Terminal Blocks - Accessories

Image Part Number Description / PDF Quantity Rfq
1957710000

1957710000

Weidmuller

WAP WTL6/1L

203180

1050060000

1050060000

Weidmuller

CONN TERM BLK END PLATE RAIL ORG

454200

1142980000

1142980000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

58360

1782340000

1782340000

Weidmuller

CONN TERM BLK PARTITION RAIL BG

0

1608790000

1608790000

Weidmuller

CONN TERM BLK END PLATE RAIL ORG

349

0555660000

0555660000

Weidmuller

CONN TERM BLK END PLATE

0

1880450000

1880450000

Weidmuller

CONN TERM BLK END PLATE BLACK

494300

1883210000

1883210000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

406

0318560000

0318560000

Weidmuller

CONN TERM BLK PARTITION RAIL BG

389

1059310000

1059310000

Weidmuller

CONN TERM BLK END PLATE BLACK

305

1521530000

1521530000

Weidmuller

CONN TERM BLK END PLATE BEIGE

5311950

1651970000

1651970000

Weidmuller

CONN TERM BLK INT JUMP GN/YLW 1P

100300

0383560000

0383560000

Weidmuller

CONN TERM BLK END BRKT RAIL BG

213923500

1933810000

1933810000

Weidmuller

CONN TERM BLK END PLATE BEIGE

2

1936710000

1936710000

Weidmuller

CONN TERM BLK SPACER GRAY

500

0303620000

0303620000

Weidmuller

CONN TERM BLK END PLATE RAIL YLW

253

1060080000

1060080000

Weidmuller

CONN TERM BLK END PLATE RAIL BLU

413300

1706110000

1706110000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

27522650

0641720000

0641720000

Weidmuller

CONN TERM BLK BUSBAR SUP

24140

1050180000

1050180000

Weidmuller

CONN TERM BLK END PLATE RAIL BLU

14260

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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