AC-KT - Rubber Cable Grommet For Split Cable Glands
Split Rubber Grommets for AC-KBL Cable Entry Plates & Split Cable Glands
Product Overview
These split rubber grommets provide a practical way to route and seal pre-terminated cables through compatible AC-KBL cable entry plates and split cable glands. Each grommet opens around the cable, so connectors and terminations can remain in place during installation.
The split construction is particularly useful for control-panel upgrades, machinery maintenance, retrofit work and phased installations where disconnecting a cable would add time or disrupt equipment. When correctly selected and fitted within the complete cable entry system, the module compresses around the cable jacket to support cable retention and help protect the enclosure from dust and water ingress.
The range includes small 20 × 20 mm modules for compact and high-density cable layouts, large 40 × 40 mm modules for heavier cables and conduits, and blanking options for unused entries.
How Do Split Rubber Grommets Work?
A split cable grommet opens along its pre-formed split and is positioned around an existing cable instead of being pushed over the cable end. The closed module is then fitted into the matching AC-KBL cable entry plate or compatible split cable gland. Assembly of the complete entry system applies compression around the cable jacket to help create a secure cable entry.
Measure the cable's actual outside diameter before selecting a module. Choose a product reference whose clamping range includes that measurement and follow the installation instructions supplied with the complete cable entry system. Contact our technical team if the cable is flat or corrugated, or if its measurement falls directly on the boundary between two sizes.
Typical Applications
- Electrical control panels and industrial enclosures
- Switchgear and distribution boards
- Machinery, robotics and factory automation
- Data centres and telecommunications equipment
- Renewable energy and energy storage systems
- Rail, utilities and infrastructure projects
- Retrofit, replacement and phased cable installations
For related cable entry components, view our split cable glands and locknuts or explore the wider rubber grommet range.
Key Features
- Fully split design: fits around pre-terminated and existing cables without removing connectors.
- Reduced installation downtime: suitable for maintenance, upgrades and retrofit cable entry work.
- Secure cable compression: closes evenly around the cable jacket when correctly installed in the compatible system.
- Ingress protection: supports protection up to IP65 as part of a correctly specified and assembled system.
- Flame-retardant material: self-extinguishing to UL 94 V-0.
- Wide static temperature range: suitable for temperatures from −40 °C to +90 °C.
- Halogen-free and silicone-free: suitable for installations where material composition is important.
- Flexible cable routing: options are available for round cables, flat cables and corrugated conduit.
- Modular configuration: combine cable modules and blanks to suit current requirements while retaining capacity for future additions.
Small Split Grommet Modules
The 20 × 20 mm modules suit smaller control, data and signal cables. Single-cable, double-cable and quadruple-cable options allow several cables to be routed through a compact entry frame, while the BTK blank module closes an unused module position.
Large Split Grommet Modules
The 40 × 40 mm modules provide a heavier-duty format for larger power cables, multi-core cables and corrugated conduit. The range covers single-cable clamping diameters from 16 mm to 35 mm and includes ATG adaptor and BTG blank modules.
Split Module Plugs & Blank Modules
Split module plugs and blank modules close spare cable positions during phased installations. They help the complete system maintain its intended ingress protection while reserving space for a future cable.
- Push-fit installation
- Removable when an additional cable is required
- Options for small and large module configurations
- Helps limit dust, moisture and air movement through unused entries
Why Choose Split Grommets for Pre-Terminated Cables?
Traditional closed grommets must normally be fitted before a connector is installed. A split grommet removes that restriction. It can be added around an assembled cable during initial installation or fitted later when an enclosure is upgraded, helping reduce unnecessary disconnection and rewiring.
Technical Data
| Specification | Details |
|---|---|
| Grommet Material | Synthetic rubber |
| Plug Material | Polyamide |
| Flame Retardancy | UL 94 V-0, self-extinguishing |
| Ingress Protection | Up to IP65, dependent on the complete system, cable fit and correct installation |
| Static Temperature Range | −40 °C to +90 °C |
| Construction | Halogen-free and silicone-free |
| Compliance | CE and RoHS |
| Compatible Systems | AC-KBL cable entry plates and compatible split cable glands |
| Small Module Size | 20 × 20 mm |
| Large Module Size | 40 × 40 mm |
Important: The stated IP rating applies to the correctly selected and assembled cable entry system, not to an individual loose grommet. Performance depends on the module selection, cable dimensions, compatible components and installation.
