Terminal Blocks - Accessories

Image Part Number Description / PDF Quantity Rfq
1698200000

1698200000

Weidmuller

CONN TERM BLK PLUG HSG GRN 4POS

0

1252550000

1252550000

Weidmuller

KLBUE 10-20 CPF16

0

0244600000

0244600000

Weidmuller

CONN TERM BLK TEST SOCKET

0

0200100000

0200100000

Weidmuller

CONN TERM BLK RIVET

0

1853970000

1853970000

Weidmuller

CONN TERM BLK END PLATE GRAY

0

0388500000

0388500000

Weidmuller

CONN TERM BLK TEST SOCKET BLACK

0

1747540000

1747540000

Weidmuller

CONN TERM BLK MNT BLOCK ORANGE

0

1606450000

1606450000

Weidmuller

CONN TERM BLK LOCKS PC MT ORANGE

0

0503500000

0503500000

Weidmuller

CONN TERM BLK MNT BASE RAIL CRM

0

1781570000

1781570000

Weidmuller

CONN TERM BLK COVER BLACK 8POS

10

1167440000

1167440000

Weidmuller

CONN TERM BLK LOCK CLIP ORANGE

1150

1496160000

1496160000

Weidmuller

CONN TERM BLK LED HLDR ORAN 2POS

0

1755081001

1755081001

Weidmuller

CONN TERM BLK CLAMP YOKE

0

1610740000

1610740000

Weidmuller

CONN TERM BLK SCREW 100/PK

0

0279570000

0279570000

Weidmuller

CONN TERM BLK END PLATE RAIL BLU

0

C9031156

C9031156

Weidmuller

TERMINAL AP CON 6N PA

0

0191880000

0191880000

Weidmuller

CONN TERM BLK PARTITION RAIL BLU

0

1723480000

1723480000

Weidmuller

CONN TERM BLK LOCK PC MT BLACK

0

3877960000

3877960000

Weidmuller

PARTITION

0

0199360000

0199360000

Weidmuller

CONN TERM BLK END BRACKET RAIL

200

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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