Silicone Insulating Sleeves/Overhead line cover Button Lock Type | SECLIS BLT
Applications: Protection of MV overhead conductors against flashovers due to wildlife or vegetation contact, Insulation for wires at r…
Silicone Insulating Sleeves for Railway Overhead Lines
Manufactured by Centroid Polymer Technologies in Kerala, India
Where overhead lines cross railways, roads and footbridges, or run near structures, insulating the conductor reduces flashover risk and protects people working nearby.
Centroid's silicone insulating sleeves fit catenaries, droppers and crossing spans, and the double-lock design holds firm under vibration and wind.
The sleeves install in the field on bare conductors and can be fitted as temporary or permanent protection during maintenance.
What Railways & Metro buyers need
- Secure retention under vibration and wind load
- Phase-to-ground isolation at crossings and structures
- Field installation during short possession windows
- Long-term outdoor and UV durability
- Temporary or permanent protection options
Standards commonly specified
- EN45545-2 HL3
- NFPA 130
- RDSO approvals (on request)
Compliance varies by product and compound. Ask us for the certificates and test reports for your part.
Silicone Insulation/Conductor Cover Sleeves and Overhead Line Covers for Railways & Metro
Silicone Insulation Sleeves/Overhead line cover Press Lock Type || SECLIS PLT
Applications: Overhead conductor protection against wildlife and vegetation, Safety insulation for railway, road bridge crossings, and…
Silicone Insulating Sleeves/Overhead line cover Double Lock Type || SECLIS DLT
Applications: Overhead insulation of MV/HV lines (catenaries, droppers, substation conductors), Safety protection along railway and ro…
Silicone Insulation Sleeve/Overhead line cover Self Lock Type || SECLIS SLT
Applications: Overhead MV/HV line insulation for wildlife and vegetation protection, Cable protection at road, railway, and structure …
Frequently asked questions
Are these sleeves suitable for catenary systems?
Yes. Double-lock sleeves are designed for catenaries, droppers and substation conductors.
Can they be used for temporary protection during maintenance?
Yes. The sleeves can be fitted and removed in the field as temporary insulation, or left in place permanently.
Where are they typically installed?
At rail, road and footbridge crossings, near structures, and at other points where clearance is limited.
Need a custom part for railways & metro?
Send a drawing or sample and our engineers will recommend a compound and quote.