Size Chart
Small Split Grommet Modules – 20 × 20 mm
| Product Ref. | Module Type | Configuration | Cable Clamping Range |
|---|---|---|---|
| BTK | Blank module | No cable | N/A |
| KT 2 | Single cable | 1 cable | 2–3 mm |
| KT 3 | Single cable | 1 cable | 3–4 mm |
| KT 4 | Single cable | 1 cable | 4–5 mm |
| KT 5 | Single cable | 1 cable | 5–6 mm |
| KT 6 | Single cable | 1 cable | 6–7 mm |
| KT 7 | Single cable | 1 cable | 7–8 mm |
| KT 8 | Single cable | 1 cable | 8–9 mm |
| KT 9 | Single cable | 1 cable | 9–10 mm |
| KT 10 | Single cable | 1 cable | 10–11 mm |
| KT 11 | Single cable | 1 cable | 11–12 mm |
| KT 12 | Single cable | 1 cable | 12–13 mm |
| KT 13 | Single cable | 1 cable | 13–14 mm |
| KT 14 | Single cable | 1 cable | 14–15 mm |
| KT 15 | Single cable | 1 cable | 15–16 mm |
| KT 2/3 | Double cable | 2 cables | 2 × 3 mm |
| KT 2/4 | Double cable | 2 cables | 2 × 4 mm |
| KT 2/5 | Double cable | 2 cables | 2 × 5 mm |
| KT 2/6 | Double cable | 2 cables | 2 × 6 mm |
| KT 2/7 | Double cable | 2 cables | 2 × 7 mm |
| KT 2/8 | Double cable | 2 cables | 2 × 8 mm |
| KT 4/3 | Quadruple cable | 4 cables | 4 × 3 mm |
| KT 4/4 | Quadruple cable | 4 cables | 4 × 4 mm |
| KT 4/5 | Quadruple cable | 4 cables | 4 × 5 mm |
| KT 4/6 | Quadruple cable | 4 cables | 4 × 6 mm |
Large Split Grommet Modules – 40 × 40 mm
| Product Ref. | Module Type | Configuration | Cable Clamping Range |
|---|---|---|---|
| ATG | Adaptor module | Frame adaptor | N/A |
| BTG | Blank module | No cable | N/A |
| KT 16 | Single cable | 1 cable | 16–17 mm |
| KT 17 | Single cable | 1 cable | 17–18 mm |
| KT 18 | Single cable | 1 cable | 18–19 mm |
| KT 19 | Single cable | 1 cable | 19–20 mm |
| KT 20 | Single cable | 1 cable | 20–21 mm |
| KT 21 | Single cable | 1 cable | 21–22 mm |
| KT 22 | Single cable | 1 cable | 22–23 mm |
| KT 23 | Single cable | 1 cable | 23–24 mm |
| KT 24 | Single cable | 1 cable | 24–25 mm |
| KT 25 | Single cable | 1 cable | 25–26 mm |
| KT 26 | Single cable | 1 cable | 26–27 mm |
| KT 27 | Single cable | 1 cable | 27–28 mm |
| KT 28 | Single cable | 1 cable | 28–29 mm |
| KT 29 | Single cable | 1 cable | 29–30 mm |
| KT 30 | Single cable | 1 cable | 30–31 mm |
| KT 31 | Single cable | 1 cable | 31–32 mm |
| KT 32 | Single cable | 1 cable | 32–33 mm |
| KT 33 | Single cable | 1 cable | 33–34 mm |
| KT 34 | Single cable | 1 cable | 34–35 mm |
Use the measured cable outside diameter when selecting a product reference. For flat cables, corrugated conduit or unusual profiles, contact Cable Glands UK for assistance before ordering.
FAQs
What Is a Split Rubber Grommet?
A split rubber grommet is a pre-split sealing module that opens around an existing cable. Unlike a conventional closed grommet, it does not need to be passed over the end of the cable.
Can These Grommets Be Fitted Around Pre-Terminated Cables?
Yes. The split construction is designed for pre-terminated cables and existing installations. Connectors can remain attached while the grommet is positioned around the cable jacket.
How Do I Select the Correct Grommet Size?
Measure the cable's actual outside diameter in millimetres and choose a product reference whose clamping range includes that measurement. The module format must also match the compatible cable entry plate or split cable gland.
What Is the Difference Between the Small and Large Modules?
Small 20 × 20 mm modules are intended for smaller cables and high-density layouts. They include single-, double- and quadruple-cable options. Large 40 × 40 mm modules are designed for larger cable diameters and conduits, covering single-cable clamping ranges from 16 mm to 35 mm.
Do Split Rubber Grommets Provide an IP65 Seal?
They can support ingress protection up to IP65 when used as part of the specified compatible system and correctly installed around a cable within the stated clamping range. The final ingress rating is system dependent.
How Do I Seal an Unused Module Position?
Use a blank module or the appropriate removable module plug. This closes the spare entry while retaining the option to add another cable during a later installation phase.
Are the Grommets Suitable for Industrial Environments?
Yes. The synthetic rubber modules are flame-retardant to UL 94 V-0, halogen-free, silicone-free and specified for static temperatures from −40 °C to +90 °C. Confirm that the complete cable entry system meets the requirements of the application.
Need help with cable outside diameters, module layouts or project quantities? Contact Cable Glands UK for technical advice or project pricing.