H12D4840D Crydom - Relays

H12D4840D Description

H12D4840D is a 480 V, 40 A solid state relay made by Crydom. Solid state relays like this switch heaters, motors, lamps and other loads quietly and without contact wear.

Request a quote for the H12D4840D and our team will get back to you with price, quantity available and lead time. We ship worldwide. As with any power device, please check the manufacturer's datasheet to confirm it matches your design.

Summary of Features

Target Applications

Crydom H12D4840D 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 H12D4840D is a dual-output panel-mount solid state relay (DUAL Series, two independently controlled channels), 40 A per channel @ 48-530 VAC, SCR output, DC control 4-15 VDC, zero voltage turn-on. Source: Crydom DUAL Series datasheet. Values at 25°C unless noted.

Parameter	Value
Output (per channel)
Operating voltage (47-63 Hz)	48-530 Vrms
Maximum load current	40 Arms
Minimum load current	0.15 Arms
Transient overvoltage	1200 Vpk
Maximum off-state leakage @ rated voltage	10 mArms
Minimum off-state dv/dt	500 V/µs
Maximum 1 cycle surge current (50/60 Hz)	597/625 Apk
Maximum on-state voltage drop @ rated current	1.6 Vpk
Thermal resistance junction to case (Rjc)	0.63 °C/W
Maximum I²t for fusing (1/2 cycle, 50/60 Hz)	1779/1621 A²s
Switching type	zero voltage turn-on
Input
Control voltage range	4-15 VDC
Minimum turn-on / turn-off voltage	4.0 VDC / 1.0 VDC
Typical input current	13 mA @ 5 VDC
Nominal input impedance	240 Ohm
Maximum turn-on / turn-off time	1/2 cycle / 1/2 cycle
General
Dielectric strength, input/output	4000 Vrms
Ambient operating temperature	-40 to 80°C
Weight (typical)	3.0 oz (86.5 g)

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