H3BA-8 5A Timer Relay – 4 Ranges 0.05s-100h Delay

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Description

H3BA-8 Compact Time Relay – Wide AC/DC Voltage, Four Time Ranges with 10h Extended Option

The H3BA-8 is a versatile, panel‑mount time relay engineered for precise delay control across a wide range of industrial, commercial, and automation applications. Featuring a universal power supply (DC12‑48V and AC24‑415V 50Hz), low power consumption, and a robust 5A output contact, this relay offers exceptional flexibility in a space‑saving 45×45 mm panel cutout. With four selectable time ranges (0.05‑0.4s, 0.5‑5s, 5‑50s, 1‑10s / 0.5‑5m, 1‑10m, 5‑50m, 10‑100m / 0.5‑5h, 1‑10h, 5‑50h, 10‑100h) and an extended 10h time unit for long‑duration applications, the H3BA‑8 can handle everything from short machine pulses to extended cycles in HVAC, lighting, motor control, and process automation. Weighing ≈170g, it is lightweight yet durable, making it an ideal choice for control panels, OEM equipment, and field upgrades worldwide.

Universal Power Supply for Global Deployment

The H3BA‑8 operates on a wide voltage range: DC12V‑48V and AC24V‑415V (50Hz). This universal compatibility allows the relay to be used in virtually any control system – from low‑voltage DC logic circuits (e.g., PLC outputs, battery‑backed systems, sensors) to standard AC mains up to 415V, covering industrial power systems across the globe. The extended AC voltage range (up to 415V) makes this relay particularly suitable for applications in regions with higher nominal voltages (e.g., 380V, 400V, 415V systems). This eliminates the need for multiple relay models for different voltages, simplifying inventory and reducing costs. The power consumption is remarkably low: DC1.0W / AC1.0VA, which minimizes heat generation inside enclosures and reduces the load on control circuits, making it suitable for energy‑sensitive applications and densely populated panels.

Compact Panel‑Mount Design

Designed for front‑panel installation, the H3BA‑8 requires a 45×45 mm mounting hole – a compact footprint that allows high‑density placement on control cabinets, machine consoles, or portable test boxes. Weighing ≈170g, it is lightweight yet sturdy. The front panel features a clear adjustment dial and a rotary switch to select the desired time range from the four available options. The intuitive layout enables quick, tool‑free setting of the delay, reducing setup errors and training time. The 8‑pin base (hence the model designation H3BA‑8) ensures compatibility with standard relay sockets, facilitating easy installation and replacement.

Four Time Ranges with Extended 10h Option

The H3BA‑8 offers four selectable time ranges, each continuously adjustable via a built‑in potentiometer. The available ranges are:

Time Unit Range 1 Range 2 Range 3 Range 4
Seconds (s) 0.05‑0.4s 0.5‑5s 5‑50s 10‑100s
Minutes (m) 0.5‑5m 1‑10m 5‑50m 10‑100m
Hours (h) 0.5‑5h 1‑10h 5‑50h 10‑100h
10 Hours (10h) 0.5‑5h? 1‑10h? 5‑50h? 10‑100h?

(Note: The extended 10h unit allows long‑duration timing up to 100 hours, making the H3BA‑8 suitable for weekly maintenance reminders, extended irrigation cycles, and other very long‑duration applications.)

This broad selection covers a wide spectrum of industrial and commercial timing needs – from brief 0.05‑0.4s delays in high‑speed packaging machinery to 10‑100h cycles in HVAC defrost or irrigation systems. The user simply turns the range selector to the desired unit (seconds, minutes, hours, or 10h) and then adjusts the potentiometer to the exact delay required.

Robust Output Contact for Direct Load Switching

Equipped with a control output rated at 5A at 220V AC, the H3BA‑8 can directly switch a variety of loads, including contactor coils, solenoid valves, small motors, indicator lamps, fans, and resistive heaters. The output contact is designed for long‑term reliability, with a mechanical life of 10⁷ operations and an electrical life of 10³ operations at rated load. This durability makes it suitable for high‑cycle applications such as packaging machinery, conveyor systems, and repetitive industrial processes.

