Terminal Blocks - Accessories

Image Part Number Description / PDF Quantity Rfq
ATB6SP

ATB6SP

Socapex (Amphenol Pcd)

CONN TERM BLK SEPARATOR

0

ATBB4SL53

ATBB4SL53

Socapex (Amphenol Pcd)

CONN TERM BLK SHORTING 3POS

0

ATSC4EP

ATSC4EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ASMA41EP

ASMA41EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

300800000 (ELFKEY200)

300800000 (ELFKEY200)

Socapex (Amphenol Pcd)

CONN TERM BLK KEYING PLUG

0

300800800

300800800

Socapex (Amphenol Pcd)

CONN TERM BLK KEYING PLUG YLW 6P

0

ASMA21EP

ASMA21EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ATB2EC1

ATB2EC1

Socapex (Amphenol Pcd)

CONN TERM BLK END STOP

0

ATB2PP

ATB2PP

Socapex (Amphenol Pcd)

CONN TERM BLK PARTITION RAIL

0

ASBM41EP

ASBM41EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ATBB35PC

ATBB35PC

Socapex (Amphenol Pcd)

CONN TERM BLK COVER TRANSPARENT

0

ATBDRMB4

ATBDRMB4

Socapex (Amphenol Pcd)

CONN TERM BLK MNT RAIL SUP

0

ATBB35EP1

ATBB35EP1

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ATB6EP

ATB6EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ATBDRMB1

ATBDRMB1

Socapex (Amphenol Pcd)

CONN TERM BLK MNT RAIL SUP

0

ASMA42EP

ASMA42EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ATM41EP

ATM41EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

0

ATBB4SL74

ATBB4SL74

Socapex (Amphenol Pcd)

CONN TERM BLK SHORTING 4POS

0

300800805

300800805

Socapex (Amphenol Pcd)

CONN TERM BLK KEYING PLUG WHT 6P

0

ATF4EP

ATF4EP

Socapex (Amphenol Pcd)

CONN TERM BLK END PLATE

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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