ST3P Power-On Delay Time Relay | 8-Pin | AC/DC Multi-Voltage
ST3P Power-On Delay Time Relay | 8-Pin | AC/DC Multi-Voltage
ST3P Series Power-On Delay Time Relay with 8-Pin Base
The ST3P Series Power-On Delay Time Relay is a reliable and CE-certified timing relay designed for industrial and commercial electrical control systems. Available in multiple voltage variants (AC 110V, AC 220V, AC 380V, DC 24V) and models (A through G), this time relay delivers precise delayed switching with a delay accuracy of ≤10%, making it ideal for automation panels, motor control circuits, and sequential timing applications.
With its compact design and universal 8-pin socket base, installation is quick and straightforward. The relay features 2 groups of delayed power-on contacts, giving you flexible circuit control options in a single compact unit. Made in Mainland China.
Key Features
- Power-On Delay Mode: Triggers output contacts after a set time delay from power application — perfect for sequential start-up control
- Multi-Voltage Compatibility: Available in DC 24V, AC 110V, AC 220V, and AC 380V to suit a wide range of electrical systems
- 2 Groups of Delayed Contacts: Dual output contact groups for flexible wiring configurations
- Delay Accuracy ≤10%: Consistent, repeatable timing for dependable automation sequences
- CE Certified: Meets European safety and electromagnetic compatibility standards
- 8-Pin Base Included: Universal socket base for tool-free relay swapping and easy maintenance
- Lightweight & Compact: Weighs just 0.135 kg, fits neatly inside standard control panels and enclosures
- Multiple Models (A–G): Choose the timing range model that best suits your application requirements
Specifications
| Model | ST3P-A / B / C / D / E / F / G |
| Working Mode | Power-On Delay |
| Voltage Options | DC 24V | AC 110V | AC 220V | AC 380V |
| Contact Groups | 2 Groups (Delayed Power-On) |
| Delay Accuracy | ≤10% |
| Pin Base | 8-Pin Socket Base (Included) |
| Certification | CE |
| Weight | 0.135 kg |
| Country of Origin | Made in China |
What's in the Box
- 1 × ST3P Series Time Relay (model of your choice)
- 1 × 8-Pin Socket Base
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Frequently Asked Questions
Q: What voltage should I select for the ST3P power-on delay relay?
A: The ST3P series is available in DC 24V, AC 110V, AC 220V, and AC 380V. Choose the voltage that matches your control circuit's supply voltage. For most industrial panels in the US, AC 110V or AC 220V are common choices, while AC 380V suits three-phase European installations and DC 24V is standard for PLC and low-voltage control systems.
Q: What is the difference between the ST3P-A, B, C, D, E, F, and G models?
A: Each letter variant (A through G) corresponds to a different timing range. For example, model A covers a shorter delay range while later models (E, F, G) cover progressively longer delay intervals. Select the model whose timing range best matches your application's required delay duration.
Q: Is the 8-pin base included with the ST3P time relay?
A: Yes, an 8-pin socket base is included with each ST3P relay. The base allows for tool-free relay removal and replacement, which simplifies maintenance in control panel environments.
Q: What does "power-on delay" mean for this relay?
A: Power-on delay means the relay's output contacts do not switch immediately when power is applied. Instead, they switch after a pre-set time interval has elapsed. This is useful for staggering the start of motors, lights, or other equipment to prevent simultaneous inrush current or to create controlled sequential start-up sequences.