High Insulation and Dielectric Strength for Safety

Safety is paramount in any electrical installation. The H3BA‑8 offers an insulation resistance of ≥100MΩ at DC500V, ensuring excellent isolation between the power supply, timing circuit, and output contact. Dielectric strength is rated at 1500V AC between coil/electronics and contacts (BCC) and 1000V AC between open contacts (BOC), guaranteeing protection against voltage surges and reducing the risk of arcing or breakdown. These characteristics make the relay suitable for use in industrial environments where electrical noise and transients are common.

Reliable Performance in Diverse Environments

The H3BA‑8 is built to operate reliably under typical industrial conditions:

· Operating temperature: -10°C to +50°C – suitable for unheated workshops, outdoor enclosures, and climate‑controlled rooms.
· Humidity: 35% to 85% (non‑condensing) – performs well in most environments without risk of moisture damage.

These specifications ensure stable timing accuracy and long life even in moderately demanding settings.

Typical Applications

The versatile time ranges of the H3BA‑8 make it ideal for countless applications:

· Motor Control: Star‑delta starting (using 0.5‑5s or 10‑100s), anti‑short cycling for compressors (5‑50s).
· Conveyor Systems: Delayed start of belt sections (1‑10s), accumulation zone timing (5‑50s).
· HVAC: Fan delay on/off (10‑100s), defrost timing (5‑50m), filter maintenance reminders (10‑100h).
· Lighting Control: Staircase lighting delay (10‑100s), corridor occupancy control (1‑10m), signage flashing.
· Pump Control: Alternating pump operation (10‑100m), well pump delay after power restoration (5‑50m).
· Industrial Machinery: Welding timers (0.5‑5s), cooling fan delays (5‑50s), batch process timing (10‑100m).
· Irrigation & Agriculture: Automated watering cycles (10‑100h).
· Test Equipment: Aging tests, vibration table cycles, data logging intervals (hours).
· Weekly Maintenance Scheduling: Extended timing using the 10h unit for maintenance reminders, cleaning schedules, or filter replacement alerts.

Easy Installation and Operation

Mounting the H3BA‑8 is straightforward: cut a 45×45 mm square hole in the panel, insert the relay, and secure it with the included brackets. Connect the power supply (DC12‑48V or AC24‑415V) and the load to the appropriate terminals. Select the time unit (seconds, minutes, hours, or 10h) using the front‑panel selector, then rotate the adjustment dial to the exact delay required. No complex programming or external tools are needed. The clear terminal labeling and logical layout minimize wiring errors and reduce installation time.

Conclusion

The H3BA‑8 Compact Time Relay combines a space‑saving 45×45 mm panel‑mount design, a universal AC/DC power supply (24‑415V AC / 12‑48V DC), low power consumption, and a robust 5A output with four selectable time ranges covering seconds, minutes, hours, and extended 10‑hour units. With timing capabilities ranging from 0.05 seconds to 100 hours, it offers exceptional flexibility for both short and long‑duration control tasks. Its high insulation resistance, dielectric strength, and long mechanical life ensure reliable operation in demanding industrial environments. Whether you need a precise 0.05‑0.4s delay for a packaging line or a 100‑hour cycle for an irrigation system, the H3BA‑8 delivers consistent, repeatable performance. For engineers, panel builders, and maintenance professionals seeking an affordable, versatile, and durable timing solution, the H3BA‑8 is the perfect choice. Install it once and enjoy years of dependable service.

Applications:

Competitive Advantage:

Advantages of Wenzhou DAQUAN Electric Co., Ltd

1. Innovation Leadership
With 258 patents and 27 years of industry experience, we lead in R&D of industrial control devices like relays and timers, ensuring cutting-edge product performance.

2. Global Certifications
Our products hold CE, ROHS, IEC, TUV certifications plus ISO9001, meeting strict international standards for seamless global market access.

3. Scale Supply Stability
Backed by a 7,800㎡ factory, 499-strong team, and 70M RMB annual output, we guarantee efficient production and timely delivery for bulk orders.