Control Cables
NH-KVV Fire-Resistant Control Cable
450/750V · 2×0.75 — 37×2.5 mm²
NH-KVV control cable maintains circuit integrity during fire conditions thanks to a mica-glass tape barrier over every conductor. It is specified for fire alarms, emergency shutdown loops, smoke dampers and other life-safety control circuits.
One-line definition
Shenzhen-based industrial cable manufacturer since 1983. Power, control, data and special cables engineered for EPC projects and infrastructure across Southeast Asia and 40+ export markets.
CTT Cable is a manufacturer of power, control, data and special cables, headquartered in Shenzhen, China, with in-house extrusion, armouring and testing lines.
Specifications
Engineering data sheet
| Standard | GB/T 19666, IEC 60331 |
| Rated Voltage | 450/750 V |
| Conductor | Class 1/2 copper |
| Fire Barrier | Mica-glass tape |
| Insulation | PVC or XLPE |
| Sheath | PVC or LSZH |
| Fire Rating | 750 °C / 90 min (IEC 60331-21) |
Applications
Where it's used
- Fire alarm loops
- Emergency shutdown
- Smoke control
- Life-safety systems
Need a custom build?
Cross-sections, colours, certifications and packing can all be tailored to your project.
Talk to engineering →Key facts
Why CTT Cable
2,500+ product specifications · quotations and delivery schedules confirmed per order
How to order
How to get a quote
- 01
Share requirement
Send cable type, voltage, size, quantity and project location.
- 02
Engineering review
Our engineers confirm the correct model, standards and custom options.
- 03
Quote & lead time
Receive a project-specific quotation and confirmed delivery schedule after review.
- 04
Sample & approval
Order samples or approve drawings before mass production.
- 05
Production & delivery
Track your order from factory testing to shipment.
FAQ
Frequently asked questions
Manufacturer vs trader
Buying from a manufacturer vs a trader
| Aspect | CTT Cable (manufacturer) | Trading company |
|---|---|---|
| Who you buy from | Original manufacturer (founded 1983) | Middleman / trading company |
| Quality control | In-house extrusion, armouring & CNAS testing lab | Outsourced to third parties |
| Product capability | 2,500+ SKUs + custom engineering | Fixed catalogue only |
| Certification | Management-system and model-specific product documents | Resells other brands' certificates |
| Delivery | Project-specific logistics schedule | Longer, indirect lead times |
| Engineering support | Specification review with the engineering team | No engineering team |
