Terminal Blocks - Din Rail, Channel

Part Number	Description / PDF	Quantity
CDL4UN(I.S)/DB Altech Corporation	FEED-THRUDBL LVL INTER-SHORT 35A	200
CAFL4U(L)/48 Altech Corporation	FUSE TERM 14X1 14X1 14" WITH LED	0
ATLG2.5 Altech Corporation	TRIPLE LVL + GRND SPRING CLAMP T	150
CDL4UN/DB Altech Corporation	FEED-THROUGH TERM DBL LEVEL 35A3	0
CY4/4 Altech Corporation	DIN TERM BLK SCREW 4 CONN	360100
CS087A-L Altech Corporation	TOUCH SS NO CYL 35SR3 IP65CABLE	0
CF4U/BU Altech Corporation	FUSE TERM FOR 5X20 5X25 FUSE 10A	1100
CDL4UN(I.S)/BU Altech Corporation	FEED-THRUDBL LVL INTER-SHORT 35A	2200
CSC16T Altech Corporation	FEED THROUGH SPRING CLAMP 85A 60	300
CDL4UN(I.S)/BG Altech Corporation	FEED-THRUDBL LVL INTER-SHORT 35A	0
CS067A-L Altech Corporation	TOUCH SS NO CYL 2R15 IP65CABLE S	0
ATL2.5H Altech Corporation	DIN TERM SPRING SENSOR 3 WIRE 20	200
CY2.5/W Altech Corporation	DIN TERM BLK SCREW FEED-THRU	250800
ODL4U/R Altech Corporation	DIN TERM SCREW 2 LEVEL OFFSET 35	100
CF4U(L)/110-240V Altech Corporation	FUSE TERM W110-240V LED 10A 600V	1600
DDFL4ULR Altech Corporation	FUSETERMDBL LVLBRIDGED 63A600V22	150
CDL4UN/Y Altech Corporation	FEED-THROUGH TERM DBL LEVEL 35A3	500
CDL4UN(I.S)/Y Altech Corporation	FEED-THRUDBL LVL INTER-SHORT 35A	200
CDL4UN/R Altech Corporation	FEED-THROUGH TERM DBL LEVEL 35A3	300
AGT2.5/3 Altech Corporation	ANGULAR SPRING CLAMP GROUND BLOC	200

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

Type	Functional Features	Application Examples
Screw-Type DIN Rail Terminal Blocks	Uses screw clamping for secure wire connections; supports high current ratings	Industrial control panels, HVAC systems
Spring-Clamp Terminal Blocks	Tool-free push-in wiring for fast installation; vibration-resistant	Automation systems, railway signaling
PCB Mount Terminal Blocks	Direct printed circuit board integration; compact design	Telecom equipment, medical devices
Channel Rail Terminal Blocks	Designed for C-shaped channel rails; modular expandability	Power 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

Parameter	Typical Range	Importance
Rated Current	10A - 100A	Determines power transmission capacity
Rated Voltage	250V - 1000V	Defines electrical insulation requirements
Wire Size Compatibility	0.14mm - 300mm	Matches with conductor dimensions
Insulation Resistance	>1000M	Ensures safety and signal integrity
Operating Temperature	-20 C to +70 C	Material 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

Manufacturer	Representative Product	Key Features
Phoenix Contact	PT 10-1.5/HC Series	Modular design with cross-connection capability
Weidm ller	OMNIMATE PCB Terminal Blocks	High-density PCB connectivity
Schneider Electric	Easy Connect DIN Rail Blocks	IP20 protection rating, color-coded wiring
TE Connectivity	DIN-A-MITE Series	Compact 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