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Industrial Connector Supplier

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Industrial Connector

Built for demanding industrial power distribution, our Industrial Connector range covers common site voltages and wiring schemes, including 110–130V, 220–240V, 380–415V, and 3P+N+E configurations. Options include 16A/32A/63A ratings with IP44 splash protection and IP67 waterproof designs for harsh outdoor or wet environments. With clear earth-position coding (e.g., 4h/6h) and rugged housings, these connectors are well-suited for construction, workshops, and equipment OEMs. As an experienced Industrial Connector Supplier and Industrial Connector Manufacturer, Wenzhou Shangfeng Electric Co., Ltd. supports customization based on customer requirements or parameters.

SFK-509 / SFK-521 IP44 Safe Voltage Industrial Connector Third Generation High-end Industrial Connectors

SFK-509 / SFK-521 IP44 Safe Voltage Industrial Connector

Earth contact position 4h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 155 195.9
b 81 102.7
c 51.1 64.2
d 49.5 64.2
e 86 101.8
f 34.7 37
g 57 71.2
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  110-130V~2P+E
Protection degree:  IP44

SFK-510 / SFK-522 220–240V Industrial Connector Third Generation High-end Industrial Connectors

SFK-510 / SFK-522 220–240V Industrial Connector

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 155 195.9
b 81 102.7
c 51.1 64.2
d 49.5 64.2
e 86 101.8
f 34.7 37
g 57 71.2
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  220-240V~2P+E
Protection degree:  IP44

SFK-514 / SFK-526 High-Tension 380–415V Industrial Connector Third Generation High-end Industrial Connectors

SFK-514 / SFK-526 High-Tension 380–415V Industrial Connector

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 155 195.9
b 81 102.7
c 51.2 64.2
d 55.7 64.2
e 90.4 101.8
f 37 37
g 61.2 71.2
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  380-415V~3P+E
Protection degree:  IP44

SFK-5 / SFK-6 Wide-Range Voltage Industrial Connector Third Generation High-end Industrial Connectors

SFK-5 / SFK-6 Wide-Range Voltage Industrial Connector

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 160 195
b 86 103.2
c 51 62.8
d 63 70.8
e 97.2 104.9
f 37 37
g 75.5 80
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  220-380V~/240-415V~3P+N+E
Protection degree:  IP44

SFK-1236 Large-Diameter Cable Entry Industrial Connector Third Generation High-end Industrial Connectors

SFK-1236 Large-Diameter Cable Entry Industrial Connector

Earth contact position 4h
Rated current(A) 63
Pole 3
Dimension(mm) a 257
b 112.5
c 85
d 77.4
e 108
f 34
g 92
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  16A,32A
Voltage(V):  110-130V~2P+E
Protection degree:  IP44

SFK-1237 Electrical 220–240V Industrial Connector Third Generation High-end Industrial Connectors

SFK-1237 Electrical 220–240V Industrial Connector

Earth contact position 6h
Rated current(A) 63
Pole 3
Dimension(mm) a 257
b 112.5
c 85
d 77.4
e 108
f 34
g 92
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  63A
Voltage(V):  220-240V~2P+E
Protection degree:  IP44

SFK-1241 IP44 High Voltage Industrial Connector Third Generation High-end Industrial Connectors

SFK-1241 IP44 High Voltage Industrial Connector

Earth contact position 6h
Rated current(A) 63
Pole 4
Dimension(mm) a 257
b 112.5
c 85
d 77.4
e 108
f 34
g 92
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  63A
Voltage(V):  380-415V~3P+E
Protection degree:  IP44

SFK-1245 IP44 Electrical Safety Industrial Connector Third Generation High-end Industrial Connectors

SFK-1245 IP44 Electrical Safety Industrial Connector

Earth contact position 6h
Rated current(A) 63
Pole 5
Dimension(mm) a 257
b 112.5
c 85
d 77.4
e 108
f 34
g 92
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  63A
Voltage(V):  220-380V~/240-415V~3P+N+E
Protection degree:  IP44

SFK-539 / SFK-551 IP67 2P+E Waterproof Industrial Connector Third Generation High-end Industrial Connectors

SFK-539 / SFK-551 IP67 2P+E Waterproof Industrial Connector

Earth contact position 4h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 158.6 199.2
b 81 102.7
c 54.7 67.5
d 49.5 64.2
e 71.7 95.5
f 79.6 98.7
g 34.7 37
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  110-130V~2P+E
Protection degree:  IP67

SFK-540 / SFK-552 IEC60309 Standard Voltage 220–240V Industrial Connector Third Generation High-end Industrial Connectors

SFK-540 / SFK-552 IEC60309 Standard Voltage 220–240V Industrial Connector

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 158.6 199.2
b 81 102.7
c 54.7 67.5
d 49.5 64.2
e 71.7 95.5
f 79.6 98.7
g 34.7 37
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  220-240V~2P+E
Protection degree:  IP67

