UK-3N Terminal Blocks

The internationally recognized screw connection meets the most stringent requirements and covers a wide area of application. For the most stringent requirements, the screw connection has also proven itself in the wiring of large conductor cross-sections.

Additional information

Place of Origin

Zhejiang,China

Model Number

UK-3N

Color

Blue, grey

Rated Current

32A

Rated Voltage

400V

Mounting

Din rail

Material of Shell

Nylon PA66

Metal Material

brass conductor

Dimensions

42.5×47×5.2

Screw specs

M3

Rigid conductor

0.2-4

Flexivle conductor

0.2-2.5

Why Choose Shengling UK Series Screw Terminal Blocks?

For UK series screw terminal blocks, Shengling optimizes the classic design to achieve a balance of versatility, reliability, and ease of installation. These terminals are suitable for a wide range of control and power distribution applications.

Key advantages:

  • Secure connection: Screw-clamp design ensures firm and vibration-resistant contact
  • High versatility: Multiple sizes fit different wire ranges and applications
  • Flexible assembly: Easily mounted and combined on DIN rails
  • Safe and durable: Quality conductive materials with strong insulation
  • Neat wiring: Compact design with clear layout for easier maintenance

 

Product Details

46
UK详细页一套+2

The range of heat and cold protection for UK terminal blocks.

UK terminal blocks are typically straight-through terminals commonly found in industrial control cabinets. Their typical operating temperature range is approximately -60°C to 110°C (including self-heating).

Some models may specify a wider environmental range for storage/transportation; however, the specific model’s datasheet should be consulted for accurate specifications. Their main advantages are reliable wiring, good insulation, easy installation and maintenance, and suitability for modular and scalable cabling solutions.

Key advantages of the UK

The robust connection provides reliable electrical contact, making it suitable for industrial environments.

The insulated housing helps reduce the risk of short circuits and electric shock.

Installation and maintenance are relatively easy, with faster wiring replacement, expansion, and troubleshooting.

Highly modular, it is suitable for DIN rail control cabinets, resulting in neater wiring.

It is generally more stable in vibration environments than simple splicing methods, making it suitable for industrial automation applications.

23
UK详细页一套+1

Is the UK wiring method difficult?

The wiring method for UK terminal blocks is not difficult. It’s generally a “screw-tightening” structure. Normally, as long as the wire stripping length is appropriate,

 The wire is fully inserted, and the screw is tightened; it’s fine. Its operation logic is quite intuitive, making it suitable for on-site assembly and later wiring modifications. If it’s your first time using it, the most common problem isn’t “not knowing how to connect,” but rather stripping the wire too short, not inserting it fully, or using the wrong screw tightness.

For detailed wiring instructions, please watch the video below.

UK wiring method

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Model
Rated current
Rated voltage
Rigid conductor
Flexible conductor
Material
Size
End plate
Neutral jumper
Connection method
MBK3
32A
400V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
28*31.5*5.2
D-MBK3/5
FB1 10-5
screw connection
MBKKB-2.5
24A
第 41 条
400V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
62*48*5.2
MBKKB2.5
FBRNI 10-5
screw connection
MBKKB-2.5-LA
24A
第 41 条
400V
2-3.5mm²
0.2-2.5mm²
Brass/NylonPA66
62*48*5.2
MBKKB2.5
FBRNI 10-5
screw connection
UK-1.5N
17.5A
第 41 条
400V
0.14-1.5mm²
0.14-1.5mm²
Brass/NylonPA66
42.5*42*4.2
D-UK1.5N
FB1 10-4
screw connection
UK-2.5B
32A
400V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
42.5*42*6.2
D-UK2.5N
FB1 10-6
screw connection
UK-3N
32A
400V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
42.5*47*5.2
D-UK4/10
FB1 10-5
screw connection
UK-5N
41A
第 41 条
400V
0.2-6mm²
0.2-4mm²
Brass/NylonPA66
42.5*47*6.2
D-UK4/10
FB1 10-6
screw connection
UK-6N
56A
第 41 条
400V
2.5-25mm²
4-16mm²
Brass/NylonPA66
42.5*47*8.2
D-UK4/10
FB1 10-10
screw connection
UK-10N
76A
第 41 条
400V
0.5-16mm²
0.5-10mm²
Brass/NylonPA66
42.5*47*10.2
D-UK4/10
FB1 10-8
screw connection
UK-16N
101A
第 41 条
400V
2.5-25mm²
4-16mm²
Brass/NylonPA66
42.5*47*12.2
D-UK16
FB1 10-12
screw connection
UK-25N
110A
第 41 条
400V
10-25mm²
10-25mm²
Brass/NylonPA66
42.5*47*14.2
D-UK25
FB1 10-14
screw connection
UK-35N
125A
第 41 条
400V
10-35mm²
10-35mm²
Brass/NylonPA66
51.2*62*15.2
/
FB1 12-15

