Automation Terminal Blocks | DG500 & DG301 for Control Systems

As industrial automation evolves toward smarter, more interconnected systems, the need for reliable electrical connectivity is more critical than ever. At the heart of every control cabinet or programmable logic controller (PLC) lies a small but essential component: theterminal block.

For automation equipment manufacturers and industrial panel builders, sourcing high-quality terminal blocks is key to system safety, uptime, and serviceability. AtNingbo Zhongbo Photovoltaic Technology Co., Ltd., we specialize in producing custom and standard terminal blocks used in thousands of industrial control applications worldwide.

⚙️1. Why Terminal Blocks Matter in Automation

Terminal blocks serve as the secure interface between wiring and automation devices. They enable safe, flexible connections for:

Power distribution
Signal input/output (I/O)
Sensor and actuator wiring
PLC and relay control circuits

In automation, signal integrity and connection reliability are non-negotiable. Zhongbo’s terminal blocks ensure stable performance under continuous use and vibration, especially in fast-paced industrial environments.

🔌2. Best Terminal Block Types for Automation

We supply a wide range of terminal blocks commonly used in industrial control systems, including:

ZB128 Series (Screw-Type):Ideal for secure wiring of sensors, relays, and contactors in control cabinets.
ZB350 Series:Miniature versions for compact PLC enclosures and embedded modules.
Barrier Terminal Blocks:Provide clear separation between circuits—useful for high-voltage or multi-channel systems.
ZB301 Series (PCB Mount):Used in I/O modules, drives, and programmable devices.

Each series is available with customization options, including color coding, OEM branding, and pitch sizes ranging from 3.5mm to 5.08mm.

📈3. Industrial Use Cases Worldwide

Automation equipment manufacturers and integrators use Zhongbo terminal blocks in:

Factory automation
Building management systems
Conveyor and packaging systems
HVAC and motor controls
Water treatment & energy management

Our clients spanNorth America,Europe, and theMiddle East, all requiring certified, scalable components for export-compliant systems.

🔧4. Why Automation OEMs Choose Zhongbo

AtNingbo Zhongbo Photovoltaic Technology Co., Ltd., we understand the automation market’s demand for consistency, speed, and compliance. That’s why we offer: