Terminal Blocks - Barrier Blocks

Image Part Number Description / PDF Quantity Rfq
HE4HNWPR/06

HE4HNWPR/06

Altech Corporation

EUROSTRIP 6P10MM STANDOFF 30A 60

1650

40.504

40.504

Altech Corporation

TERM STRIP PNL MNT ATSF6/4 4 P 1

1007800

40.410

40.410

Altech Corporation

TERM STRIP PNL MNT ATS6/10 10 P

250

HE1HWPR/02

HE1HWPR/02

Altech Corporation

EUROSTRIP 2P 8MM STANDOFF 20A 60

800

MT-2120

MT-2120

Altech Corporation

BARRIER STRIP 1000MMPS 20A 300V

0

HE42ST/09

HE42ST/09

Altech Corporation

EUROSTRIPPLUG 9P 10MMPS FLAT BAS

0

40.409

40.409

Altech Corporation

TERM STRIP PNL MNT ATS6/9 9 P 12

0

HE42BU/05

HE42BU/05

Altech Corporation

EUROSTRIP SOCKET 5P10MMPS FLAT B

0

40.206

40.206

Altech Corporation

TERM STRIP PNL MNT ATS2.5/6 6 P

2500

HE1HWPR/11

HE1HWPR/11

Altech Corporation

EUROSTRIP11P 8MM STANDOFF 20A 60

0

HE42SBU/02

HE42SBU/02

Altech Corporation

EUROSTRIP SOCKET2P10MMPS STANDOF

0

HE1HWPR/12

HE1HWPR/12

Altech Corporation

EUROSTRIP12P 8MM STANDOFF 20A 60

1700

40.506

40.506

Altech Corporation

TERM STRIP PNL MNT ATSF6/6 6 P 1

1461150

CB4/2

CB4/2

Altech Corporation

CERAMIC EUROBLOCK2P 20A 300V 24-

4500

HE1HWPR/03

HE1HWPR/03

Altech Corporation

EUROSTRIP 3P 8MM STANDOFF 20A 60

1000

HE6WPR/11

HE6WPR/11

Altech Corporation

EUROSTRIP11P12MM FLAT BASE 40A 3

75

CB4/1/5S

CB4/1/5S

Altech Corporation

CERAMIC EUROBLOCK1P 5PCS 20A 300

0

Terminal Blocks - Barrier Blocks

1. Overview

Barrier blocks are modular electrical connectors used to securely join two or more wires. They consist of a conductive metal strip housed in an insulating body with screw or spring-based clamping mechanisms. These components play a critical role in industrial electrical systems by enabling reliable signal and power transmission while simplifying maintenance and modifications.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Screw-Type Barrier BlocksMechanical screw clamping system with high contact forceIndustrial control panels, HVAC systems
Spring-Type Terminal BlocksPush-in spring clamping for quick installationAutomation equipment, test benches
Barrier Strips with Insulation DisplacementConnects wires without removing insulationTelecom equipment, field wiring
High-Voltage Barrier BlocksExtended creepage distances and reinforced insulationPower distribution units, renewable energy systems

3. Structure & Components

Typical construction includes: - Conductive element (phosphor bronze or brass with tin plating) - Insulating housing (PA66 or PBT thermoplastic) - Clamping mechanism (M3-M5 screws or compression springs) - Mounting flanges for DIN rail or panel mounting - Optional features: test points, marking areas, finger protection

4. Key Technical Specifications

ParameterImportance
Rated Current (5-300A)Determines power transmission capacity
Withstand Voltage (500V-10kV)Ensures electrical safety
Insulation Resistance (>10^12 )Maintains signal integrity
Operating Temperature (-60 C to +150 C)Defines environmental suitability
Vibration Resistance (up to 15g)Guarantees mechanical stability

5. Application Areas

Primary industries include: - Industrial automation (PLC cabinets, motor controls) - Energy systems (solar inverters, battery storage) - Transportation (railway control systems) - Building technology (HVAC, emergency lighting) - Test & measurement equipment

6. Leading Manufacturers & Products

ManufacturerRepresentative Product
Phoenix ContactPT 10-2.5/HC series
Weidm llerSAM 41 series
ABBUT 2.5-BK series
TE ConnectivityCB series barrier strips
SchurterK1 series with fuse integration

7. Selection Recommendations

Key considerations: - Match current/voltage ratings with system requirements - Environmental factors (temperature, vibration) - Wire size compatibility (AWG/metric) - Installation space constraints - Maintenance accessibility - Compliance with standards (IEC 60947-7)

Case Study: In industrial automation control cabinets, Phoenix Contact's PT 10-2.5/HC series provides reliable 24V DC signal connections with tool-free push-in wiring.

8. Industry Trends

Emerging developments: - Miniaturization for compact control systems - Integrated diagnostics and condition monitoring - Increased creepage distances for EV charging infrastructure - Halogen-free materials for improved fire safety - Smart terminal blocks with IoT connectivity

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