Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
3101016

3101016

Phoenix Contact

CONN TERM BLK DISCONN 12-28AWG

25800

1SNK705073R0000

1SNK705073R0000

TE Connectivity's Sigma Inductors

AUT SNK PI-SPRING

96

304135

304135

American Electrical, Inc.

AVK 4 FT TERMINAL BLOCK BLACK 60

100

2000-1401

2000-1401

WAGO

4-CONDUCTOR THROUGH TERMINAL BLO

161

3248130

3248130

Phoenix Contact

CONN TERM BLK GROUND 12-26AWG

13

0380480000

0380480000

Weidmuller

CONN TERM BLK FEED THRU 12-22AWG

280400

1SNK705213R0000

1SNK705213R0000

TE Connectivity's Sigma Inductors

AUT SNK PI-SPRING

132

1017000000

1017000000

Weidmuller

CONN TERM BLK DISCONNECT 8-20AWG

50

1521680000

1521680000

Weidmuller

PE TERMINAL, PUSH IN, 2.5 MM, G

741150

CY10

CY10

Altech Corporation

DIN TERM BLK SCREW FEED-THRU

3783950

1020500000

1020500000

Weidmuller

CONN TERM BLK FEED THRU 2-12 AWG

268

3211802

3211802

Phoenix Contact

CONN TERM BLK FEED THRU 10-24AWG

376550

3034060

3034060

Phoenix Contact

CONN TERM BLK FEED THRU 12-24AWG

0

3038121

3038121

Phoenix Contact

CONN TERM BLK FEED THRU 8-24 AWG

0

3046281

3046281

Phoenix Contact

CONN TERM BLK FEED THRU 6-20 AWG

140

3210406

3210406

Phoenix Contact

CONN TERM BLK DISCONN 12-26AWG

0

BNH10W

BNH10W

IDEC

BN SERIES TERMINAL BLOCK

1279

3004090

3004090

Phoenix Contact

CONN TERM BLK FEED THRU 10-30AWG

0

3044733

3044733

Phoenix Contact

CONN TERM BLK FEED THRU 10-26AWG

4261900

3211799

3211799

Phoenix Contact

CONN TERM BLK FEED THRU 12-26AWG

191750

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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