SFK-544 / SFK-556 3P+E Three-Phase Industrial Connector Third Generation High-end Industrial Connectors

SFK-544 / SFK-556 3P+E Three-Phase Industrial Connector

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 158.6 199.2
b 80.6 102.7
c 54.9 67.5
d 55.7 64.2
e 80.6 95.5
f 85.2 98.7
g 37 37
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  380-415V~3P+E
Protection degree:  IP67

SFK-550 / SFK-562 3P+N+E Power Distribution Industrial Connector Third Generation High-end Industrial Connectors

SFK-550 / SFK-562 3P+N+E Power Distribution Industrial Connector

Earth contact position 6h
Rated current(A) 16 32
Pole 5
Dimension(mm) a 142 200
b 119 103.2
c 56 67.8
d 63 70.8
e 89 102
f 92.8 104.9
g 37 37
Cable nominal cross-section area(mm²) 1.5-2.5 4-6
Contact us
Current(A):  16A,32A
Voltage(V):  220-380V~/240-415V~3P+N+E
Protection degree:  IP67

About
Wenzhou Shangfeng Electric Co.,Ltd.
Wenzhou Shangfeng Electric Co.,Ltd.
Wenzhou Shangfeng Electric Co.,Ltd. is located in Liushi, the "Chinese Electrical Capital", adjacent to the Yongtaiwen Expressway and National Highway 104, the largest port in Wenzhou - Qili Port in the south, and the Wenzhou Airport and Railway Station in the west. The sea, land, and air transportation is very convenient.
As China Industrial Connectors suppliers and Industrial Connectors factory, we are mainly engaged in wholesale Industrial Connectors, The company has introduced advanced technology and equipment, passed the ISO9001 international quality system, China Quality Certification Center CQC certification, and obtained the European Community CE safety certification, ROHS environmental protection directive certification, and continuously introduced senior technical personnel and enterprise management personnel, and has gradually acquired production technology. The company specializes in producing industrial plugs, sockets, couplers (connectors), nylon cable ties, and other products. The company strictly follows international standards such as IEC60309, EN60309, and CEE17 and national standards such as GB11918 and GB11919. The product design is unique and the structure is reasonable.
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News

Industry Insight: Buying Industrial Connectors Like a Site Engineer (Not a Catalog)

Most failures with an Industrial Connector don't happen because the rating was "wrong on paper." They happen when connectors meet real life: wet hands, dragged cables, mixed crews, and equipment that changes from one job to the next. A smarter selection process focuses on preventing the most common field problems—mis-mating, contamination, overheating, and downtime.

1) Start with the "mismatch risks," not the datasheet

On multi-contractor sites, the biggest hidden cost is incompatibility.

  • Standardized coding (voltage family + earth position) helps stop accidental cross-connection
  • Consistent pole formats (2P+E, 3P+E, 3P+N+E) reduce "it almost fits" mistakes
  • Clear visual differentiation speeds up work and lowers operator error

This is why many buyers choose an Industrial Connector Supplier that can keep one consistent system across projects.

2) Think in "abuse scenarios": where will it be used and handled?

The right connector is the one that survives how people actually treat it.

  • If it will sit on the ground, face rain, or be cleaned often, prioritize sealing and contamination resistance (your Waterproof options matter most here)
  • If it's for indoor workshop use with occasional splashes, a lighter protection level can be practical
  • If plug/unplug happens many times per shift, durability at the contact interface becomes more important than aesthetics

In plain terms: buy for the worst day on site, not the best day in the warehouse.

3) Current rating: avoid heat problems by planning for load behavior

Overheating usually comes from real-world load patterns:

  • Multiple tools on one circuit, intermittent surges, long cable runs, and loose connections
  • High-duty equipment (heaters, compressors, welders) that draws steadily for long periods

A conservative rating choice and stable contact design reduce temperature rise and extend service life—often cheaper than replacing "just one more melted plug."

4) What procurement should ask an Industrial Connector Manufacturer

If you're sourcing beyond a one-off purchase, the questions change:

  • Can the manufacturer support consistent production across batches?
  • Are compliance and test controls stable (quality system + export-ready documentation)?
  • Can they keep markings, color coding, and configuration consistent for your installers?

This is where working directly with an Industrial Connector Manufacturer can simplify long-term supply.

5) Customization: when standard SKUs create friction

Many projects don't fail because the connector is bad—they fail because the connector doesn't match the job workflow. The corresponding products can be customized according to the requirements or parameters provided by customers, such as:

  • Outlet/plug combinations for a specific market
  • Ratings, cable entry preferences, and labeling/marking logic
  • Color identification that matches your rental fleet or site rules

A good Industrial Connector choice is really a risk-control decision: reduce misconnection, keep water/dust out, and prevent heat-related failures. As an established Industrial Connector Supplier and Industrial Connector Manufacturer, WENZHOU SHANGFENG ELECTRIC CO., LTD supports both standard selections and parameter-based customization—helping buyers standardize site power connections and cut maintenance headaches.