Terminal Blocks - Accessories

Image Part Number Description / PDF Quantity Rfq
0495860000

0495860000

Weidmuller

EG 2 ZBE LEFT

0

1005320000

1005320000

Weidmuller

CONN TERM BLK COVER BLACK 7POS

0

0329120000

0329120000

Weidmuller

CONN TERM BLK END PLATE RAIL YLW

500

1933800000

1933800000

Weidmuller

CONN TERM BLK END PLATE BEIGE

0

1781950000

1781950000

Weidmuller

CONN TERM BLK REDUC SLV WHT 25PC

0

C9048086

C9048086

Weidmuller

TERMINAL EG4 GRAY END PLATE

0

0632760000

0632760000

Weidmuller

HOLDER CARD EDGE FOR SKH 32-48

0

C9025736

C9025736

Weidmuller

RS 100 END PLATE RAIL GRAY

0

1692680000

1692680000

Weidmuller

CONN TERM BLK MNT BASE RAIL GRN

0

1539860000

1539860000

Weidmuller

CONN TERM BLK MNT BLOCK ORANGE

0

1856860000

1856860000

Weidmuller

CONN TERM BLK KEYING STAR BEIGE

0

1849740000

1849740000

Weidmuller

CONN TERM BLK KEYING STAR BLACK

0

1723800000

1723800000

Weidmuller

CONN TERM BLK YOKE HOLDER

0

1288600000

1288600000

Weidmuller

END AND PARTITION PLATE FOR TERM

50

0352880000

0352880000

Weidmuller

CONN TERM BLK MNT BASE RAIL BLUE

0

0140800000

0140800000

Weidmuller

CONN TERM BLK COVER BEIGE 6POS

0

0128900000

0128900000

Weidmuller

CONN TERM BLK SCREW

200

1613890000

1613890000

Weidmuller

CONN TERM BLK STRN REL BK 5POS

0

1613800000

1613800000

Weidmuller

CONN TERM BLK KEYING PLUG BLACK

0

0485560000

0485560000

Weidmuller

CONN TERM BLK RETAIN PLATE BEIGE

40

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.

RFQ BOM Call Skype Email
Top