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3G Electric
CRYDOM CKRD4820 DIN-Rail Mounted Solid State Relay, SCR AC Output, 20 A - DIN-Rail Mounted Relays
CRYDOMDIN-Rail Mounted Relays

CRYDOM CKRD4820 DIN-Rail Mounted Solid State Relay, SCR AC Output, 20 A

The CRYDOM CKRD4820 is a DIN-rail mounted solid-state relay with a DC input current of 8 to 12 mA and an AC output voltage of 48 to 530V AC. It features a Form A (SPST-NO) switch configuration, SCR output, and a…

SKU 3G-OTH-36708

Also listed as: CKRD 4820 · CKRD-4820

Brand
CRYDOM
Item
CKRD4820 DIN-Rail Mounted Solid State Relay, SCR AC Output, 20 A
Part Number
CKRD4820
Category
DIN-Rail Mounted Relays
Available to Order
Also known as:CKRD4820CRYDOM
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

CRYDOM
Manufacturer Part Number
CKRD4820
Type
SCR, AC Output
Finger Safe
Yes
Current Type
DC
Input Current
8 to 12 mA
Mounting Style
DIN Rail
Output Voltage
48 to 530V AC
Max Output Current
20 A
Switch Configuration
Form A
Voltage/Current Type
AC Output
Electrical Connection
Screw Clamp
Maximum Output Current without Heat Sink
20 A

Technical Documents

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CRYDOM Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CRYDOM CKRD4820 is a DIN-rail mounted solid-state relay with a DC input current of 8 to 12 mA and an AC output voltage of 48 to 530V AC. It features a Form A (SPST-NO) switch configuration, SCR output, and a maximum output current of 20 A without a heat sink. The relay is finger safe and uses screw clamp electrical connections.

Frequently Asked Questions

What is the CRYDOM CKRD4820 solid state relay used for?

The CRYDOM CKRD4820 is a DIN-rail mounted solid state relay used for switching AC loads in industrial control panels, HVAC systems, and automation equipment. It provides reliable, silent switching with an SCR output and a maximum output current of 20 A without a heat sink.

What are the specifications of the CRYDOM CKRD4820?

The CRYDOM CKRD4820 is a DIN-rail mounted solid state relay with a DC input current of 8 to 12 mA and an AC output voltage of 48 to 530V AC. It features a Form A (SPST-NO) switch configuration, SCR output, and a maximum output current of 20 A without a heat sink. Connections are screw clamp and finger safe.

Where to buy the CRYDOM CKRD4820 worldwide?

3G Electric supplies the CRYDOM CKRD4820 solid state relay to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this DIN-rail mounted relay with SCR output and 20 A maximum current.

How to install a CRYDOM CKRD4820 solid state relay?

Mount the CRYDOM CKRD4820 on a standard DIN rail. Connect the DC input (8 to 12 mA) to the control terminals and the AC load (48 to 530V AC) to the output terminals using screw clamp connections. Ensure proper heat sinking if operating near the 20 A maximum output current. Follow local electrical codes.

Used in

Common applications for CRYDOM
Industrial burner control — CRYDOM CL240A10C SSR for modulating gas valve actuation
Pump motor switching — CRYDOM C53TP25CH-10 SSR for single-phase AC motor start/stop
Process heating — CRYDOM EL240A10R-05 SSR for electric heater bank control
DIN-rail thermal management — CRYDOM HS151DR heat sink with fan for SSR cooling in control panels
Three-phase load switching — CRYDOM CD2450W2V dual SSR for two-phase control in industrial ovens
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CRYDOM Products

3G Electric supplies CRYDOM din-rail mounted relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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The CRYDOM CMRD4845 is a DIN-rail mounted solid state relay with a Form A, SCR AC output rated 48 to 530V AC. It features a DC input current of 30 mA and a maximum output current without heat sink of 45 A. The cage-type electrical connection and finger-safe design suit panel installations for switching AC loads in industrial control systems
CRYDOM
The CRYDOM CMRD4845 is a DIN-rail mounted solid state relay with a Form A, SCR AC output rated 48 to 530V AC. It features a DC input current of 30 mA and a maximum output current without heat sink of 45 A. The cage-type electrical connection and finger-safe design suit panel installations for switching AC loads in industrial control systems
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CRYDOM
DIN-rail mounted solid state relay with integral heat sink and SCR output. Switches AC loads from 48 to 600 VAC. Suitable for industrial automation, HVAC, and process control applications requiring silent, fast switching without mechanical contacts

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