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H3DT
H3DT Series Timers: Precision Timing for Industrial Automation
The H3DT series represents a family of multifunctional digital timers designed for precise time control in industrial automation systems. These timers offer a wide range of timing functions including ON-delay, OFF-delay, interval, flicker, and star-delta switching, covering virtually ...
H3DT Series Timers: Precision Timing for Industrial Automation
The H3DT series represents a family of multifunctional digital timers designed for precise time control in industrial automation systems. These timers offer a wide range of timing functions including ON-delay, OFF-delay, interval, flicker, and star-delta switching, covering virtually all standard timing requirements. Available in both analog and digital display variants, the H3DT timers feature adjustable time ranges from 0.1 seconds to 9990 hours, depending on the model. They operate with supply voltages typically ranging from 24 VAC/DC to 240 VAC, with a rated insulation voltage of 250 VAC. The timers are housed in compact DIN-rail mountable enclosures with IP20 protection, making them suitable for integration into control panels. Key technical specifications include a repeat accuracy of ±0.3% and a setting accuracy of ±5% of full scale. The series includes models with 2-pole or 4-pole output configurations, utilizing SPDT or DPDT relay contacts rated for 5A at 250 VAC. The H3DT timers are designed for long-term reliability, with a mechanical life of over 10 million operations and an electrical life of 100,000 operations at rated load.
These timers are primarily deployed in industrial control panels, motor control centers, and building automation systems. Common applications include sequential start-up of motors, delayed shutdown of ventilation systems, cyclic control of pumps and compressors, and timing of lighting circuits in commercial buildings. They are also used in HVAC systems for timed defrost cycles, in conveyor systems for interval control, and in packaging machinery for precise timing of operations. The H3DT series is particularly suited for environments requiring high reliability and repeatability, such as manufacturing plants, water treatment facilities, and energy management systems.
The H3DT series includes several subcategories based on functionality and display type. Key models include the H3DT-A (analog display with knob adjustment), H3DT-N (digital display with push-button setting), and H3DT-S (star-delta timer). The product code structure typically follows the pattern H3DT-[Type]-[Supply Voltage]-[Time Range], for example H3DT-A-220-60S indicates an analog timer with 220 VAC supply and 60-second range. Other variants include the H3DT-F (flicker timer) and H3DT-L (long-range timer up to 9990 hours). Each model is available with different output configurations, such as 2-pole or 4-pole relay outputs.
At Electric Automation Network, we provide the complete H3DT series with real-time pricing and availability. Our engineering team offers personalized technical support to help select the correct timer for your application, including guidance on timing functions, voltage compatibility, and output requirements. We ensure express worldwide shipping, with most orders dispatched within 24 hours. Each product includes detailed technical documentation, wiring diagrams, and installation manuals to facilitate seamless integration into your control systems.
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