Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
CTS4U-N/G

CTS4U-N/G

Altech Corporation

CONN TERM BLK FEED THRU 10-22AWG

414400

1SNK708062R0000

1SNK708062R0000

TE Connectivity's Sigma Inductors

AUT SNK PI-SPRING

99

3208128

3208128

Phoenix Contact

CONN TERM BLK FEED THRU 14-26AWG

586

3045208

3045208

Phoenix Contact

CONN TERM BLK FEED THRU 8-24 AWG

2458200

3004362

3004362

Phoenix Contact

CONN TERM BLK FEED THRU 10-30AWG

106895600

3036043

3036043

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

0

43517.2

43517.2

On-Shore Technology, Inc.

CONN TERM BLK FEED THRU 10-20AWG

0

2561970000

2561970000

Weidmuller

W-SERIES, FUSE TERMINAL, RATED C

50550

0538860000

0538860000

Weidmuller

CONN TERM BLK FEED THRU 12-22AWG

70

1791110000

1791110000

Weidmuller

CONN TERM BLK FEED THRU 16-28AWG

200

3024478

3024478

Phoenix Contact

CONN TERM BLK DISCONN 12-24AWG

0

3036068

3036068

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

672000

1616410000

1616410000

Weidmuller

CONN TERM BLK DISCONN 12-26AWG

50

3210307

3210307

Phoenix Contact

CONN TERM BLK DISCONN 16-26AWG

0

2017224

2017224

Phoenix Contact

CONN TERM BLK FEED THROUGH GRAY

50

CDLG2.5

CDLG2.5

Altech Corporation

DOUBLE LEVEL DIN RAIL TERM BLOCK

63550

3046252

3046252

Phoenix Contact

CONN TERM BLK DISCONN 10-26AWG

27

304251

304251

American Electrical, Inc.

AVK 35 TERMINAL BLOCK BLUE 600V

100

3045059

3045059

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

8172350

1033300000

1033300000

Weidmuller

CONN TERM BLK FEED THRU 12-26AWG

22

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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