H12CA4890 Crydom - Relays

H12CA4890 Description

Crydom makes the H12CA4890, a solid state relay. It is widely used for heater control, motor switching, lighting and process equipment where mechanical contacts would wear out.

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Summary of Features

Target Applications

Crydom H12CA4890 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 H12CA4890 is a 90 A panel-mount solid state relay (H12C Series, 48-660 VAC), SCR output, AC control 90-140 Vrms, zero voltage turn-on. Source: Crydom H12C Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-63 Hz)	48-660 Vrms
Maximum load current	90 Arms
Transient overvoltage	1200 Vpk
Maximum surge current (16.6 ms)	1200 Apk
Maximum on-state voltage drop @ rated current	1.6 Vpk
Maximum off-state leakage @ rated voltage	1.0 mArms
Minimum off-state dv/dt	500 V/µs
Thermal resistance junction to case (Rjc)	0.28 °C/W
Maximum I²t for fusing (8.3 ms)	6000 A²s
Switching type	zero voltage turn-on
Input
Control voltage range	90-140 Vrms
Turn-on / turn-off voltage	90 / 10 Vrms
Typical input current	15 mA
Nominal input impedance	8 kOhm
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)	3.0 oz (86.5 g)

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