Sourcing terminal block manufacturers from China takes time and careful judgment. The supplier landscape is crowded. Product types vary widely. And not every claim holds up under scrutiny.
Terminal blocks alone span dozens of configurations. This includes screw-type DIN rail connectors, spring-clamp blocks for fast installation, and high-current units built for industrial power distribution. The challenge isn’t finding suppliers. It’s knowing which ones are worth your attention.
This guide focuses on manufacturers with proven depth, reliable output, and the range to match real-world applications. Here’s who consistently delivers—and who belongs on your shortlist.
What Is a Terminal Block?
A terminal block is a modular connector that joins two or more electrical conductors without a permanent splice. It provides a clean, safe, and serviceable connection point inside electrical panels and control cabinets.
Terminal blocks come in many types. Feed-through blocks pass a single conductor from one side to the other. Ground terminals provide a dedicated earth connection. Fused and disconnect types add protection and isolation. And then there are distribution blocks—a specific type designed to branch one incoming power source into multiple outgoing circuits. More on that distinction shortly.
Top 15 Terminal Block Manufacturers in China
| No | Manufacturer | Core Products & Strength |
| 1 | HYJXH (Haiyan Electric) | Distribution blocks (all current ratings); wide variety; custom design; fast delivery |
| 2 | Chint Electric | Broad electrical range; large-scale manufacturing |
| 3 | DEHN (China) | Surge & earthing blocks; infrastructure use |
| 4 | Wonke Electric | Screw, spring, push-in; stable supply |
| 5 | Leipole Electric | Spring-clamp & push-in; building automation |
| 6 | Dinkle International | DIN rail, PCB, pluggable; global export |
| 7 | Ningbo Degson Electronics | Pluggable, screw, spring, PCB-mount |
| 8 | Shanghai Xiapu Electric | Medium & high-current; power distribution |
| 9 | Supu Electric | Standard DIN rail; cost-effective volume supply |
| 10 | Wieland Electric (China) | Pluggable connector systems; industrial machines |
| 11 | Camsco Electric | Screw & spring; stable export quality |
| 12 | Morsettitalia (China) | Industrial blocks; high reliability |
| 13 | Yuyao Lianhe Electrical | DIN rail; budget projects |
| 14 | Zhejiang Tianzheng Electric | Ground, fused, knife-disconnect; wide coverage |
| 15 | Nanjing Sub Electric | Standard DIN rail; mid-range pricing |
1. HYJXH (Haiyan Electric)
Based in Haiyan, Zhejiang, Haiyan Electric is built around one core function: power distribution and cable branching. Their terminal block range covers feed-through, fused, ground, and high-current types. But their real strength lies in distribution blocks, where their product depth and variety are unmatched among Chinese manufacturers.
Their range covers multiple current ratings and application scenarios. From residential and commercial panels to industrial power distribution and energy storage systems. That breadth means one-stop sourcing across your full project needs.
Why Haiyan Electric stands out:
- Wide product variety across current ratings and configurations
- One-stop purchasing—distribution blocks, junction boxes, main cable branch connectors, neutral/earth terminal bars, and energy storage connectors
- Custom design capability for non-standard specifications
- High output capacity for large-volume orders
- Fast delivery for time-sensitive panel builds
2. Chint Electric
Chint is one of China’s largest electrical manufacturers. It is reliable for broad component sourcing, though terminal blocks are one part of a very large catalog.
3. DEHN (China Operations)
DEHN brings German engineering to Chinese manufacturing. It specializes in surge protection and earthing terminal blocks for infrastructure, telecom, and renewable energy projects.
4. Wonke Electric
Wonke serves panel builders and distributors who need screw-type, spring-clamp, and push-in terminal blocks without inconsistent stock.
5. Leipole Electric
Based in Zhejiang, Leipole focuses on building automation and HVAC control panel applications. Their spring-clamp and push-in lines are designed for installation speed.
6. Dinkle International
Taiwan-headquartered with substantial China production, Dinkle covers DIN rail, PCB-mount, and pluggable terminal blocks with strong global export reach.
7. Ningbo Degson Electronics
Degson has invested in genuine in-house testing infrastructure. Their range covers pluggable, screw, spring, and PCB-mount terminal blocks across industrial, telecom, and rail applications.
8. Shanghai Xiapu Electric
Xiapu focuses on medium- and high-current terminal blocks for power distribution cabinets and renewable energy installations.
9. Supu Electric
Supu is a Zhejiang-based manufacturer serving electrical wholesalers and panel builders who need standard DIN rail terminal block configurations at competitive prices.
10. Wieland Electric (China)
Wieland’s Chinese manufacturing carries the same positioning as the German parent. They have higher-specification products for industrial and machine-building applications. T.
11. Camsco Electric
Taiwan origin, China production, broad distribution across Southeast Asia and the Middle East. Camsco’s screw and spring terminal block lines cover standard industrial panel requirements.
