H3DK-G 24-240VAC/DC

Overview of Omron H3DK-G 24-240VAC/DC

The Omron H3DK-G 24-240VAC/DC is a star-delta timer designed for industrial automation applications. It features a DIN rail mountable form factor with a compact width of 22.5 mm and provides two SPDT relay outputs for star and delta contactor control. The timer supports a wide supply voltage range from 24 to 240 VAC or VDC, making it versatile for different power environments.

Key Features of Omron H3DK-G 24-240VAC/DC

• Operating Voltage: Wide AC/DC supply voltage range from 24 to 240 V with 85% to 110% allowable fluctuation.[web:388][web:390]
• Timer Function: Star-delta delay operation with selectable transfer times of 0.05, 0.1, 0.25, and 0.5 seconds, adjustable within the time range setting.[web:390]
• Control Output: Two SPDT relay contacts (start and delta circuit) rated for 5 A at 250 VAC (resistive load).[web:390]
• Time Range Settings: Several time range settings with multiple scale numbers for versatile timer applications.[web:387]
• Operating and Resetting: Time-limit operation with self-reset function.[web:390]
• Construction: Compact, DIN rail mountable, with screw terminals for secure wiring.[web:388]
• Protection Ratings: IP30 overall, IP20 at terminals, suitable for industrial environments.[web:390]
• Operating Environment: Temperature range from -20 to 55°C, humidity 25% to 85%.[web:390]
• Certifications: UL, CSA, CCC, and CE marked, ensuring safety and compliance.[web:387]

Technical Specs of Omron H3DK-G 24-240VAC/DC

Model	H3DK-G 24-240VAC/DC
Supply Voltage	24 to 240 VAC or VDC
Operating Voltage Range	85% to 110% of rated voltage
Timer Function	Star-delta delay timer
Time Range	Selectable multiple ranges, typically 1 - 120 seconds
Transfer Time Settings	0.05 s, 0.1 s, 0.25 s, 0.5 s (selectable)
Control Output	2 × SPDT relay contacts, 5 A at 250 VAC (resistive)
Contact Material	Silver alloy with gold flash plating
Operating Temperature	-20°C to 55°C (no icing)
Operating Humidity	25% to 85%
Protection Rating	IP30 overall, IP20 at terminals
Mounting	DIN rail
Dimensions (W×H×D)	22.5 × 90 × 100 mm
Weight	Approx. 120 g

Applications / Use Case

The Omron H3DK-G 24-240VAC/DC timer is primarily used in motor control circuits to facilitate star-delta starter timing, reducing starting current and protecting motors from electrical stress in industrial automation settings.

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Verification Links:
https://files.omron.eu/downloads/latest/datasheet/en/l118_h3dk_solid-state_timers_datasheet_en.pdf
https://industrial.omron.eu/en/products/H3DK-G-24-240VAC-DC
https://www.ia.omron.com/product/item/3820/