Connection Systems for Control Cabinets and Panels
DIN-Rail Terminal Blocks for Industrial Control Cabinets
UL-certified DIN-rail terminal blocks for safe, reliable and efficient wiring within electrical control panels and switchboards
Designed in accordance with IEC 60947-7 standards, modular terminal blocks help simplify installation, improve safety and support long-term operational reliability.
DIN-rail terminal blocks are modular connection devices used to organise and terminate conductors within electrical panels and automation systems. Mounted on a standard 35 mm DIN rail, they provide a structured and accessible method of managing electrical wiring.
Key functions include:
- Organising wiring layouts and simplifying future modifications or expansions.
- Distributing power, signals and protective earth connections.
- Meeting IEC 60947-7 requirements and UL certification standards.
Cembre offers a complete portfolio of terminal blocks and power distribution solutions to suit a wide variety of industrial applications.
TERMINAL BLOCKS
TBS Modular Terminal Blocks
Screw Clamp Technology
TBS terminal blocks utilise traditional screw-clamp technology to deliver secure and dependable conductor termination for electrical switchboards and industrial automation systems.
Key Features
- Screw-clamp connection technology
- Conductor sizes from 0.5 to 95 mm² (20-4/0 AWG)
- PA6.6 polyamide insulating body
- CRCA stainless-steel conductor body
- Standard, multi-level, isolator, fuse-holder, earth and test terminal variants
- TBB bolt-clamp versions available for conductors up to 300 mm²
- Suitable for 35 mm DIN rail mounting
TBP Modular Terminal Blocks
Push-In Technology
TBP terminal blocks feature push-in connection technology, enabling faster installation and simplified conductor insertion for both rigid and flexible conductors.
Key Features
- Push-in connection system
- Fast and tool-efficient wiring
- PA6.6 polyamide insulating body
- Stainless-steel conductor body
- Standard, multi-level, isolator, fuse-holder, earth and test variants
- Designed for mounting on standard 35 mm DIN rail
DBLOCKS
POWER DISTRIBUTION AND SPLITTING SOLUTIONS
POWER DISTRIBUTION AND SPLITTING SOLUTIONS
DBlock distribution blocks are designed to safely distribute and split electrical power within control cabinets, switchboards and industrial automation systems.
Key Features
- Available in single-pole, double-pole and multi-pole configurations
- Up to 15 outputs depending on model
- Rated voltages up to 1000 V (IEC) and 600 V (UL)
- IP20 protection rating
- Polyamide PA6.6 insulating body
- Electro-tinned brass conductor
- Standard 35 mm DIN rail mounting
ZETA TERMINAL BLOCKS
CONNECTION DEVICES WITH INDIRECT CLAMPING TECHNOLOGY
TERMINAL BLOCKS AND SPLITTERS WITH INDIRECT CLAMPING
The Zeta range combines indirect screw-clamp technology with compact, versatile designs for power distribution and conductor management.
- Zeta Più
- Zeta Block
- Zeta Mini
Key Features
- Indirect screw-clamp connection
- Conductor sizes from 1 to 50 mm²
- IP20 protection rating
- Transparent polycarbonate insulating body
- Tinned copper conductor body
- Standard 35 mm DIN rail mounting
How to Select the Right Terminal Block
Choosing the correct terminal block requires consideration of electrical performance, connection technology, certification requirements and available panel space.
When selecting a terminal block:
- Match the terminal size to the required current rating.
- Ensure the rated voltage exceeds system voltage.
- Verify conductor and ferrule compatibility within the specified AWG range.
Different applications may require different connection methods:
Screw Clamp: A proven and reliable solution that is easy to inspect and maintain.
Push-In: Ideal for high-volume production environments where installation speed is critical.
Indirect Clamp: Provides excellent protection for flexible conductors, distributes pressure evenly and offers superior vibration resistance.
For international panel construction, verify compliance with:
- UL Listed / cULus standards
- IEC 60947-7-1 requirements
These certifications validate dielectric strength, flammability performance and rated current capacity.
Consider:
- Operating temperature range
- Humidity levels
- Dust exposure
- Required IP protection rating
The width of each terminal block determines the number of components that can be installed on a DIN rail. Allow space for:
- End stops
- Separator plates
- Marking systems
- Future expansion capacity
Each type of terminal block is designed for different application requirements:
- Through-type terminals for connecting conductors.
- Multi-level terminals to optimise space within the switchboard.
- Disconnect terminals for control and maintenance circuits.
- Fuse-holder terminals for circuit protection.
- Earth terminals for PE connection.
- Test and measurement terminals for testing and diagnostics.
Terminal blocks create a clear interface between PLC systems, I/O modules and field wiring, making commissioning, troubleshooting and maintenance faster and safer.
Used in industrial facilities, substations and motor control centres, terminal blocks and distribution blocks provide secure power routing while maintaining reliable contact pressure under high current loads.
Ideal for battery energy storage systems (BESS), solar inverter panels and renewable energy installations where reliable DC and AC distribution is essential.
Designed to withstand vibration and thermal cycling, suitable for railway applications and installations requiring compliance with EN 50155 requirements.
Why Choose Cembre Terminal Blocks?
- UL Listed / cULus certified
- Compliant with IEC 60947-7-1
- RoHS-compliant materials
- Wide operating temperature range
- Compatible with standard 35 mm DIN rail systems
- Comprehensive range of accessories and tooling
- High-quality materials for long-term reliability
Complete Your Panel Wiring Solution
Enhance your installation with Cembre's range of complementary wiring accessories and tools.
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