Introduction to ST3-2.5D Series Spring-Loaded Diode Terminal Blocks

Zhejiang Sipun Electric Co., Ltd is proud to present the ST3-2.5D Series Spring-Loaded Diode Terminal Blocks, a high-performance solution designed for industrial circuit applications. This product combines advanced engineering, durable materials, and reliable functionality to meet the rigorous demands of modern electrical systems.


Product Overview

The ST3-2.5D Series features a spring-loaded diode terminal block engineered for secure and efficient electrical connections. Key specifications include:

  • Rated Voltage: 800V
  • Rated Current: 24A
  • Conductor Material: High-conductivity red copper (ensuring minimal resistance and superior current transmission).
  • Housing Material: Virgin PA66 (non-recycled), offering exceptional insulation, heat resistance, and mechanical strength.

Key Features & Advantages

  1. Robust Construction
    • The use of virgin PA66 (free from recycled content) guarantees long-term stability, flame retardancy (UL94 V-0 compliance), and resistance to environmental stressors such as heat, chemicals, and abrasion.
    • Red copper conductors ensure optimal conductivity and corrosion resistance, critical for high-current applications.
  2. Spring-Loaded Technology
    • Tool-free installation with self-adjusting spring clamps enables quick, secure wire connections (suitable for solid and stranded wires).
    • Vibration-resistant design maintains stable connections in industrial environments.
  3. Integrated Diode Functionality
    • Built-in diodes provide reverse polarity protection and voltage spike suppression, safeguarding sensitive components in circuits.
  4. Space-Efficient Design
    • Compact structure saves panel space while supporting high-density wiring layouts.

Applications in Industrial Circuits

Diode terminal blocks play a vital role in industrial electrical systems by:

  • Preventing Reverse Current Damage: Diodes block unintended reverse currents, protecting motors, controllers, and power supplies.
  • Suppressing Voltage Transients: They absorb voltage spikes caused by inductive loads (e.g., relays, solenoids), enhancing system reliability.
  • Ensuring Signal Integrity: In control circuits, diodes isolate signals and prevent interference between interconnected devices.

Typical Use Cases:

  • Motor control panels
  • PLC (Programmable Logic Controller) systems
  • Power distribution units
  • Renewable energy inverters and converters
  • Automation machinery

Why Choose ST3-2.5D Series?

Zhejiang Sipun Electric Co., Ltd prioritizes quality and safety. The ST3-2.5D Series is rigorously tested to comply with international standards, ensuring performance under extreme conditions. By using non-recycled PA66 and premium red copper, we deliver a product that minimizes downtime, reduces maintenance costs, and extends the lifespan of industrial equipment.


For more details, contact Zhejiang Sipun Electric Co., Ltd to explore how the ST3-2.5D Series can optimize your electrical systems.


Zhejiang Sipun Electric Co., Ltd
Innovating Connections, Powering Industries

ST3-2.5D


Post time: Mar-31-2025