H12D4850 Crydom - Relays

H12D4850 Description

H12D4850 is a 480 V, 50 A solid state relay made by Crydom. 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 H12D4850 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 H12D4850 is a 50 A panel-mount solid state relay, H12 Series (48-530 VAC, with snubber), SCR output, DC control, zero voltage turn-on. Source: Crydom H12 Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output
Operating voltage (47-440 Hz)	48-530 Vrms
Maximum load current	50 Arms
Transient overvoltage	1200 Vpk
Minimum load current	150 mArms
Maximum 1-cycle surge current (50/60 Hz)	597/625 Apk
Maximum on-state voltage drop @ rated current	1.15 Vrms
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Maximum I²t for fusing, 1/2 cycle (50/60 Hz)	1770/1629 A²s
Thermal resistance junction to case (Rjc)	0.45 °C/W
Switching type	zero voltage turn-on
Input
Control voltage range	4-32 VDC
Minimum turn-on voltage	4.0 VDC
Must turn-off voltage	1.0 VDC
Input current	7-12 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)	2.6 oz (74.9 g)

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