Terminal Blocks - Barrier Blocks

Image Part Number Description / PDF Quantity Rfq
40.006

40.006

Altech Corporation

TERM STRIP PNL MNT ATS1.5/6 6 P

4912850

CB6/3H

CB6/3H

Altech Corporation

CERAMIC EUROBLOCK 3P 30A 300V 20

4150

MT-2113

MT-2113

Altech Corporation

BARRIER STRIP 1000MMPS 20A 300V

0

MT-2118

MT-2118

Altech Corporation

BARRIER STRIP 1000MMPS 20A 300V

0

40.004

40.004

Altech Corporation

TERM STRIP PNL MNT ATS1.5/4 4 P

490700

HE10WPR/07

HE10WPR/07

Altech Corporation

EUROSTRIP 7P15MM FLATBASE 50A 30

0

MT-2107

MT-2107

Altech Corporation

BARRIER STRIP 1000MMPS 20A 300V

0

HE25-10

HE25-10

Altech Corporation

10P JUNCTION BOX TERM BLOCK

0

HE16WPR/04

HE16WPR/04

Altech Corporation

EUROSTRIP 4P15MM FLATBASE 63A 30

1700

40.502

40.502

Altech Corporation

TERM STRIP PNL MNT ATSF6/2 2 P 1

10001800

HE1HWPR/04

HE1HWPR/04

Altech Corporation

EUROSTRIP 4P 8MM STANDOFF 20A 60

2700

HE1HWPR/08

HE1HWPR/08

Altech Corporation

EUROSTRIP 8P 8MM STANDOFF 20A 60

200

40.311

40.311

Altech Corporation

TERM STRIP PNL MNT ATSF2.5/11 11

250

MT-2116

MT-2116

Altech Corporation

BARRIER STRIP 1000MMPS 20A 300V

0

HE16WPR/08

HE16WPR/08

Altech Corporation

EUROSTRIP 8P15MM FLATBASE 63A 30

0

40.205

40.205

Altech Corporation

TERM STRIP PNL MNT ATS2.5/5 5 P

750

HE42SST/08

HE42SST/08

Altech Corporation

EUROSTRIPPLUG 8P 10MMPS STANDOFF

100

40.711

40.711

Altech Corporation

TERM STRIP PNL MNT 600V 63A

0

HE42ST/10

HE42ST/10

Altech Corporation

EUROSTRIPPLUG 10P 10MMPS FLAT BA

1100

HE4HNWPR/08

HE4HNWPR/08

Altech Corporation

EUROSTRIP 8P10MM STANDOFF 30A 60

900

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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