Terminal Blocks - Accessories

Image Part Number Description / PDF Quantity Rfq
8000007627

8000007627

Weidmuller

BG GHDE 10P REG

2

1068300000

1068300000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

3

1780890000

1780890000

Weidmuller

CONN TERM BLK PARTITION RAIL BG

295000

0280300000

0280300000

Weidmuller

CONN TERM BLK BUSBAR

33

1937030000

1937030000

Weidmuller

CONN TERM BLK SPACER GRAY

400

1783550000

1783550000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

29540

0258260000

0258260000

Weidmuller

CONN TERM BLK RETAIN PLATE BEIGE

280

0302860000

0302860000

Weidmuller

CONN TERM BLK PARTITION RAIL

81400

1397160000

1397160000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

17820

1776090000

1776090000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

0

0502860000

0502860000

Weidmuller

CONN TERM BLK BUSBAR SUP GRN/YLW

188150

0191860000

0191860000

Weidmuller

CONN TERM BLK PARTITION RAIL

397

1692261001

1692261001

Weidmuller

CONN TERM BLK CLAMP YOKE

233

1991940000

1991940000

Weidmuller

CONN TERM BLK END PLATE BEIGE

1100

1712311001

1712311001

Weidmuller

CONN TERM BLK CLAMP YOKE 20MM

18150

0636800000

0636800000

Weidmuller

CONN TERM BLK MNT BASE RAIL

1742160

0348900000

0348900000

Weidmuller

CONN TERM BLK BUSBAR

12501

1571730000

1571730000

Weidmuller

CONN TERM BLK MNT BASE RAIL ORAN

100300

1514400000

1514400000

Weidmuller

CONN TERM BLK END PLATE BEIGE

771

0485300000

0485300000

Weidmuller

CONN TERM BLK COVER CLEAR

1115

Terminal Blocks - Accessories

1. Overview

Terminal Blocks Accessories are modular devices used to secure and manage electrical connections in various systems. They include components like terminal covers, marking strips, bridging pieces, and grounding terminals. These accessories enhance safety, improve connectivity reliability, and facilitate maintenance in electrical installations. With the rise of smart infrastructure and Industry 4.0, terminal blocks accessories have become critical in ensuring efficient power distribution and signal transmission across industries.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Terminal CoversProtect against dust, moisture, and accidental contactIndustrial control panels
Marking StripsEnable circuit identification via labelingElectrical cabinets in HVAC systems
Bridging PiecesAllow parallel connections between adjacent terminalsPower distribution blocks
Grounding TerminalsProvide safe earthing paths for equipmentMachinery grounding systems
Fuse HoldersIntegrate circuit protection with terminal blocksControl circuits in renewable energy systems

3. Structure and Components

Typical terminal blocks accessories consist of: - Insulation Housing: Made from flame-retardant thermoplastics (e.g., PA66) - Conductive Elements: Brass or phosphor bronze contacts with tin/silver plating - Clamping Mechanism: Screw-type, spring-cage, or push-in connectors - Identification Features: Laser-markable surfaces or insertable labels - Mounting Base: DIN rail compatible or panel-mount designs

4. Key Technical Specifications

ParameterTypical RangeImportance
Rated Current1-300ADetermines power handling capacity
Rated Voltage50-1000VEnsures insulation safety
Contact Resistance<10m Affects connection efficiency
Insulation Resistance>100M Prevents leakage current
Operating Temperature-40 C to +120 CEnsures reliability in harsh environments
Short-Circuit Withstand10-100kACritical for industrial safety

5. Application Fields

Major industries include:

  • Industrial Automation: PLC control cabinets, motor drives
  • Energy Systems: Solar inverters, wind turbine controllers
  • Transportation: Rail vehicle electrical systems, EV charging stations
  • Telecom Infrastructure: Base station power distribution
  • Building Automation: HVAC control systems, smart lighting

Example: In smart grid substations, grounding terminals protect SCADA systems from surges.

6. Leading Manufacturers and Products

ManufacturerKey ProductsSpecial Features
Phoenix ContactPTFIX seriesModular plug-in system
Weidm llerSAM seriesTool-free connection technology
TE ConnectivityMini Universal seriesCompact 5.0mm pitch
Wago285 seriesCAGE CLAMP spring connection
OMRONV-terminal seriesVibration-resistant screw terminals

7. Selection Guide

Key considerations:

  1. Electrical Requirements: Match current/voltage ratings with system needs
  2. Environmental Factors: Consider temperature, humidity, and vibration
  3. Installation Type: DIN rail vs. PCB mounting
  4. Certifications: UL, CE, RoHS compliance
  5. Maintenance Needs: Choose between screw-type (high reliability) or push-in (fast installation)

Case Study: For outdoor wind turbine control cabinets, specify IP67-rated terminal covers with UV-resistant materials.

8. Industry Trends

Emerging trends include:

  • Miniaturization: 2.5mm pitch terminals for compact devices
  • Smart Integration: IoT-enabled terminals with condition monitoring
  • Modular Systems: Customizable blocks with tool-less assembly
  • Material Innovation: Halogen-free flame-retardant polymers
  • Global Standardization: Unified dimensions per IEC 60947-7

Market growth driven by EV charging infrastructure and renewable energy projects, projected at 6.2% CAGR through 2030.

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