Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
1SNK508412R0000

1SNK508412R0000

TE Connectivity's Sigma Inductors

AUT SNK SCREW

73

1SNK708021R0000

1SNK708021R0000

TE Connectivity's Sigma Inductors

AUT SNK PI-SPRING

48

2775317

2775317

Phoenix Contact

CONN TERM BLK FEED THROUGH

23

1706050000

1706050000

Weidmuller

CONN TERM BLK FEED THRU 12-26AWG

0

1SNK516063R0000

1SNK516063R0000

TE Connectivity's Sigma Inductors

POW SNK SCREW

20

3046155

3046155

Phoenix Contact

CONN TERM BLK DISCONNECT 8-24AWG

1800

3031542

3031542

Phoenix Contact

CONN TERM BLK FEED THRU 10-28AWG

9

1775560000

1775560000

Weidmuller

CONN TERM BLK GROUND 16-28AWG

91

3211855

3211855

Phoenix Contact

CONN TERM BLK FEED THRU 10-24AWG

0

CX4

CX4

Altech Corporation

CONN TERM BLK FEED THRU 10-24AWG

5845700

3006014

3006014

Phoenix Contact

CONN TERM BLK FEED THRU 6-24 AWG

0

3044571

3044571

Phoenix Contact

CONN TERM BLK FEED THRU 10-26AWG

3758

3000716

3000716

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

1077

3209530

3209530

Phoenix Contact

TEST DISCONNECT TERMINAL BLOCK C

0

3212002

3212002

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

689

3216066

3216066

Phoenix Contact

CONN TERM BLK FEED THRU 10-30AWG

168200

1933750000

1933750000

Weidmuller

CONN TERM BLK FEED THRU 12-30AWG

246

3213144

3213144

Phoenix Contact

CONN TERM BLK GROUND 3/0-4AWG

0

8731730000

8731730000

Weidmuller

CONN TERM BLK DISCONN 12-30AWG

100

1961750000

1961750000

Weidmuller

CONN TERM BLK DISCONN 12-30AWG

14

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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