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3 Phase Industrial Plug

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3/4/5 Pin Industrial Plug

SFE Industrial Plugs are built for real industrial pressure—high temperatures, airborne dust, wet conditions, and constant plugging/unplugging. Using tough Nylon PA66, each plug is designed to keep its shape and grip over time, helping maintain reliable contact and steady power delivery in demanding environments.

Across manufacturing floors, maintenance bays, construction sites, docks, and public-utility projects, a secure connection is often the difference between smooth operations and unexpected downtime. That's why SFE focuses on practical on-site usability: clear color options for quick circuit recognition, rugged housings that support water- and dust-resistant performance, and a design that makes installation and routine replacement straightforward.

With a quality-first manufacturing system and certifications aligned with international expectations, SFE products have earned long-term trust in both domestic and overseas markets. When you need industrial power connectors that combine durability, safety, and consistent performance, choose the model that fits your current rating, voltage, and application scenario—and keep your equipment running with confidence.

_0010_247

SFK-247 SFK-259 SFK-247 / SFK-259 110–130V Low-Voltage Industrial Plug

Earth contact position 4h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 140 173
b 116 144
c 43.5 57
d 38.5 51
e 17.5 25
f 47 62
g 58 80.7
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

_0009_248

SFK-248 / SFK-260 IP44 Splash-Protected 220–240V Industrial Plug

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 140 173
b 116 144
c 43.5 57
d 38.5 51
e 17.5 25
f 47 62
g 58 80.7
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

_0008_252

SFK-252 / SFK-264 16A/32A Industrial Plug

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 140 173
b 116 144
c 49.5 57
d 43.5 51
e 21.5 25
f 52 62
g 66.7 80.7
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

_0011_3

SFK-3 / SFK-4 Wide Range Strong Voltage Industrial Plug

Earth contact position 6h
Rated current(A) 16 32
Pole 5
Dimension(mm) a 144 173
b 121 144
c 56 63.3
d 50 56.5
e 26.5 30.3
f 60 68.7
g 75 89
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

_0003_1226

SFK-1226 IP44 Low-Voltage Rated Safety Industrial Plug

Earth contact position 4h
Rated current(A) 63
Pole 3
Dimension(mm) a 238.9
b 179.4
c 66
d 100.1
e 75.5
f 36.5
g 69.5
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  63A
Voltage(V):  110-130V~2P+E
Protection degree:  IP44

_0002_1227

SFK-1227 63A 6H Position-Keyed Industrial Plug

Earth contact position 6h
Rated current(A) 63
Pole 3
Dimension(mm) a 238.9
b 179.4
c 66
d 100.1
e 75.5
f 36.5
g 69.5
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  63A
Voltage(V):  220-240V~2P+E
Protection degree:  IP44

_0001_1231

SFK-1231 380–415V Three-Phase Industrial Plug

Earth contact position 6h
Rated current(A) 63
Pole 4
Dimension(mm) a 238.9
b 179.4
c 66
d 100.1
e 75.5
f 36.5
g 69.5
Cable nominal cross-section area(mm²) 10-16
Contact us
Current(A):  63A
Voltage(V):  380-415V~3P+E
Protection degree:  IP44

_0000_1235

SFK-1235 Heavy Duty Reinforced Industrial Plug

Earth contact position 6h
Rated current(A) 63
Pole 5
Dimension(mm) a 238.9
b 179.4
c 66
d 100.1
e 75.5
f 36.5
g 69.5
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

_0007_277

SFK-277 / SFK-289 IP67 Waterproof 16A/32A Industrial Plug

Earth contact position 4h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 138 170
b 115 141
c 24.7 32.5
d 70.2 93.3
e 38.3 51
f 17.5 25
g 47 62.2
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:  IP67

_0006_278

SFK-278 / SFK-290 2P+E Grounded Industrial Plug

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 138 170
b 115 141
c 24.7 32.5
d 70.2 93.3
e 38.3 51
f 17.5 25
g 47 62.2
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:  IP67

_0005_282

SFK-282 / SFK-294 High-Voltage 380–415V Industrial Plug

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 144 170
b 120.5 141
c 25.2 32.5
d 78 93.3
e 43.8 51
f 21.5 25
g 52.2 62.2
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:  IP67

_0004_288

SFK-288 / SFK-300 IP67 Full-Sealed High Voltage Rated Industrial Plug

Earth contact position 6h
Rated current(A) 16 32
Pole 5
Dimension(mm) a 144 177
b 120.5 148
c 25.2 32.5
d 87 101
e 50.2 56.5
f 26.5 30.3
g 60 68.7
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 Plugs suppliers and Industrial Plugs factory, we are mainly engaged in wholesale Industrial Plugs, 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 Knowledge: Choosing the Right Industrial Plug Configuration for Safer Power Distribution

Selecting Industrial Plugs isn't only about amperage and voltage; the connector layout affects safety, compatibility, and how smoothly a site runs. Below is a field-focused guide to the most common configurations and where they fit.

3‑phase power: where it shines

A 3 Phase Industrial Plug is widely used for motors, pumps, compressors, and heavy machinery because it supports efficient power delivery and steady operation under load. In many facilities, choosing a proper 3‑phase connector reduces nuisance trips and overheating caused by under‑spec'd connections.

4‑pin vs. 5‑pin: the key difference

  • A 4 Pin Industrial Plug is typically used when you need three phases plus protective earth (PE) but no neutral—often suitable for specific motor circuits and industrial equipment designed without a neutral requirement.
  • A 5 Pin Industrial Plug includes a neutral conductor (L1/L2/L3/N/PE), making it the go-to option for mixed loads or systems that combine three‑phase power with single‑phase auxiliaries, controls, or electronics.

Environmental durability matters as much as wiring

In wet, dusty, or high‑traffic environments, stable contact performance depends on more than the metal pins. Nylon PA66 housings support mechanical strength and long-term fit, while water- and dust-resistant construction helps reduce contamination, corrosion, and connection failures—especially in outdoor work or wash-down areas.

Why this matters for modern installations (including LED systems)

As installations become more complex—such as large LED displays and supporting power/control hardware—connector reliability and clear on-site identification become critical. A well-matched plug type helps prevent misconnection, speeds maintenance, and improves overall operational safety.