Rails Selection Guide: Technical Criteria & Application Standards
Rails selection guide: technical parameters, mounting and compliance standards, and Gwest, KSN, TP Elektrik comparison.
A panel rail (DIN mounting rail) is a metal or plastic carrier profile on which miniature circuit breakers, residual current devices, contactors, terminal blocks and similar modular devices are snapped in place inside a panel. It is used in distribution, control and automation panels to line up devices at the same level so that they can be removed and installed. This page includes Gwest's galvanized slotted and solid rails, 35 mm wide and 7.5 mm deep, in 30 cm, 1 m and 2 m lengths, Konsan's slotted W MCB rails, and TP Elektrik's plastic rails and rail holder. A width of 35 mm and a depth of 7.5 mm is the top-hat rail size defined in EN 60715, on which most modular devices are mounted. Choose the rail by the profile size the devices to be installed require, whether it is slotted or solid, its material, and a length that fits the panel width. On a slotted rail, screws pass through the ready-made holes, while a solid rail is drilled according to the mounting points. A panel mounting rail should not be confused with a track spotlight rail or a busbar that distributes power: the mounting rail carries devices, and the power connection is made separately with cable or busbar. The Rails category on Welibaba includes 16 active models from leading manufacturers such as Gwest, KSN, TP Elektrik.
Key Technical Parameters for Selecting Rails
To specify the right Rails model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Length | 1 m, 2 m, 30 cm | Verify against project schedule and load calculation |
| Outer Width | 35 mm | Verify against project schedule and load calculation |
| Depth | 7.5 mm | Verify against project schedule and load calculation |
| Material | Galvaniz Kaplama | 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 Panels and Equipment.
- 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 Empty Combination Boxes, Junction and Combination Box Accessories, Panel Accessories.
Frequently Asked Questions
What is the first parameter to check when selecting Rails?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Rails page to narrow down compatible series.
Which Rails brands are available on Welibaba?
Welibaba currently stocks 16 active models in this category from manufacturers including Gwest, KSN, TP Elektrik, complete with verified specifications and unit pricing.
How can I compare Rails 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.