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Home / Product / Industrial Sockets / Pannel Mounted Straight socket / Third Generation High-end Pannel Mounted Straight socket

Three-phase Industrial Socket

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3/4 Pin Industrial Socket

Built for modern control panels and power distribution enclosures, our Third‑Generation High‑End Panel‑Mounted Straight Socket range combines tidy front mounting with dependable industrial performance. Popular selections include 16A/32A 220–240V models in IP44 for protected indoor areas, plus heavy‑duty IP67 wide‑voltage options up to 63A/125A for harsh, wet or dusty sites. Choose the right layout fast—from a 3 Pin Industrial Socket for single‑phase circuits to Three-phase Industrial Socket configurations for equipment and feeders. With consistent 6h keying and installer‑friendly cable capacity, these sockets are a practical upgrade for OEM builds, service panels, and export projects.

_0013_1365

SFK-1365 / SFK-1394 2P+E Low-Voltage Panel-Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 31.8 40.8
g 8 8
g1 2 2
h 91 101.8
i 45 58
j 51.2 63
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

_0012_1366

SFK-1366 / SFK-1395 Nominal Voltage Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 31.8 40.8
g 8 8
g1 2 2
h 91 101.8
i 45 58
j 51.2 63
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

_0010_1390

SFK-1390 / SFK-1399 High Voltage Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 32.2 40.8
g 8 8
g1 2 2
h 92.4 101.8
i 52 58
j 51.1 63
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_1385

SFK-1385 / SFK-3451 Extended Voltage Range Panel-Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 5
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 31.1 39.8
g 8 8
g1 2 2
h 97.2 111.7
i 55 62
j 52.7 62.2
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

_0001_1260

SFK-1260 63A Reduced Voltage Panel Mounted Straight Socket

Earth contact position 4h
Rated current(A) 63
Pole 3
Dimension(mm) a 107
b 100
c 86
d 78
e 6
f 55
g 12
g1 2
h 113
i 89
j 80
Cable nominal cross-section area(mm²) 10-16

Contact us
Current(A):  63A
Voltage(V):  110-130V~2P+E
Protection degree:  IP44

_0000_1261

SFK-1261 220–240V Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 63
Pole 3
Dimension(mm) a 107
b 100
c 86
d 78
e 6
f 55
g 12
g1 2
h 113
i 89
j 80
Cable nominal cross-section area(mm²) 10-16

Contact us
Current(A):  63A
Voltage(V):  220-240V~2P+E
Protection degree:  IP44

_0003_1248

SFK-1248 Large Cable Size Entry Panel-Mounted Straight Socket

Earth contact position 6h
Rated current(A) 63
Pole 4
Dimension(mm) a 107
b 100
c 86
d 78
e 6
f 55
g 12
g1 2
h 113
i 89
j 80
Cable nominal cross-section area(mm²) 10-16

Contact us
Current(A):  63A
Voltage(V):  380-415V~3P+E
Protection degree:  IP44

_0002_1252

SFK-1252 IP44 63A 6H Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 63
Pole 5
Dimension(mm) a 107
b 100
c 86
d 78
e 6
f 55
g 12
g1 2
h 113
i 89
j 80
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

_0009_217

SFK-217 / SFK-229 4H 2P+E Panel Mounted Straight Socket

Earth contact position 4h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 31.8 40.8
g 8 8
g1 2 2
h 79.6 107.7
i 45 58
j 54.8 66.3
k 71.7 95.5
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

_0008_218

SFK-218 / SFK-230 220–240V 6H Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 3
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 31.8 40.8
g 8 8
g1 2 2
h 79.6 107.7
i 45 58
j 54.8 66.3
k 71.7 95.5
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

_0007_222

SFK-222 / SFK-234 Three-Phase Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 4
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 32.2 40.8
g 8 8
g1 2 2
h 85.3 107.7
i 52 58
j 54.6 66.3
k 80.6 95.5
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

