Omron H3CA-8 Digital Relay Timer
The Omron H3CA-8 is a versatile solid-state timer designed for precise time control in industrial applications. Featuring a compact DIN-sized (48 × 48 mm) housing, it offers digital settings and an LCD display for easy operation and monitoring.
Key Features
- Time Range: Adjustable from 0.1 seconds to 9,990 hours, accommodating a wide variety of timing requirements.
- Control Output: Equipped with a DPDT (Double Pole Double Throw) time-limit contact, supporting a resistive load of up to 3 A at 250 VAC.
- Display: Clear 3-digit LCD for straightforward time setting and status indication.
- Mounting Options: Suitable for both flush and surface mounting, providing flexibility in installation.
- Power Supply: Available in multiple voltage specifications, including 100/110/120 VAC, 200/220/240 VAC, 24 VDC, 100 VDC, and 110 VDC, to meet diverse application needs.
Specifications
- Operating Voltage Range: 85% to 110% of the rated supply voltage.
- Power Consumption: Approximately 10 VA for AC models and 1 W for DC models.
- Accuracy: Operating time accuracy of ±0.3% ±0.05 s, ensuring reliable performance.
- Reset Time: Maximum of 0.1 seconds, facilitating quick resetting between operations.
- Insulation Resistance: Minimum of 100 MΩ at 500 VDC, providing robust electrical insulation.
- Dielectric Strength: 2,000 VAC at 50/60 Hz for 1 minute between current-carrying and non-current-carrying parts.
- Vibration Resistance: Withstands 10 to 55 Hz with 0.75-mm double amplitude for 1 hour in each of three directions.
- Shock Resistance: Endures 980 m/s² for destruction and 98 m/s² for malfunction.
- Ambient Operating Temperature: -10°C to 55°C, suitable for various environmental conditions.
- Ambient Operating Humidity: 35% to 85%, accommodating different humidity levels.
- Electrical Life Expectancy: Minimum of 100,000 operations at 3 A, 250 VAC resistive load.
- Mechanical Life Expectancy: Minimum of 10 million operations under no load at 1,800 operations per hour.
The Omron H3CA-8 Digital Relay Timer is engineered to deliver precise and reliable timing control, making it an ideal choice for a wide range of industrial automation applications.









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