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Crydom A4850

Crydom - A4850 - Relay; SSR; Zero-Switching; SPST-NO; Cur-Rtg 50A; Ctrl-V 90-280AC; Vol-Rtg 80-530AC View larger image View larger image
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Crydom Relay; SSR; Zero-Switching; SPST-NO; Cur-Rtg 50A; Ctrl-V 90-280AC; Vol-Rtg 80-530AC
Mfr. Part#:

Allied Stock#: 70130423

 RoHS Compliant Part

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Pricing (USD) & Availability
Standard Pricing
$67.42 (Each)

30 can ship immediately.

40 on order.

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Minimum Quantity: 1 |  Multiples Of: 1


Brand/Series: 1 Series
Contact Form: SPST-NO
Current Rating: 50 A
Current, Leakage, Off-State: 10 mA (RMS) (Max.) @ Rated Voltage
Current, Surge: 625 Apeak (Max.)
Dielectric Strength: 4000 V (RMS) @ 50⁄60 Hz
Dimensions: 1.80" L x 0.90" W x 2.30" H
Function: Zero-Switching
Impedance, Input: 60 Killoohms (Nom.)
Mounting Type: Panel Mount
Number of Pins: 4
Relay Type: Solid State
Resistance, Thermal, Junction to Case: 0.63 °C⁄W
Standards: UL, CSA, VDE, CE
Temperature, Ambient, Maximum: 80 °C
Temperature, Ambient, Minimum: -40 °C
Termination: Screws
Transient Overvoltage: 800 Vpeak
Voltage Rating: 530 VAC
Voltage, Control: 280 VAC


80 to 530 V (RMS) @ 47 to 63 Hz Voltage Rating, SPST-NO Contact, Solid State Relay

10-125 Amp; 120, 240 VAC; AC Output
Featuring state-of-the-art surface mount technology, these SPST-NO relays deliver proven reliability in the most demanding applications. Output consists of an SCR AC switch with internal snubber and is available in zero-cross, random turn-on (phase controllable) versions with either AC or DC input (coil) control. Operating Temperature Range: –30°C to 80°C. Isolation Voltage (V RMS ): 4000. Options Available on Special Order: Normally closed (Form B), 400 Hz operation and 24 VAC input (18-36 VAC).

  • AC or DC Control, SCR AC Output
  • Zero Voltage Switching
  • Panel Mount
  • UL, CSA, VDE Approved