FB1 13-15

screw connection
UIK-35N
125A
第 41 条
800V
10-35mm²
10-35mm²
Brass/NylonPA66
55*51*16
/
FB1 12-15

FB1 13-15

screw connection
UK-50N
150A
第 41 条
800V
16-50mm²
25-50mm²
Brass/NylonPA66
70.5*83.5*20.1
/
FB1 2-20FB1 3-20
screw connection
UK-95N
232A
第 41 条
1000V
25-95mm²
35-95mm²
Brass/NylonPA66
83*97.5*25.2
/
EB1 2-25

EB1 3-25

screw connection
UK-150N
309A
第 41 条
1000V
35-150mm²
50-150mm²
Brass/NylonPA66
100*119*31
/
EB1 2-31

EB1 3-31

screw connection
UK-240N
415A
第 41 条
1000V
70-240mm²
70-240mm²
Brass/NylonPA66
101*125*36
/
EB1 2-36

EB1 3-36

screw connection
UDK4
32A
第 41 条
690V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
63.5*47*6.2
D-UIK4
FB1 10-6
screw connection
MTKP-P
16A
第 41 条
400V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
46*51.5*5.2
/
EB1 2-5

EB1 3-5

screw connection
UKK3
32A
第 41 条
400V
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
56*62*5.2
D-UKK3/5
FB1 10-6
screw connection
UKK5
32A
第 41 条
400V
0.2-4mm²
0.2-4mm²
Brass/NylonPA66
56*62*6.2
D-UKK3/5
FB1 10-6
screw connection
URTK-4S
57A
第 41 条
500V
0.5-10mm²
0.5-6mm²
Brass/NylonPA66
42.5*50*8.2
D-URTK/S
FB10-URTK/S
screw connection
URTK-6S
57A
第 41 条
400V
0.5-6mm²
0.5-6mm²
Brass/NylonPA66
72.5*50*8.2
D-URTK/S
FB10-URTK/S
screw connection
UK5-HESI
6.3A
第 41 条
400V
0.2-4mm²
0.2-4mm²
Brass/NylonPA66
72.5*56.5*8.2
/
EB 2-8/3-8/10-8
screw connection
UK-10RD
10A
第 41 条
500V
0.5-16mm²
0.5-16mm²
Brass/NylonPA66
62*59*12
/
/
screw connection
USLKG-2.5
32A
第 41 条
/
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
43.5*41*6.2
/
/
screw connection
USLKG-3
32A
第 41 条
/
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
42.5*42*5.2
/
/
screw connection
USLKG-5
41A
第 41 条
/
0.2-4mm²
0.2-4mm²
Brass/NylonPA66
42.5*47*6.2
/
/
screw connection
USLKG-6
57A
第 41 条
/
0.2-10mm²
0.2-6mm²
Brass/NylonPA66
42.5*47*8.2
/
/
screw connection
USLKG-10
76A
第 41 条
/
0.5-10mm²
0.5-6mm²
Brass/NylonPA66
42.5*47*10.2
/
/
screw connection
USLKG-16
101A
第 41 条
/
2.5-25mm²
4-16mm²
Brass/NylonPA66
42.5*54*12.2
/
/
screw connection
USLKG-35
125A
第 41 条
/
0.75-50mm²
0.75-30mm²
Brass/NylonPA66
50*62*15.2
/
/
screw connection
USLKG-50
150A
第 41 条
/
16-50mm²
25-50mm²
Brass/NylonPA66
71*83.5*20
/
/
screw connection
USLKG-95
232A
第 41 条
/
25-95mm²
35-95mm²
Brass/NylonPA66
71*99*25
/
/
screw connection
UK-5NTWIN
32A
第 41 条
/
0.2-10mm²
0.2-4mm²
Brass/NylonPA66
50.5*47*6.5
/
/
screw connection
DIK-1.5
30A
第 41 条
/
0.2-4mm²
0.2-2.5mm²
Brass/NylonPA66
73*54*6.2
/
/
screw connection

Common problems with UK series universal screw terminal blocks

Are UK terminal blocks easy to operate?

This type of terminal block is commonly known as a spring terminal block, lever-type quick-connect terminal block, or rail terminal block. Its key selling points are screwless operation, quick wiring, and reusable assembly and disassembly, making it suitable for wiring scenarios in distribution cabinets, control cabinets, lighting, and equipment.

Under normal use, it will not cause overheating, but if there is poor contact, loose screws, overload of the selected wire, or mismatch between wire diameter and terminal specifications, it may cause overheating, and in severe cases, it may burn black or even burn out.

Commonly found in:

Control cabinets.

Distribution boxes.

Automation equipment.

Industrial control systems.

Electrical installation scenarios requiring neat wiring.

The most crucial factors are:

What wire diameter is required?

Rated current.

Rated voltage.

Applicable temperature range.

Does the flexible wire need to be terminated?

Is it suitable for DIN rail mounting?

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