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Wholesale Mechanical Socket

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Mechanical Socket

Mechanical interlocking sockets are built for sites where power must be connected and disconnected safely under real industrial conditions. This category covers solutions for steel smelting, petrochemical plants, power generation and distribution, electronics facilities, railways, construction and mining operations, airports, ports and docks, as well as commercial buildings such as shopping malls and hotels. By using a mechanical interlock, the plug and switch work as one system—helping prevent unsafe operations and reducing the risk of accidental energizing during maintenance.

Our range includes broad-range voltage mechanical interlocking sockets, standard and multifunction models, plus waterproof/weatherproof industrial mechanical interlock switch sockets in 3–5 pole configurations. Designed for demanding environments, they support stable operation in dust, moisture, and frequent plug-in cycles, and they are suitable as replacement or matching parts for imported equipment power supplies and connectors. We also provide customized configurations based on your drawings, parameters, or application requirements, making it easier to fit your installation standards and on-site wiring needs.

1

SFK-7273 16A Mechanical interlocking Socket

Amps 16A
Number of J poles 3 4 5
Sizes (mm²) a 170 170 170
b 118 118 118
c 134 137 141
d 136 136 136
e 104 104 104
f 6.1 6.1 6.1
g 6 6 6
M 25 25 25
Cross-sectional area of conductor (mm²) 1.5-2.5

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110V

50a.60Hz

230V

50a.60Hz

400V

50a.60Hz

500V

50a.60Hz

>50-500V

100-300Hz

>50-500V

a.300-500Hz

3,4,5

4,4,4

3,4,5

6,9,9

3,4,5

9,6,6

3,4,5

7,7,7

3,4,5

10,10,10

3,4,5

2,2,2

1

SFK-7274 16A Broad-Range Voltage Mechanical interlocking Socket

Amps 16A
Number of J poles 3 4 5
Sizes (mm²) a 170 170 170
b 118 118 118
c 134 137 141
d 136 136 136
e 104 104 104
f 6.1 6.1 6.1
g 6 6 6
M 25 25 25
Cross-sectional area of conductor (mm²) 1.5-2.5

Contact us

110V

50a.60Hz

230V

50a.60Hz

400V

50a.60Hz

500V

50a.60Hz

>50-500V

100-300Hz

>50-500V

a.300-500Hz

3,4,5

4,4,4

3,4,5

6,9,9

3,4,5

9,6,6

3,4,5

7,7,7

3,4,5

10,10,10

3,4,5

2,2,2

1

SFK-7275 16A Multifunctional Mechanical interlocking Socket

Amps 16A
Number of J poles 3 4 5
Sizes (mm²) a 170 170 170
b 118 118 118
c 134 137 141
d 136 136 136
e 104 104 104
f 6.1 6.1 6.1
g 6 6 6
M 25 25 25
Cross-sectional area of conductor (mm²) 1.5-2.5

Contact us

110V

50a.60Hz

230V

50a.60Hz

400V

50a.60Hz

500V

50a.60Hz

>50-500V

100-300Hz

>50-500V

a.300-500Hz

3,4,5

4,4,4

3,4,5

6,9,9

3,4,5

9,6,6

3,4,5

7,7,7

3,4,5

10,10,10

3,4,5

2,2,2

1

SFK-7276 Weatherproof 3-5 Pole Mechanical interlocking Socket

Amps 16A
Number of J poles 3 4 5
Sizes (mm²) a 170 170 170
b 118 118 118
c 134 137 141
d 136 136 136
e 104 104 104
f 6.1 6.1 6.1
g 6 6 6
M 25 25 25
Cross-sectional area of conductor (mm²) 1.5-2.5

Contact us

110V

50a.60Hz

230V

50a.60Hz

400V

50a.60Hz

500V

50a.60Hz

>50-500V

100-300Hz

>50-500V

a.300-500Hz

3,4,5

4,4,4

3,4,5

6,9,9

3,4,5

9,6,6

3,4,5

7,7,7

3,4,5

10,10,10

3,4,5

2,2,2

11

SF-1131 Waterproof Industrial Electric Mechanical Interlock Switch Socket

IP67 16A Current
Pole a b c d e f g h M&M*
3 225 118 144 208 101 6.3 8 252 2+25, 25/32
4 225 118 146 208 101 6.3 8 255 2+25, 25/32
5 225 118 147 208 101 6.3 8 259 2+25, 25/32
Conductor cross-sectional area (mm²) from 1.5 to 2.5
IP67 32A Current 
Pole a b c d e f g h M&M*
3 225 118 144 208 101 6.3 8 268 2+25, 25/32
4 225 118 146 208 101 6.3 8 268 2+25, 25/32
5 225 118 147 208 101 6.3 8 274 2+25, 25/32
Conductor cross-sectional area (mm²) from 4 to 6
IP67 63A Current
Pole a b c d e f g h M&M*
3 264 163 196 240 140 8.1 8 300 40, 25/32
4 264 163 196 240 140 8.1 8 300 40, 25/32
5 264 163 196 240 140 8.1 8 300 40, 25/32
Conductor cross-sectional area (mm²) from 10 to16
IP67 125A Current 
Pole a b c d e f g h M&M*
3 285 171 224 250 150 10 10 335 50,50
4 285 171 224 250 150 10 10 335 50,50
5 285 171 224 250 150 10 10 335 50,50
Conductor cross-sectional area (mm²) from 4 to 6
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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 Mechanical interlocking Socket suppliers and Mechanical interlocking Socket factory, we are mainly engaged in wholesale Mechanical interlocking 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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