Product Overview
 

Ground terminal blocks (PE blocks) establish reliable, low-resistance protective earth connections in industrial electrical enclosures. Mounted directly onto standard DIN rails, these blocks mechanically and electrically bond equipment frames and control circuit protective conductors to the central panel earth. Built with electrolytic copper alloy current bars and UL94 V-0 flame-retardant polyamide housings, they are engineered to meet IEC 60947-7-2 short-circuit and mechanical performance requirements while maintaining stability under continuous operational vibration.

 

 
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Key Features

 

Low Contact Resistance

Optimized tin-plated electrolytic copper current bars ensure minimal voltage drop and secure fault current dissipation.

01

Vibration-Proof Connection

Engineered clamp designs maintain constant contact pressure, preventing conductor loosening in high-vibration machinery.

02

Standard DIN Rail Mounting

Snaps securely onto standard 35 mm DIN rails (NS 35/7.5 and NS 35/15), utilizing the rail as a shared ground bus bar.

03

Instant Visual Identification

Standardized green and yellow housing colors comply with international electrical standards for protective earth identification.

04

Modular Bridging

Accommodates plug-in jumpers for quick potential distribution and multi-tier grounding layouts.

05

 

Product Range & Selection

(Note: Rated currents are tested in accordance with standard IEC 60947-7-2.)

 

Model Series

Connection Type

Rated Cross-Section (mm2)

Rated Current

Mounting Rail

Typical Use Case

GTB-2.5

Screw / Spring

0.2 - 2.5

24 A

NS 35/7.5

Standard control circuits

GTB-4

Screw / Spring

0.2 - 4.0

32 A

NS 35/7.5

General machinery panels

GTB-10

Screw

0.5 - 10.0

57 A

NS 35/15

Medium power distribution

GTB-35

Heavy-Duty Screw

6.0 - 35.0

125 A

NS 35/15

Main incoming earth lines

 

Technical Specifications

 

Housing Material

Polyamide (PA66), Halogen-free, UL94 V-0 flammability rating

Metal Parts

High-conductivity electrolytic copper, corrosion-resistant tin plating

Clamping Yoke

Hardened spring steel, zinc-chromate plated

Rated Standards

IEC 60947-7-2, UL 1059, CSA C22.2

Operating Temperature

-40°C to +105°C

Stripping Length

8 mm - 18 mm (by cross-section)

 

Applications

 

Industrial automation control panels and PLC cabinets

 

Power distribution boards and switchgear assemblies

 

Renewable energy inverter and battery storage systems

 

HVAC and building automation control boxes

 

Railway signaling and transportation infrastructure

15EDGR-3.5 Plug-in Type Terminal Block

 

Manufacturing & Quality Control

 

 

Automated Stamping & Molding

High-precision progressive dies and automated injection molding lines ensure consistent dimensional tolerances for secure rail locking.

 

In-House Laboratory Testing

Every production batch undergoes torque endurance testing, salt spray corrosion testing (ASTM B117), temperature rise verification, and millivolt drop analysis per IEC standards.

 

Traceability & Compliance

Laser-etched batch numbers on terminal housings link directly to mill test certificates. Produced in ISO 9001 certified facilities with CE, RoHS, and UL compliance marks.

 

 

Customization & Supply Chain Support

 

127V-5.08 PCB Screw Terminal Block

Custom Marking

Laser-engraved terminal numbers, custom logos, or specific project tagging.

2EDGKDM-5.08 Plug-in Type Terminal Block

Pre-Assembled DIN Rails

Delivery of pre-populated assemblies with customized terminal configurations to reduce panel building labor time.

15EDGK-3.81 Plug-in Type Terminal Block

Logistics & Inventory

Maintained in buffer stock for immediate shipment, supporting flexible carton quantities (Standard packing: 50pcs/100pcs per box) and urgent project deadlines.

 

 

FAQ

 

Q: Can these blocks be mounted on standard steel and aluminum DIN rails?

A: Yes. The snap-on feet grip both steel and aluminum DIN rails securely, utilizing the rail itself as the mechanical ground bus.

Q: What documents and models are provided?

A: Material test reports, certificates of conformity (CoC), and 2D/3D CAD drawings (STEP files) are available for immediate download.

 

modular-1
RFQ / Inquiry CTA

Need bulk pricing, technical drawings (STEP files), or custom terminal block configurations for your upcoming project?
Request a Quote / Send BOM: [Submit Inquiry via Form]
Download 2D/3D CAD Drawings: [Access STEP Files]
Request Free Samples: [Order Sample Kit]
Direct Engineering Contact: Jay-xc@nb-xucheng.com

As one of the most professional ground terminal block manufacturers in China, we're featured by quality products and good service. Please rest assured to buy bulk customized ground terminal block made in China here from our factory. Contact us for pricelist and free sample.

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