ST2P-E 5A Time Delay Relay – 19 Ranges 1s-24h Panel Mount

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Description:

ST2P-E Compact Time Relay – Wide Voltage, 19 Timing Ranges, Lightweight Design

The ST2P-E is a compact, panel‑mount time relay engineered to deliver precise and reliable delay control across a broad spectrum of industrial, commercial, and automation applications. Featuring an ultra‑wide universal power supply (DC12‑48V and AC12‑380V 50Hz), low power consumption, and a robust 5A output contact, this relay offers exceptional flexibility in a space‑saving 40×50 mm panel cutout. With nineteen selectable time ranges – covering seconds (1s, 2s, 3s, 6s, 12s, 30s, 60s), minutes (2m, 3m, 5m, 6m, 12m, 30m, 60m), and hours (3h, 6h, 12h, 24h) – the ST2P‑E can handle everything from short machine pulses to long‑duration cycles in HVAC, lighting, motor control, and process automation. Weighing only 50g, it is one of the lightest relays in its class, making it ideal for portable equipment and weight‑sensitive applications. Its robust construction, high insulation resistance, and long mechanical life make it an excellent choice for control panels, OEM equipment, and field upgrades worldwide.

Universal Power Supply for Global Deployment

The ST2P‑E operates on an exceptionally wide voltage range: DC12V‑48V and AC12V‑380V (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 380V, covering industrial power systems across the globe. 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.

Ultra‑Lightweight and Compact Panel‑Mount Design

Designed for front‑panel installation, the ST2P‑E requires a 40×50 mm mounting hole – an exceptionally compact footprint that allows high‑density placement on control cabinets, machine consoles, or portable test boxes. Weighing only 50g, it is one of the lightest time relays available, making it particularly suitable for applications where weight is a concern, such as mobile equipment, portable test instruments, or aerospace and transportation systems. The front panel features a clear adjustment dial and a rotary switch to select the desired time range from the nineteen available options. The intuitive layout enables quick, tool‑free setting of the delay, reducing setup errors and training time.

Nineteen Selectable Time Ranges for Maximum Flexibility

The ST2P‑E offers nineteen independent time ranges, each continuously adjustable via a built‑in potentiometer. The available ranges are organized into three groups:

Seconds (S): 1 second, 2 seconds, 3 seconds, 6 seconds, 12 seconds, 30 seconds, 60 seconds – ideal for short delays in packaging machinery, welding timers, pulse stretching, and anti‑short cycling for compressors.

Minutes (M): 2 minutes, 3 minutes, 5 minutes, 6 minutes, 12 minutes, 30 minutes, 60 minutes – perfect for conveyor belt sequencing, fan delay after motor stop, defrost cycles, and pump alternation.

Hours (H): 3 hours, 6 hours, 12 hours, 24 hours – excellent for long‑duration processes such as irrigation scheduling, environmental chamber cycling, filter maintenance reminders, and equipment soak times.

This broad selection covers a wide spectrum of industrial and commercial timing needs – from brief 1‑second delays in high‑speed packaging lines to 24‑hour cycles in HVAC defrost or irrigation systems. The user simply turns the range selector to the desired unit (seconds, minutes, or hours), selects the specific value, 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 ST2P‑E 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 ST2P‑E 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 ST2P‑E 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 ST2P‑E make it ideal for countless applications:

· Motor Control: Star‑delta starting (using 1‑6 seconds), anti‑short cycling for compressors (30‑60 seconds).
· Conveyor Systems: Delayed start of belt sections (1‑12 seconds), accumulation zone timing (3‑30 seconds).
· HVAC: Fan delay on/off (30‑60 seconds), defrost timing (6‑30 minutes), filter maintenance reminders (3‑24 hours).
· Lighting Control: Staircase lighting delay (1‑30 seconds), corridor occupancy control (2‑12 minutes), signage flashing.
· Pump Control: Alternating pump operation (12‑60 minutes), well pump delay after power restoration (3‑12 minutes).
· Industrial Machinery: Welding timers (1‑6 seconds), cooling fan delays (30‑60 seconds), batch process timing (5‑30 minutes).
· Irrigation & Agriculture: Automated watering cycles (3‑24 hours).
· Test Equipment: Aging tests, vibration table cycles, data logging intervals (hours).
· Portable Equipment: Due to its 50g weight, ideal for mobile testing rigs and field instruments.

Easy Installation and Operation

Mounting the ST2P‑E is straightforward: cut a 40×50 mm rectangular hole in the panel, insert the relay, and secure it with the included brackets. Connect the power supply (DC12‑48V or AC12‑380V) and the load to the appropriate terminals. Select the time range using the front‑panel rotary switch, 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 ST2P‑E Compact Time Relay combines an ultra‑lightweight (50g) and space‑saving 40×50 mm panel‑mount design, universal AC/DC power supply (12‑380V AC / 12‑48V DC), low power consumption, and a robust 5A output with nineteen selectable time ranges covering seconds, minutes, and hours. Its high insulation resistance, dielectric strength, and long mechanical life ensure reliable operation in demanding industrial environments. Whether you need a precise 1‑second delay for a packaging line or a 24‑hour cycle for an irrigation system, the ST2P‑E delivers consistent, repeatable performance. For engineers, panel builders, and maintenance professionals seeking an affordable, versatile, and exceptionally lightweight timing solution, the ST2P‑E is the perfect choice. Install it once and enjoy years of dependable service.

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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.