Terminal Blocks - Contacts

Image Part Number Description / PDF Quantity Rfq
3190632

3190632

Phoenix Contact

CONTACT SOCKET CRIMP 14-16 AWG

0

3190629

3190629

Phoenix Contact

CONTACT SOCKET CRIMP 18-20 AWG

0

3190658

3190658

Phoenix Contact

CONTACT SOCKET CRIMP TIN

0

3190593

3190593

Phoenix Contact

CONTACT PIN CRIMP

0

1013781

1013781

Phoenix Contact

CONTACT SOCKET CRIMP 20-26AWG

930

3190506

3190506

Phoenix Contact

CONTACT SOCKET CRIMP

600

1013988

1013988

Phoenix Contact

CONTACT PIN CRIMP 20-26AWG

46055000

3190438

3190438

Phoenix Contact

CONTACT SOCKET CRIMP

250

3190577

3190577

Phoenix Contact

CONTACT PIN CRIMP FOR ICC CONN

411

3190564

3190564

Phoenix Contact

CONTACT SOCKET CRIMP

838

3030048

3030048

Phoenix Contact

TERM BLOCK DIN RAIL

0

1013777

1013777

Phoenix Contact

CONTACT SOCKET CRIMP 18-22AWG

3910

3190645

3190645

Phoenix Contact

CONTACT SOCKET CRIMP TIN

0

1013425

1013425

Phoenix Contact

CONTACT SOCKET 20-26AWG CRIMP

2242500

1923717

1923717

Phoenix Contact

CONTACT SOCKET CRIMP

0

1013987

1013987

Phoenix Contact

CONTACT PIN CRIMP 18-22AWG

85005000

1013778

1013778

Phoenix Contact

CONTACT SOCKET CRIMP 20-26AWG

88705000

1879544

1879544

Phoenix Contact

CONTACT SOCKET CRIMP TIN

16000

1013780

1013780

Phoenix Contact

CONTACT SOCKET CRIMP 18-22AWG

600

1013989

1013989

Phoenix Contact

CONTACT PIN CRIMP 18-22AWG

520

Terminal Blocks - Contacts

1. Overview

Terminal Blocks - Contacts are modular devices used to securely connect two or more wires in electrical systems. They provide reliable electrical conductivity while ensuring mechanical stability and insulation. As critical components in modern electrical engineering, they enable efficient signal transmission, power distribution, and system modularity across industries ranging from industrial automation to renewable energy systems.

2. Main Types and Functional Classification

Type Functional Characteristics Application Examples
Screw Terminal Blocks Mechanical clamping via screws, Industrial control panels, HVAC systems
Spring Clamp Terminal Blocks Tool-free wire insertion with spring-loaded clamps Rapid rail vehicle wiring, laboratory equipment
PCB Terminal Blocks Direct printed circuit board mounting with insulation displacement Telecom equipment, medical devices
Barrier Terminal Strips Open-frame design with screw-based clamping High-voltage power supplies, test equipment

3. Structure and Components

Typical terminal blocks consist of: - Insulating housing (PA66/Glass fiber reinforced thermoplastic) - Conductive elements (Copper alloys/Copper-clad steel) - Locking mechanisms (Screws/Spring cages) - Wire entry systems (Axial/radial orientations) - Identification markings (Alphanumeric/Color coding) Advanced designs incorporate vibration-resistant features and multi-level connection architectures.

4. Key Technical Specifications

Parameter Importance
Rated Current (10-300A) Determines power transmission capacity
Contact Resistance ( 10m ) Impacts energy efficiency and thermal performance
Dielectric Strength (1500-6000V) Ensures electrical safety isolation
Wire Size Range (0.08-300mm ) Dictates application flexibility
Temperature Range (-60 C to +150 C) Defines operational environmental tolerance

5. Application Fields

Primary industries include: - Industrial automation (PLCs, CNC machines) - Energy systems (Solar inverters, switchgear) - Transportation (Railway signaling, EV charging stations) - Building infrastructure (HVAC, security systems) - Test & measurement equipment

6. Leading Manufacturers and Products

Manufacturer Representative Product
Phoenix Contact PTFIX series (Modular rail-mounted terminals)
Weidm ller SAM series (Spring cage technology)
TE Connectivity Deutsch series (Harsh environment solutions)
WAGO 280 series (Lever-action clamps)

7. Selection Guidelines

Key considerations: - Electrical requirements (Current/voltage ratings) - Environmental conditions (Temperature, vibration) - Installation constraints (Space limitations, tool access) - Maintenance needs (Service life, reusability) - Compliance standards (UL, IEC, RoHS) For example, in railway applications select spring terminals with anti-vibration features; for high-temperature environments choose models with ceramic insulation.

8. Industry Trends

Current development directions: - Miniaturization with higher contact density - Smart terminal blocks with integrated diagnostics - Enhanced flame-retardant materials (UL94 V-0 rated) - Modular systems with tool-less expandability - Increased adoption of surface-mount technology (SMT) Market growth driven by Industry 4.0 automation and EV infrastructure expansion.

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