Hager Comb Rail - Grey - KB263A
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Product Information
Full details
The Hager KB263A Comb Rail is an essential component for professional electricians and installers looking to streamline the wiring of 2-pole circuit breakers within an electrical enclosure. This insulated busbar provides a robust, organized, and safe distribution of power across up to 6 devices, significantly reducing installation time and eliminating the need for complex jumper cabling. While it offers superior efficiency and reliability for 63A applications, installers must ensure their specific circuit breaker layout aligns with the 18mm module spacing and 2-pole configuration before installation.
All features
| Colour | Grey |
|---|---|
| Model Part Number | KB263A |
| Brand | Hager |
Extended Product Information
FAQs
Can the KB263A be used for single-pole breakers?
No, this specific model is designed exclusively for 2-pole configurations.
What is the maximum number of devices I can connect?
This rail is compatible with up to 6 devices (assuming each is 2 modules wide).
Is it possible to cut the comb rail if I only need it for 3 devices?
Yes, it can be cut to length. Always insulate the cut end to prevent accidental contact.
Does this rail come with end caps?
End caps are generally recommended to be sourced separately if needed after cutting, though standard practice is to ensure the cut is clean and isolated.
What does the 18mm divider size represent?
It refers to the standard DIN module width, ensuring the pins line up perfectly with standard breaker terminals.
Is this rail RoHS compliant?
Yes, the Hager KB263A is compliant with RoHS environmental standards.
Troubleshooting
Difficulty inserting pins into breaker terminals
Ensure the breaker terminal screws are fully backed out to provide enough clearance for the pin.
Rail does not align with breaker terminals
Verify that all breakers are standard 18mm width units and that the comb rail is seated correctly on the DIN rail.
Loose connection after tightening
Check that the pin is fully inserted into the terminal cage and re-torque the screw to the breaker's recommended specification.
Pros and Cons
Pros
- Significantly reduces wiring complexity compared to traditional cables
- Ensures a clean, professional finish inside electrical enclosures
- High 63A current capacity suitable for demanding circuits
- Easy to trim to fit specific panel layouts if required
- Compliant with RoHS environmental standards
Cons
- Limited to 2-pole configurations only
- Requires precise alignment with breaker terminal slots
- Not suitable for mixed-width modular devices
Setup, Compatibility & Care
Before installation, ensure the main power supply is disconnected and verified as dead. Align the comb rail pins with the input terminals of your 2-pole breakers. If your row has fewer than 6 devices, the rail can be carefully cut to the desired length using a fine-tooth hacksaw; ensure that any exposed copper at the cut end is properly capped or insulated to meet safety standards. Always confirm that the terminal screws on the breakers are torqued to the manufacturer's specified setting to ensure a high-pressure contact. Periodic inspection during routine enclosure maintenance is recommended to ensure no terminal screws have loosened due to thermal expansion.