (4.0-32 VDC), zero-cross turn-on, LED input indicator, with internal overvoltage protection. Source: Crydom CKR48 Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	48-530 Vrms
Maximum load current	20 Arms
Transient overvoltage	1200 Vpk
Minimum load current	0.15 Arms
Maximum surge current (16.6 ms)	250 Apk
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
Maximum I²t for fusing (8.3 ms)	260 A²s
Switching type	zero-cross turn-on
Input
Control voltage range	4.0-32 VDC
Turn-on / turn-off voltage	4.0 VDC / 1.0 VDC
Typical input current	8-12 mA
Maximum turn-on / turn-off time	1/2 cycle / 1/2 cycle
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	10 oz (280 g)

Technical document (PDF)  |  Request a quote for CKRD4820P (reply within 24 hours)