12. Morsettitalia (China Operations)
Italian brand, China-produced. Morsettitalia’s terminal blocks are used in industrial automation, marine, and railway applications where contact reliability is a hard requirement.
13. Yuyao Lianhe Electrical
Lianhe operates in the lower-to-mid price segment. Standard DIN rail terminal blocks for electrical wholesalers and general panel building applications.
14. Zhejiang Tianzheng Electric
Tianzheng covers more ground than most—ground terminals, knife-disconnect types, and fused variants alongside standard feed-through configurations. Their primary market is building electrical installations, control panels, and switchgear.
15. Nanjing Sub Electric
Sub Electric rounds out the list with a mid-range catalog of standard DIN rail terminal block types for industrial and commercial panels. Supplies both domestic and export customers at pricing that works for distributors.
Now, Here’s What Most Buyers Actually Need: The Distribution Block
Most people searching for terminal block manufacturers are ultimately trying to solve a power distribution problem. They need to branch one incoming cable into multiple outgoing circuits—cleanly, safely, and without overcomplicating the panel.That’s not a terminal block job. That’s a distribution block job.
Terminal Block vs. Distribution Block: The Key Difference
A terminal block connects or passes a conductor through a mechanical connection point. It’s a general-purpose device.
A distribution block does something more specific. It takes one incoming power source and branches it into multiple outgoing circuits. That’s its entire purpose. It does it better than any general terminal block ever could.
Need to branch a main cable into four, six, or twelve circuits inside a panel? A distribution block is the right tool. It keeps your panel clean, organized, and safe.
Most buyers don’t realize they need a distribution block until they see one. That gap is exactly what separates a general terminal block supplier from a true distribution specialist.
The FJ6/JTS2D series power distribution terminal blocks are suitable for power and circuit distribution in electrical control equipment, switchgear assemblies, distribution boxes, and multi-circuit enclosures.
INQUIRY NOWWhere Distribution Blocks Are Used
Distribution blocks show up across a wide range of applications:
- Residential panels—branching the main feed to individual circuit breakers
- Commercial distribution boards—higher current ratings, more poles, DIN rail mounting
- Industrial control panels—demanding environments with continuous duty cycles
- Power distribution cabinets—high-current blocks handling hundreds of amps
- Energy storage systems—specialized configurations for battery system characteristics
- Machinery and automation—modular designs requiring clean panel integration
What to Evaluate When Choosing a Supplier
Price is easy to compare. These factors matter more in practice:
- Product variety. Configuration depth varies enormously between suppliers. Current rating, pole count, conductor size, and mounting method all affect whether a product actually fits your application.
- Custom design capability. Standard configurations don’t always fit real-world panel layouts. A supplier who can work to your specs prevents costly workarounds downstream.
- One-stop sourcing. Sourcing distribution blocks, junction boxes, and terminal bars from one supplier simplifies procurement and reduces lead time risk.
- Output capacity and delivery. High factory output and fast turnaround matter when panel builds run on fixed schedules.
Among all 15 manufacturers on this list, HYJXH (Haiyan Electric) is the one built specifically around distribution blocks. Distribution is the focus—everything else supports it.
Key advantages include wide product variety across current ratings and configurations, in-house custom design for non-standard specs, and one-stop sourcing covering junction boxes, branch connectors, neutral/earth terminal bars, and energy storage connectors. They are all backed by high output capacity and fast delivery.
Explore their full range at haiyanele.com.
Frequently Asked Questions
What’s the difference between a terminal block and a distribution block?
A terminal block is the broad category. It is any device that mechanically connects electrical conductors. A distribution block is a specific type that branches one incoming power source into multiple outgoing circuits. All distribution blocks are terminal blocks, but not all terminal blocks are distribution blocks.
What current ratings do Chinese-made terminal blocks typically cover?
Standard DIN rail terminal blocks cover 10A to 125A for most panel applications. Specialists like Haiyan Electric offer high-current distribution blocks reaching hundreds of amps for industrial and energy storage applications. Always confirm the range matches your needs.
Can I get custom terminal block or distribution block configurations from Chinese manufacturers?
Most can’t. Manufacturers with in-house design capability handle non-standard pole counts, current ratings, or housing dimensions. Ask directly before committing. Haiyan Electric offers custom design as a core service.
What should I look for in distribution blocks for energy storage applications?
Energy storage systems have different electrical characteristics than standard AC distribution. Look for a supplier with dedicated energy storage products, not repurposed standard configurations. Application-specific product depth matters more than general brand recognition here.
How do I evaluate suppliers beyond unit price?
Compare configuration variety, current rating coverage, custom design capability, MOQ and lead times, output capacity, and related product range. A supplier covering your full application needs at a slightly higher unit price typically delivers a lower total procurement cost than a cheaper supplier with limited configurations.
