Terminal Blocks - Din Rail, Channel

Image Part Number Description / PDF Quantity Rfq
1991810000

1991810000

Weidmuller

PE TERMINAL, PUSH IN, 6 MM, GRE

36150

0270018

0270018

Phoenix Contact

CONN TERM BLK FEED THRU 12-28AWG

0

1SNK506063R0000

1SNK506063R0000

TE Connectivity's Sigma Inductors

AUT SNK SCREW

100

8161820000

8161820000

Weidmuller

CONN TERM BLK FEED THRU 12-22AWG

3390

CY4/3

CY4/3

Altech Corporation

DIN TERM BLK SCREW 3 CONN

13701400

2010-1207

2010-1207

WAGO

2-CONDUCTOR GROUND TERMINAL BLOC

42

3212143

3212143

Phoenix Contact

CONN TERM BLK DISCONN 10-24AWG

1

2051210000

2051210000

Weidmuller

FEED-THROUGH TERMINAL, PUSH IN,

0

3031377

3031377

Phoenix Contact

CONN TERM BLK FEED THRU 10-28AWG

651850

3037180

3037180

Phoenix Contact

CONN TERM BLK FEED THRU 10-28AWG

452000

2775250

2775250

Phoenix Contact

CONN TERM BLK FEED THROUGH GRAY

66

3005798

3005798

Phoenix Contact

CONN TERM BLK DISCONN 12-26AWG

0

3048629

3048629

Phoenix Contact

CONN TERM BLK DISCONNECT 6-18AWG

50

2000-1207

2000-1207

WAGO

2-CONDUCTOR GROUND TERMINAL BLOC

200

1SNK710020R0000

1SNK710020R0000

TE Connectivity's Sigma Inductors

POW SNK PI-SPRING

300

3101126

3101126

Phoenix Contact

CONN TERM BLK DL DISCON 12-26AWG

6

2794903

2794903

Phoenix Contact

CONN TERM BLK FEED THRU 10-26AWG

0

1037700000

1037700000

Weidmuller

CONN TERM BLK FEED THRU 12-30AWG

881500

3211249

3211249

Phoenix Contact

CONN TERM BLK DISCONNECT BLACK

0

1028900000

1028900000

Weidmuller

CONN TERM BLK FEED THRU 4-18 AWG

197400

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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