Terminal Blocks - Accessories

Image Part Number Description / PDF Quantity Rfq
1317660000

1317660000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

0

1313260000

1313260000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

0

0158560000

0158560000

Weidmuller

EG 3 MOUNTING FOOT

0

911702

911702

Weidmuller

RD-15ASJS BLA/SLA

0

1683720000

1683720000

Weidmuller

CONN TERM BLK END PLATE RAIL WHT

0

912096

912096

Weidmuller

RDIN-C-64F;64 PIN DIN FEM RS

0

0209100000

0209100000

Weidmuller

CONN TERM BLK GAUGE RING BLUE

0

0163860000

0163860000

Weidmuller

EG 3 COMBIFOOT

0

1633330000

1633330000

Weidmuller

CONN TERM BLK END PLATE RAIL

0

1381860000

1381860000

Weidmuller

CONN TERM BLK PARTITION RAIL

0

0347960000

0347960000

Weidmuller

CONN TERM BLK COVER CLEAR

0

1771860000

1771860000

Weidmuller

CONN TERM BLK LOCKOUT

0

1595960000

1595960000

Weidmuller

CONN TERM BLK END PLATE RAIL

0

0380350000

0380350000

Weidmuller

CONN TERM BLK END PLATE RAIL RED

0

0635060000

0635060000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

0

1749590000

1749590000

Weidmuller

CONN TERM BLK END PLATE RAIL ORG

0

1792460000

1792460000

Weidmuller

CONN TERM BLK END PLATE RAIL BLU

0

1720900000

1720900000

Weidmuller

CONN TERM BLK END PLATE RAIL BG

420

1595850000

1595850000

Weidmuller

CONN TERM BLK LGT PIPE CLR 24POS

0

1720890000

1720890000

Weidmuller

CONN TERM BLK END PLATE RAIL BLU

0

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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