Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
3211856

3211856

Phoenix Contact

CONN TERM BLK FEED THRU 10-24AWG

0

1SNK516064R0000

1SNK516064R0000

TE Connectivity's Sigma Inductors

POW SNK SCREW

20

0128360000

0128360000

Weidmuller

CONN TERM BLK FEED THRU 10-22AWG

1192800

3212196

3212196

Phoenix Contact

CONN TERM BLK GROUND 8-20 AWG

0

1SNK505312R0000

1SNK505312R0000

TE Connectivity's Sigma Inductors

AUT SNK SCREW

49

1SNK512060R0000

1SNK512060R0000

TE Connectivity's Sigma Inductors

POW SNK SCREW

49

3070053

3070053

Phoenix Contact

CONN TERM BLK DISCONN 10-26AWG

0

351220

351220

American Electrical, Inc.

CONN TERM BLK DISCONNECT 8-26AWG

25

1SNK712063R0000

1SNK712063R0000

TE Connectivity's Sigma Inductors

POW SNK PI-SPRING

30

1020190000

1020190000

Weidmuller

WDU 4 YELLOW/BLACK

100200

1SNK705711R0000

1SNK705711R0000

TE Connectivity's Sigma Inductors

AUT SNK PI-SPRING

37

3000563

3000563

Phoenix Contact

CONN TERM BLK DISCONN 10-20AWG

35

304258

304258

American Electrical, Inc.

AVK 35 TERMINAL BLOCK BROWN 600V

0

3044636

3044636

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

1560

1820560000

1820560000

Weidmuller

CONN TERM BLK FEED THRU 250 MCM

5

1SNK508315R0000

1SNK508315R0000

TE Connectivity's Sigma Inductors

POW SNK SCREW

199

XW5T-S4.0-KD

XW5T-S4.0-KD

Omron Automation & Safety Services

FUSETBW/FUSETERM4MM1:1 1TIER

99

2002-3207

2002-3207

WAGO

TRIPLE-DECK TERMINAL BLOCK; 6-CO

90

3006506

3006506

Phoenix Contact

CONN TERM BLK FEED THRU 14-26AWG

0

1284160000

1284160000

Weidmuller

CONN TERM BLK FEED THROUGH BEIGE

128500

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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