Panel Ground Terminal Blocks Selection Guide: Technical Criteria & Application Standards
Panel Ground Terminal Blocks selection guide: technical parameters, mounting and compliance standards, and Onka, TP Elektrik comparison.
A panel ground terminal block is a bar-shaped multi-connection collector terminal block whose in-line connection holes take the protective conductors. It is used in distribution and control panels to collect the protective conductors of output circuits at a common point and connect them to the panel's earthing line. The category lists Onka models with hole counts such as 5, 7, 10, 12, 15 and 22 at 80 A (9x6.5 mm), 160 A (12x7 mm) and 250 A (15x10 mm), together with a 1-meter, 126-hole model; TP Elektrik's 5-way, 10-way and 14-way yellow ground terminal blocks are also available. Choose the hole count by the number of protective conductors to connect and the spare capacity to leave, the busbar size and rated current by the project values, and the length by the mounting location in the panel. It should not be confused with the yellow-green ground terminal block mounted on the rail: a DIN rail terminal block connects the conductor to the mounting rail, while a panel ground terminal block collects many conductors on a common busbar. The Panel Ground Terminal Blocks category on Welibaba includes 24 active models from leading manufacturers such as Onka, TP Elektrik.
Key Technical Parameters for Selecting Panel Ground Terminal Blocks
To specify the right Panel Ground Terminal Blocks model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Current | 160 A, 250 A, 80 A | Verify against project schedule and load calculation |
| Terminal Block Hole Count | 10 Delikli, 12 Delikli, 126 Delikli, 15 Delikli | Verify against project schedule and load calculation |
| Color | Sarı | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in Terminal Blocks.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Barrier Terminal Blocks, Junction Box Terminal Blocks, Terminal Block Accessories and Spares.
Frequently Asked Questions
What is the first parameter to check when selecting Panel Ground Terminal Blocks?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Panel Ground Terminal Blocks page to narrow down compatible series.
Which Panel Ground Terminal Blocks brands are available on Welibaba?
Welibaba currently stocks 24 active models in this category from manufacturers including Onka, TP Elektrik, complete with verified specifications and unit pricing.
How can I compare Panel Ground Terminal Blocks models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.