_0006_228

SFK-228 / SFK-240 3P+N+E Power Panel Mounted Straight Socket

Earth contact position 6h
Rated current(A) 16 32
Pole 5
Dimension(mm) a 75 75
b 75 75
c 60 60
d 60 60
e 5.5 5.5
f 32.2 40.8
g 8 8
g1 2 2
h 92.9 106
i 55 62
j 58.5 67.9
k 89 102
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 Third Generation High-end Pannel Mounted Straight socket suppliers and Third Generation High-end Pannel Mounted Straight socket factory, we are mainly engaged in wholesale Third Generation High-end Pannel Mounted Straight socket, 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

Choosing a Panel-Mounted Straight Socket: 3 Pin vs 4 Pin vs 5 Pin, IP44 vs IP67, and What "Wide Voltage" Really Means

A panel-mounted socket is often the "front door" of an electrical enclosure. If it's underspecified, you'll see heat, loose terminations, water ingress, and field repairs that cost more than the connector ever did. When engineers search for a 3 Pin Industrial Socket, 4 Pin Industrial Socket, or Three-phase Industrial Socket, they're usually trying to confirm one thing: will this panel interface match the supply and survive the environment? Here's a selection framework that works well for OEM panels and industrial distribution boxes.

Pin count is a wiring decision, not a naming preferencePanel-Mounted Straight Socket: 3 Pin vs 4 Pin vs 5 Pin

The fastest way to avoid misorders is to tie "pin count" to what conductors the equipment needs.

  • 3 Pin Industrial Socket (2P+E): single‑phase + earth
  • Common on 220–240V auxiliary circuits, tools, and general equipment feeds.
  • 4 Pin Industrial Socket (3P+E): three‑phase + earth (no neutral)
  • Often used when loads are purely three‑phase motors without a neutral requirement.
  • 5 Pin (3P+N+E): three‑phase + neutral + earth
  • Preferred when neutral is required for mixed loads, control power, or future flexibility.

If your panel may later power devices that need a neutral, choosing 5‑pin early can reduce retrofit work.

"Three-phase Industrial Socket" — confirm the system before you pick

Three‑phase isn't one universal setup. Confirm:

  • Voltage range at the panel (e.g., 220–380V or 240–415V systems)
  • Whether neutral is present/required (drives the 4‑pin vs 5‑pin decision)
  • The current rating and duty cycle (continuous load vs intermittent)

This is why wide‑voltage, high‑current panel sockets are popular on mixed sites and export-oriented equipment.

IP44 vs IP67: choose based on exposure, not optimism Panel-Mounted Straight Socket IP44 VS IP67

For panel interfaces, environmental protection is typically the difference between "works for years" and "fails after one season."

  • IP44 fits indoor cabinets and sheltered installations with occasional splashes.
  • IP67 fits outdoor panels, dusty plants, washdown zones, ports, and mining environments where sealing is non‑negotiable.

If maintenance teams regularly wipe down equipment or panels face wind-driven rain, IP67 reduces corrosion risk and intermittent faults.

Wide voltage compatibility: why it helps OEMs and export projects

A "wide voltage" panel socket can simplify BOM management when:

  • The same machine ships to multiple regions
  • Sites have both 380V-class and 415V-class supplies
  • Contractors want fewer SKUs for temporary power distribution

It's not a substitute for correct protection devices, but it does reduce connector mismatch across mixed deployments.

Don't ignore cable cross-section and panel cutout planning

Two practical checks save time during assembly:

  • Cable nominal cross-section area: match the terminal design to your conductor size to avoid crowded terminations and hot spots.
  • Panel dimensions / cutouts: validate early so the socket seats correctly and maintains sealing performance.

This matters especially for higher-current builds where conductor stiffness and bend radius fight you inside the enclosure.

Selecting the right panel interface comes down to five checkpoints: phase system, pin count (3/4/5), current rating, IP protection, and installation fit. A Third Generation High-end Pannel Mounted Straight socket lineup that covers both IP44 nominal-voltage models and IP67 wide‑voltage high‑current options gives panel builders a clean way to standardize—while supporting everything from a 3 Pin Industrial Socket to a Three-phase Industrial Socket with 4 Pin Industrial Socket configurations where neutral isn't needed.