Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
304257

304257

American Electrical, Inc.

AVK 35 TERMINAL BLOCK ORANGE 600

0

304133

304133

American Electrical, Inc.

AVK 4 FT TERMINAL BLOCK YELLOW 6

0

304129

304129

American Electrical, Inc.

AVK 2.5 FT TERMINAL BLOCK BEIGE

200

304210

304210

American Electrical, Inc.

AVK 4RD TERMINAL BLOCK GREY 600V

100

304121

304121

American Electrical, Inc.

AVK 2.5 FT TERMINAL BLOCK BLUE 6

196

305130

305130

American Electrical, Inc.

CONN TERM BLK FEED THRU 10-26AWG

215

351720

351720

American Electrical, Inc.

CONN TERM BLK DISCONNECT 8-22AWG

16

304215

304215

American Electrical, Inc.

AVK 4RD TERMINAL BLOCK BLACK 600

100

TCB-J

TCB-J

American Electrical, Inc.

CONN TERM BLK 12 AWG

71

304208

304208

American Electrical, Inc.

AVK 2.5 RD TERMINAL BLOCK BROWN

0

304125

304125

American Electrical, Inc.

AVK 2.5 FT TERMINAL BLOCK BLACK

190

304206

304206

American Electrical, Inc.

AVK 2.5 RD TERMINAL BLOCK WHITE

0

304250

304250

American Electrical, Inc.

AVK 35 TERMINAL BLOCK GREY 600V

100

304130

304130

American Electrical, Inc.

AVK 4 FT TERMINAL BLOCK GREY 600

85

304124

304124

American Electrical, Inc.

AVK 2.5 FT TERMINAL BLOCK RED 60

200

334120

334120

American Electrical, Inc.

AVK 2.5/4T GND TERMINAL BLK 600V

97

304128

304128

American Electrical, Inc.

AVK 2.5 FT TERMINAL BLOCK BROWN

0

304120

304120

American Electrical, Inc.

AVK 2.5 FT TERMINAL BLOCK GREY 6

210

304256

304256

American Electrical, Inc.

AVK 35 TERMINAL BLOCK WHITE 600V

0

304218

304218

American Electrical, Inc.

AVK 4RD TERMINAL BLOCK BROWN 600

0

Terminal Blocks - Din Rail, Channel

1. Overview

DIN Rail and Channel Terminal Blocks are modular electrical connectors used to secure and transmit electrical signals or power between wires and devices. Designed to mount on standardized DIN rails (EN 50022) or channel rails, these components enable efficient wiring organization in industrial and commercial systems. Their importance lies in simplifying complex electrical installations, enhancing maintainability, and ensuring reliable connectivity in critical infrastructure.

2. Major Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Screw-Type DIN Rail Terminal BlocksUses screw clamping for secure wire connections; supports high current ratingsIndustrial control panels, HVAC systems
Spring-Clamp Terminal BlocksTool-free push-in wiring for fast installation; vibration-resistantAutomation systems, railway signaling
PCB Mount Terminal BlocksDirect printed circuit board integration; compact designTelecom equipment, medical devices
Channel Rail Terminal BlocksDesigned for C-shaped channel rails; modular expandabilityPower distribution cabinets, renewable energy systems

3. Structure and Components

Typical construction includes:

  • Conductive Elements: Copper alloy or brass contacts with tin/silver plating for corrosion resistance
  • Insulation Housing: Flame-retardant thermoplastic (UL 94 V-0 rated)
  • Mounting Mechanism: Snap-in clips for DIN rail (35mm standard) or channel rail compatibility
  • Wire Connection System: Screw terminals (M3-M4), spring clamps, or cage clamps

4. Key Technical Parameters

ParameterTypical RangeImportance
Rated Current10A - 100ADetermines power transmission capacity
Rated Voltage250V - 1000VDefines electrical insulation requirements
Wire Size Compatibility0.14mm - 300mm Matches with conductor dimensions
Insulation Resistance>1000M Ensures safety and signal integrity
Operating Temperature-20 C to +70 CMaterial performance under thermal stress

5. Application Fields

  • Industrial Automation: PLC control cabinets, motor drives
  • Energy Systems: Solar inverters, wind turbine junction boxes
  • Building Infrastructure: Smart lighting control systems
  • Rail Transport: Train power distribution panels

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Phoenix ContactPT 10-1.5/HC SeriesModular design with cross-connection capability
Weidm llerOMNIMATE PCB Terminal BlocksHigh-density PCB connectivity
Schneider ElectricEasy Connect DIN Rail BlocksIP20 protection rating, color-coded wiring
TE ConnectivityDIN-A-MITE SeriesCompact size with 6kV impulse withstand

7. Selection Guidelines

Key considerations:

  • Match current/voltage ratings with system requirements
  • Choose connection type based on maintenance needs (screw for high reliability, spring for quick changes)
  • Verify wire gauge compatibility
  • Consider environmental factors (temperature, vibration, humidity)
  • Check certifications (UL, CSA, IEC 60947)

Case Study: A smart building project selected spring-clamp terminal blocks with 600V rating and IP55 housing to enable rapid maintenance while ensuring safety in electrical rooms.

8. Industry Trends

  • Miniaturization: 30% reduction in standard DIN rail block width (e.g., 6.2mm vs. 8.4mm)
  • Smart Integration: Built-in current sensors and IoT connectivity
  • Material Innovation: Halogen-free flame retardant materials
  • Standardization: Global adoption of IEC 61535 for safe low-voltage connections
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