Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
XW5T-S35-1.1-1BL

XW5T-S35-1.1-1BL

Omron Automation & Safety Services

TB SCREW 35MM 1:1 1TIER BLUE

100

3008025

3008025

Phoenix Contact

CONN TERM BLK FEED THR 1/0-18AWG

0

3060527

3060527

Phoenix Contact

CONN TERM BLK DISCONN 10-26AWG

0

BNH30W

BNH30W

IDEC

BN SERIES TERMINAL BLOCK

2688

1814700000

1814700000

Weidmuller

CONN TERM BLK DISCONN 10-22AWG

1712975

3031500

3031500

Phoenix Contact

CONN TERM BLK GROUND 8-24 AWG

131200

1SNK508061R0000

1SNK508061R0000

TE Connectivity's Sigma Inductors

POW SNK SCREW

264

3049411

3049411

Phoenix Contact

CONN TERM BLK GROUND 14-26AWG

46

3046236

3046236

Phoenix Contact

CONN TERM BLK FEED THRU 10-26AWG

0

3046279

3046279

Phoenix Contact

CONN TERM BLK DISCONN 14-26AWG

0

1SNK705012R0000

1SNK705012R0000

TE Connectivity's Sigma Inductors

AUT SNK PI-SPRING

203

1086498

1086498

Phoenix Contact

TERM BLOCK HIGH-CURRENT

20

0719032

0719032

Phoenix Contact

CONN TERM BLK FEED THRU 14-30AWG

0

DK6N

DK6N

DINKLE Corporation USA

SCREW TERM BLK FEED THROUGH 20~8

27074

3036424

3036424

Phoenix Contact

CONN TERM BLK FEED THRU 10-28AWG

137

3002018

3002018

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

1450

1775480000

1775480000

Weidmuller

CONN TERM BLK FEED THRU 16-30AWG

1121100

3211775

3211775

Phoenix Contact

CONN TERM BLK FEED THRU 10-24AWG

561350

3038529

3038529

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

0

1SNK506414R0000

1SNK506414R0000

TE Connectivity's Sigma Inductors

AUT SNK SCREW

50

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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