Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
1SNK508151R0000

1SNK508151R0000

TE Connectivity's Sigma Inductors

TEST AND MEASUREMENT TB

22

3004155

3004155

Phoenix Contact

CONN TERM BLK DISCONN 10-26AWG

1

3046142

3046142

Phoenix Contact

CONN TERM BLK DISCONN 10-26AWG

20319550

1078963

1078963

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

19

0340460000

0340460000

Weidmuller

CONN TERM BLK FEED THRU 14-24AWG

6300

3044665

3044665

Phoenix Contact

CONN TERM BLK GROUND 12-26AWG

715350

3270197

3270197

Phoenix Contact

FUSE MODULAR TERMINAL BLOCK CONN

1750

3005196

3005196

Phoenix Contact

CONN TERM BLK FEED THRU 6-24 AWG

2377000

3037449

3037449

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

351000

3046715

3046715

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

52

1616440000

1616440000

Weidmuller

CONN TERM BLK DISCONN 12-26AWG

365

1547610000

1547610000

Weidmuller

FEED-THROUGH TERMINAL, PUSH IN,

189

0719168

0719168

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

128

1636820000

1636820000

Weidmuller

CONN TERM BLK FEED THRU 8-22 AWG

19250

0444048

0444048

Phoenix Contact

CONN TERM BLK GROUND 8-26 AWG

0

1779010000

1779010000

Weidmuller

CONN TERM BLK DISCONN 12-26AWG

114700

3213950

3213950

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

154

1717740000

1717740000

Weidmuller

CONN TERM BLK GROUND 2-12 AWG

38

3047400

3047400

Phoenix Contact

CONN TERM BLK DISCONNECT 8-24AWG

48300

CTS4U-N/BL

CTS4U-N/BL

Altech Corporation

CONN TERM BLK FEED THRU 10-22AWG

3904600

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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