Choosing the right terminal block models is critical when placing bulk orders for electrical or automation projects. The wrong model could result in delays, compatibility issues, or even failed installations. That’s why atNingbo Zhongbo Photovoltaic Technology Co., Ltd., we guide our global clients on selecting the most reliable and in-demand models when theybuy terminal blocks in bulk.
With over 14 years of production and export experience, we’ve identified several top-performing terminal block models widely used across industries—from control panels to power distribution systems.
🔧 1. ZB128 Series – Screw Terminal Block (5.08 mm pitch)
This is a widely used model inindustrial control panels,automation wiring, andrelay modules. It offers:
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Secure screw connections
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PA66 flame-retardant housing
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UL/CE certifications
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2 to 24 poles available
Great for mass installations and compatible with most PLC enclosures.
🔌 2. ZB301 Series – PCB Mount Terminal Block
Designed for direct mounting on circuit boards, DG301 is a staple in:
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Automation controllers
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Power supply PCBs
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HVAC control units
It provides stable wire retention and long-term electrical reliability.
🧩 3. 15EDGK Series – Pluggable Terminal Block
For projects that require easy maintenance or modular replacements, the15EDGKseries is ideal. Suitable for:
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Building automation systems
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I/O modules
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LED drivers
You can unplug wiring modules without disturbing the rest of the circuit.
🔲 4. HB8500, ZB45C– Barrier Terminal Blocks
These are used in:
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Power distribution cabinets
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Machinery wiring
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Switchgear
Strong and sturdy, these barrier-style blocks help separate circuits and are ideal for higher current applications.
At Zhongbo, all the above models are available in bulk, with full support for:
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OEM branding and packaging
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Custom pin counts and colors
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Export-ready documentation (COC, Form E, etc.)
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Fast delivery via Ningbo Port
We’ve helped buyers in the U.S., EU, South America, and Southeast Asia select the right models for large-scale installations. We also providesamples and technical datasheetsbefore production.
📩 Contact Zhongbo to Get Model Recommendations
If you’re ready to source terminal blocks in large volumes, reach out to us for technical support and model selection assistance.
📌Company: Ningbo Zhongbo Photovoltaic Technology Co., Ltd.
🏭Address: No. 118 Xiaoxin Rd, Xiaolin Town, Cixi, Ningbo, Zhejiang Province
📧Email:chunni@nbzhongbo.com
🌍Website:www.nbzbo.com
