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3.81mm Pitch PCB Mount Screw Terminal Block Connector

3.81mm Pitch PCB Mount Screw Terminal Block Connector

The terminal is suitable for a variety of wire diameters, supports single-strand and multi-strand wires, and is easy to install and maintain. It is widely used in industrial control, lighting equipment, power systems, communication equipment and household appliances.

  • Item No :

    H15EDGKN-3.5
  • Payment :

    T/T
  • Product Origin :

    China
  • Color :

    green ,we can also make other color if meet moq

Product Overview

This 3.81mm pitch PCB mounting screw terminal connector has a compact design and is suitable for wiring needs of various electronic circuit boards. It is made of high-quality materials to ensure excellent electrical performance and mechanical stability. The terminal fixes the wire with screws, which is firmly connected and can effectively prevent loosening and poor contact. It is especially suitable for use in vibration environments.

The terminal spacing is 3.81 mm, which is suitable for a more compact wiring design and effectively saves circuit board space. Its pins are made of tin-plated copper alloy, which has good conductivity and corrosion resistance, ensuring long-term stable operation. The shell is made of flame-retardant plastic, which is resistant to high temperature and impact, and meets the safety requirements in industrial applications.

Features

  • Small size, space-saving layout: The spacing of this terminal is 3.81mm, which is more compact than the common 5.08mm. It is very suitable for circuit boards with limited space. The layout is compact and does not waste board area.
  • Screw fixation, more reliable connection: The traditional screw lock wire method is adopted. After tightening, the wire will not loosen easily. It is especially suitable for vibration scenes, such as equipment control boxes, power modules, etc. Simple installation and convenient wiring: The screw interface has a large opening and can be directly screwed with a small flat screwdriver. The wire is stripped and inserted, and tightened. Later maintenance is also easy to operate.
  • Supports multiple wire diameters: This terminal supports 22~16 AWG wires, single strands and multiple strands can be used, and it is not picky about wire materials.
  • Solid materials and long-term durability: The conductive part is tinned copper, which is anti-oxidation and has a stable conductive effect; the shell is flame-retardant material, which is not easy to age after long use and is safer.

1.Type and Pole

Type: Pcb Pluggable Screw Terminal Block

Pole:

2 pin terminal block 3 pin terminal block 4 pin terminal block 5 pin terminal block 6 pin terminal block 7 pin terminal block
8 pin terminal block 9 pin terminal block 10 pin terminal block 11 pin terminal block 12 pin terminal block 13 pin terminal block
14 pin terminal block 15 pin terminal block 16 pin terminal block 17 pin terminal block 18 pin terminal block 19 pin terminal block
20 pin terminal block  21 pin terminal block 22 pin terminal block 23 pin terminal block 24 pin terminal block  

2.Material Of Pluggable Terminal Block

Housing PA66, UL94V-0
Screw M2.0 steel,Zinc plated,“-” slot type
Contact Copper alloy,Tin plated
Clamp Copper alloy ,Tin Plated

3.Electrical Of Pluggable Terminal Block

Rated Voltage

 UL        IEC

300V       250V

Rated Current 8A       7A
Contact Resistance 20mΩ(MAX)
Insulation Resistance 500MΩ/DC500V
Withstanding Voltage AC 1500V/1 Min
Wire range 28-16 awg

4.Mechanical Of Pluggable Terminal Block

Temp. Range -40℃~ +105℃
MAX Soldering +250, for 5 Sec.

5.Dimensions

dimensions drawing

6.Advantages

☑ Adapt to multi-type sockets, device design is highly flexible

☑ Keying requirements can be met

☑ Universal installation method, suitable for various situations

7.Package Of Pluggable Terminal Block

We choose the high quality and safe packaging material to make sure your order won't be damaged during delivery.

These trade terms are acceptable:EXW,FOB,CFR,CIF.

terminal block package

8.Application Of Pluggable Terminal Block

1.Motion controller    2.Three-phase power meter   3.Microcomputer protection device  4.Electric equipment

5.Automation equipment  6.Security equipment  7.Internet of things equipment

pcb terminal block application 1 pcb terminal block application 2 pcb terminal block application 3 pcb terminal block application 4

TERMINAL BLOCK FAQ

Q1: What practical benefits does the 3.81 mm 180° straight flanged plug bring to cabinet wiring projects?

A: This is a straight‑through plug with side mounting flanges.

Flanges lock the plug to chassis or metal brackets with screws.

Cable pull stress transfers to the flange, not solder connections.

180‑degree straight layout works well for vertical wiring inside enclosures.

It is commonly used for PLC I/O, sensor and small actuator signal circuits.

Whole wiring harnesses can be unplugged for fast maintenance.

It is built for low‑voltage signal loops, not high‑power motor loads.

Q2: What electrical ratings and wire range apply to this 3.81 mm 180° flanged plug?

A: Typical ratings: 300 V, 8‑10 A per contact under IEC and UL standards.

Compatible with 0.5‑1.5 mm² solid or stranded conductors.

Fine‑stranded wires require wire ferrules for reliable contact.

Do not connect heavy motor power circuits to this connector.

On‑site feedback shows most connection faults come from improper wire preparation, not component defects.

Q3: What common assembly mistakes happen with the 3.81 mm 180° flanged plug?

A: Many installers over‑tighten flange fixing screws.

Too much torque may crack the plastic housing or deform mounting brackets.

Ensure flange surfaces sit flat against mounting faces.

Deburr metal mounting holes. Sharp burrs create hidden mechanical stress.

Never force‑push the plug into the header. Excessive force bends pins or damages locking structures.

Check full seating after mating. You should feel a clear locking click.

Avoid pulling cables directly on the plug body to prevent solder joint damage.

Q4: Can I mix 3.81 mm 180° flanged plugs and headers from different manufacturers?

A: 3.81 mm pitch is industry‑standard, so parts may fit physically.

But pin thickness, contact depth, flange dimensions and spring pressure vary across brands.

Cross‑brand mating may cause intermittent contact after cabinet vibration and temperature swings.

Use matched plug‑header sets from one supplier for mass‑produced cabinets.

If cross‑brand pairing cannot be avoided, run vibration and thermal‑cycle tests before large‑volume production.

Q5: What incoming inspection and commissioning checks are key for this connector?

A: Inspect pin straightness on incoming batches. Bent pins cause partial mating and unstable signals.

Check flange mounting holes for deformation.

Test plug engagement and release for smooth operation without jamming.

During cabinet commissioning, perform light pull tests on each wired cable.

Confirm flange absorbs cable tension instead of solder joints.

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