Protolin is a polyurethane-based two-component electrical insulation resin used for cable joint filling and junction box insulation. Manufactured in Turkey by KETENCİ San. Tic. Ltd. Şti., Protolin systems provide reliable long-term protection against moisture, water, vibration, and mechanical stress.
What Does Protolin Do?
Electrical cable joints and junction boxes are exposed to moisture, water ingress, dust, and mechanical stress. When Protolin resin is applied to these points, it:
- Provides complete insulation against moisture and water
- Eliminates the risk of corrosion at conductor surfaces
- Protects against mechanical impact and vibration
- Supports long-term electrical safety
Protolin Resin Systems
Protolin is not a single product — it is a family of systems developed for different application requirements:
| System | Properties | Application |
|---|---|---|
| Protolin Rigid PU | Permanent, high mechanical protection | Underground cable joints, permanent enclosures |
| NCflex PBD W-25 | Elastic, hand-removable | Serviceable joints, vibrating environments |
| NCgel Silicone Gel | Transparent, re-enterable | Junction boxes, probe-accessible connections |
| NCpack Pouch Format | Equipment-free field application | Field technicians, service kits |
How to Use Protolin
- Prepare the surface: Clean the cable surface and enclosure interior. Remove moisture, grease, and dust.
- Measure the components: Measure Components A and B in the ratio specified by the manufacturer.
- Mix thoroughly: Mix until fully homogeneous.
- Pour slowly: Pour the mixture slowly into the junction box or joint enclosure. Avoid trapping air bubbles.
- Allow to cure: Initial set occurs within 30–90 minutes. Full properties are reached after 24 hours.
Easy Field Application with NCpack
With the NCpack dual-component pouch format, Protolin resin can be applied in the field without any equipment. No scales, containers, or mixing tools needed — press the barrier, mix inside the pouch, apply directly.
Where Is Protolin Used?
- Underground electrical cable joints
- Junction box and connection enclosure insulation
- Outdoor lighting connections
- Industrial PCB and sensor potting
- EV charging cable joints
- Solar system junction box filling
Frequently Asked Questions
How long does Protolin take to cure?
Initial set occurs within 30–90 minutes depending on ambient temperature. Full mechanical and insulation properties are reached after 24 hours.
Is Protolin removable?
Rigid Protolin systems are permanent — removal is difficult. If service access is required, NCflex elastic system or NCgel silicone gel should be selected.
Is Protolin waterproof?
When correctly applied, IP67 and IP68 protection targets can be achieved.
Where can I buy Protolin?
Protolin products are available directly from the manufacturer.