Terminal Blocks - Power Distribution

Part Number	Description / PDF	Quantity
38632 Altech Corporation	DISTI. BLOCK 175A SP ALUM 1X2/0	67
CB4/3H Altech Corporation	PWR DISTRIB BLK HIGH TEMP	2503650
CB6/2H Altech Corporation	PWR DISTRIB BLK HIGH TEMP	1534400
38057 Altech Corporation	400 A 1 P SPLICER BLOCK TIN ALUM	89
38059 Altech Corporation	800A 1P SPLICR BLCK;2 INPUT TIN	79
38641 Altech Corporation	1 P ALUM.DISTI.BLOCK115A INPUT 1	0
CB6/4H Altech Corporation	PWR DISTRIB BLK HIGH TEMP	1694550
38676 Altech Corporation	1P ALUM. DISTI.BLOCK115A IN:1X82	87
CB16/3H Altech Corporation	PWR DISTRIB BLK HIGH TEMP	950
CB16/2H Altech Corporation	PWR DISTRIB BLK HIGH TEMP	2391950
CXDB35/10A Altech Corporation	CONN TERM BLK DIST 2-14AWG	1284780
CDB4/2/R Altech Corporation	DISTRIBUTION BLOCK CENTER IN 8 O	0
CDB4/5(1) Altech Corporation	DISTRIBUTION BLOCK SIDE INPUT 10	0
CDB10/4 Altech Corporation	DISTRIBUTION BLOCK CENTER IN 16	20
CMDB4/4/G Altech Corporation	DISTRIBUTION BLOCK GRN 8 OUT 35A	0
CDB25/2 Altech Corporation	DISTRIBUTION BLOCK CENTER IN 8 O	20
CMDB4/10/BU Altech Corporation	DISTRIBUTION BLOCK 6MM 20 OUT 35	0
CMDB10/3/Y Altech Corporation	DISTRIBUTION BLOCK 10MM 6 OUT 60	0
CDB6/2 Altech Corporation	DISTRIBUTION BLOCK CENTER IN 8 O	160
CMDB4/3/R Altech Corporation	DISTRIBUTION BLOCK 6MM 6 OUT 35A	0

Terminal Blocks - Power Distribution

1. Overview

Power distribution terminal blocks are modular electrical components designed to securely connect and distribute electrical currents across multiple circuits. These devices serve as critical interface points in industrial and commercial systems, enabling safe and efficient power transmission. Their importance has grown exponentially with increasing complexity in automation systems, renewable energy installations, and smart infrastructure applications.

2. Major Types & Functional Classification

Type	Functional Features	Application Example
Feed-Through Terminal Blocks	Single-level connection with high current capacity	Industrial control panel power bus
Ground Terminal Blocks	Protective earth connection with thermal dissipation	Machinery safety grounding
Distribution Blocks	Multi-branch power splitting with common busbar	PLC power supply distribution
High-Density Blocks	Miniaturized design for space-constrained applications	Solar inverter DC side connections

3. Structural Composition

Typical construction features:

Conductive elements: Copper alloys with tin/silver plating for corrosion resistance
Insulation housing: High-temperature resistant thermoplastics (UL94 V-0 rated)
Termination methods: Screw (torque 0.5-6.0Nm), spring-clamp, or PCB solder
Busbar systems: Solid or segmented designs with vibration-resistant locking

4. Key Technical Parameters

Parameter	Typical Range	Significance
Rated Current	10-300A	Determines power handling capacity
Rated Voltage	230-1000V AC/DC	Safety insulation requirements
Wire Size Range	0.2-95mm	Application flexibility
Operating Temp	-40 C to +120 C	Environmental reliability
Cross-Section	5.2-10.2mm	Panel space optimization

5. Application Fields

Primary industries include:

Industrial automation (CNC machines, robotics)
Renewable energy systems (solar inverters, wind turbines)
Building management systems (HVAC controls)
Railway infrastructure (signaling systems)
Test & measurement equipment

6. Leading Manufacturers & Products

Manufacturer	Key Product Series	Special Features
Phoenix Contact	PT-3S, MC 1,5	Push-in connection technology
Weidm ller	SAM series	Vibration-proof clamping system
TE Connectivity	Printalloy	High-density PCB mounting
WAGO	285 Series	CAGE CLAMP termination

7. Selection Guidelines

Key consideration factors:

Current/voltage requirements with 20% safety margin
Environmental conditions (temperature, vibration)
Wire type compatibility (solid/stranded)
Mounting orientation and panel space constraints
Certification requirements (UL, CE, RoHS)
Maintenance accessibility considerations

Industry Development Trends

Current market trends indicate:

Increased adoption of modular, pluggable designs
Integration of smart monitoring capabilities (IoT-enabled terminals)
Development of eco-friendly halogen-free materials
Miniaturization while maintaining high current density
Enhanced thermal management solutions for EV charging infrastructure

Market projections show 6.2% CAGR through 2028, driven by industrial automation expansion and renewable energy growth.