Building Automation Cables

EIB Bus Cables | EIB-H(St)H and EIB-Y(St)Y for KNX Building Automation

If you’re working on smart building projects, Camcom’s EIB bus cables are designed to make life easier. They carry low-voltage control signals for KNX (Konnex) and EIB (European Installation Bus) systems, helping everything—from lighting and HVAC to security and shading—work together seamlessly.

Our EIB-H(St)H and EIB-Y(St)Y cables are fully KNX-certified and meet European and international standards for fire safety, EMI protection, and stable data transmission.

How These Cables Work in KNX Systems
In a KNX network, all devices—sensors, actuators, and controllers—connect via a 24V DC twisted-pair bus. Camcom’s EIB cables are designed to keep the signal clean and reliable, with low capacitance and controlled impedance, so your system runs smoothly without data loss. They’re great for anything from a small office setup to large-scale infrastructure projects.

Construction & Materials
• Configuration: 2x2x0.8 mm² twisted pairs
• Conductors: Solid bare copper for stable, low-resistance signals
• Pair twisting: Controlled to reduce crosstalk and preserve signal quality

Insulation
• EIB-H(St)H: Halogen-free and flame-retardant
• EIB-Y(St)Y: Standard PVC for less strict environments
• Shielding: Aluminum/polyester foil with tinned copper drain
• Sheath: LSZH (EIB-H(St)H) or flame-retardant PVC (EIB-Y(St)Y)
• Colors: Green for halogen-free, Grey for PVC

Electrical Specs & Performance
• Nominal voltage: 300V
• Test voltage: 2000V
• Characteristic impedance: 100–120 Ω for KNX data at 9600 baud
• Capacitance: <100 nF/km
• Loop resistance: ≤73.2 Ω/km
• Temperature range: -5°C to +70°C (fixed installation)
• Minimum bending radius: 10× outer diameter
These specs ensure reliable communication, minimal signal delay, and long-term performance in offices, hospitals, schools, and industrial environments.

Shielding & EMI Protection
Both EIB-H(St)H and EIB-Y(St)Y cables feature foil plus drain shielding, keeping them safe from interference caused by nearby power lines or electronic equipment. This makes them ideal for control rooms, industrial plants, hospitals, and transportation hubs.

Fire Safety & Environmental Performance
• EIB-H(St)H: Halogen-free, low smoke, flame-retardant; meets IEC 60332-1-2, IEC 60754-1/2, IEC 61034
• EIB-Y(St)Y: Flame-retardant PVC suitable for standard indoor use
• So basically, these cables keep your KNX system safe even in public buildings, tunnels, or high-rise structures.

Applications & Use Cases
• Camcom EIB bus cables are used in:
• Commercial offices: Lighting scenes, occupancy control, centralized HVAC
• Healthcare: Patient monitoring, access control, temperature management
• Education: Scheduled lighting and ventilation
• Transportation hubs: Energy efficiency, emergency systems, integrated signage
• Residential & hospitality: User-controlled lighting, climate, and shading
• Other sectors: Shopping centers, warehouses, and data centers with KNX systems

Standards & Compliance
• Core standards: EN 50090-2-2 (KNX), IEC 60332-1-2 (flame resistance), IEC 60754-1/2 (halogen-free), IEC 61034 (smoke density)
• Fire classes (CPR): Dca s2 d2 a1; optional Cca s1b d1 a1
• Documentation: CE marking and Declaration of Performance (DoP) included

Product Range & Compatibility
• Layout: 2x2x0.8 mm²
• Colors: Green (EIB-H(St)H, halogen-free), Grey (EIB-Y(St)Y)
• Compatibility: KNX-certified devices and systems

Quality & Testing
• ISO 9001 certified manufacturing
• Tested for insulation, capacitance, continuity, shielding, flame behavior, and dimensions
• CPR-rated cables undergo additional smoke and acidity tests
• Full traceability and documentation for tenders, large projects, and exports

Global Reach & Project Support
Camcom EIB bus cables are used in over 120 countries, supporting KNX system integrators, electrical wholesalers, and MEP contractors. You’ll find them in:
• Smart hospitals and airports
• Public institutions and high-rise buildings
• LEED-certified commercial complexes
• High-performance residential developments
• Bottom line: Camcom EIB-H(St)H and EIB-Y(St)Y cables provide high-performance, low-capacitance, EMI-protected signal transmission for KNX systems, with fire safety, global compliance, and long-term reliability built in.

FAQs:

What is a CAN bus cable?
It’s a twisted-pair communication cable used in Controller Area Network (CAN) systems for reliable automation, automotive, or industrial communication. Shielding ensures noise immunity with 120 Ω impedance.

What is a KNX cable?
A KNX cable is a specialized bus cable for building automation, controlling lighting, HVAC, blinds, and security. EIB-H(St)H is halogen-free and flame-retardant, making it safe for in-building installation.

What is the cost of KNX cable?
Prices vary depending on construction, CPR fire class, and shielding type. Standard 2×2×0.8 mm halogen-free EIB-H(St)H usually ranges between €0.60 – €1.20 per meter. For bulk or project-specific quotes, contact Camcom.

What is the difference between EIB and KNX?
EIB (European Installation Bus) was the original protocol from the 1990s. KNX is its modern, global successor, fully backward compatible and standardized under EN 50090 / ISO/IEC 14543. The terms are often used interchangeably.