HA4812E Crydom - Relays

HA4812E Description

Crydom makes the HA4812E, a 480 V, 12 A solid state relay. Typical uses include temperature control of heaters, packaging and plastics machinery, and general industrial load switching.

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Summary of Features

Target Applications

Crydom HA4812E 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 HA4812E is a 12 A panel-mount solid state relay, HA/HD48 Series (48-530 VAC), SCR output, AC control (18-36 VAC), zero voltage turn-on. Source: Crydom HA/HD48 Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	48-530 Vrms
Maximum load current	12 Arms
Transient overvoltage	1200 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	134/140 Apk
Maximum on-state voltage drop @ rated current	1.15 Vrms
Maximum off-state leakage @ rated voltage	1 mArms
Minimum off-state dv/dt	500 V/µs
Maximum I²t for fusing, 1/2 cycle (50/60 Hz)	66/60 A²s
Thermal resistance junction to case (Rjc)	1.03 °C/W
Switching type	zero voltage turn-on
Input
Control voltage range	18-36 Vrms
Minimum turn-on voltage	18 Vrms
Must turn-off voltage	4 Vrms
Input current	16-20 mA
Maximum turn-on / turn-off time	20 ms / 30 ms
General
Dielectric strength, input/output/base	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	2.6 oz (74.9 g)

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