Terminal Blocks - Barrier Blocks

Image Part Number Description / PDF Quantity Rfq
40.706

40.706

Altech Corporation

TERM STRIP PNL MNT ATSF16/6 6 P

320

40.302

40.302

Altech Corporation

TERM STRIP PNL MNT ATSF2.5/2 2 P

3400

40.710

40.710

Altech Corporation

TERM STRIP PNL MNT ATSF16/10 10

100

40.211

40.211

Altech Corporation

TERM STRIP PNL MNT ATS2.5/11 11

0

HE10WPR/05

HE10WPR/05

Altech Corporation

EUROSTRIP 5P15MM FLATBASE 50A 30

200

HE1HWPR/09

HE1HWPR/09

Altech Corporation

EUROSTRIP 9P 8MM STANDOFF 20A 60

0

40.306

40.306

Altech Corporation

TERM STRIP PNL MNT ATSF2.5/6 6 P

300

HE42SBU/05

HE42SBU/05

Altech Corporation

EUROSTRIP SOCKET 5P10MMPS STANDO

100

HE6HWPR/11

HE6HWPR/11

Altech Corporation

EUROSTRIP11P12MM STANDOFF 40A 60

200

40.708

40.708

Altech Corporation

TERM STRIP PNL MNT ATSF16/8 8 P

0

HE10HWPR/12

HE10HWPR/12

Altech Corporation

EUROSTRIP12P15MM STANDOFF 50A 60

1540

40.407

40.407

Altech Corporation

TERM STRIP PNL MNT ATS6/7 7 P 12

50

HE42ST/11

HE42ST/11

Altech Corporation

EUROSTRIPPLUG 11P 10MMPS FLAT BA

0

HE42ST/04

HE42ST/04

Altech Corporation

EUROSTRIPPLUG 4P 10MMPS FLAT BAS

1100

HE42SST/05

HE42SST/05

Altech Corporation

EUROSTRIPPLUG 5P 10MMPS STANDOFF

100

HE42SBU/11

HE42SBU/11

Altech Corporation

EUROSTRIP SOCKET11P10MMPS STANDO

0

40.104

40.104

Altech Corporation

TERM STRIP PNL MNT ATSF1.5/4 4 P

291

HE4WPR/08

HE4WPR/08

Altech Corporation

EUROSTRIP 8P10MM FLAT BASE 30A 3

950

MT-2121

MT-2121

Altech Corporation

BARRIER STRIP 1000MMPS 20A 300V

0

HE6WPR/02

HE6WPR/02

Altech Corporation

EUROSTRIP 2P12MM FLAT BASE 40A 3

100

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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