7 Pin Heavy Duty Rectangular HDC Industrial Connectors
- Part:
- SO-HMK-003/4-MC
- Product Certification:
- UL CUL CE ROHS DMT
- Order No.:
- 09140073001
- Packaging Details:
- Standard Export Cartons
- Delivery Time:
- Within 7 Days
- Payment Terms:
- L/C, T/T, Western Union, Paypal
- Supply Ability:
- 100000 pcs per month
Description
Eliminating Interconnection Failures in Harsh Environments
Industrial control cabinets frequently experience contact resistance spikes and signal loss from severe vibration and moisture exposure. Standard industrial plugs degrade rapidly under mechanical stress. Deploying a rugged 7 pin heavy duty connector prevents unplanned downtime across automated production lines.
SMICO provides industrial-grade connectivity engineered for severe operating conditions. Combining power lines and control circuits into an integrated 7 pin connector reduces installation space while maintaining complete galvanic isolation.
Engineering Advantages of the SMICO HMK Series
The SMICO HMK-003+4 insert isolates high-amperage lines from sensitive control channels. Utilizing a heavy duty connector 7 pin assembly delivers specific operational benefits:
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Hybrid Contact Density: Houses three 40A power terminals alongside four 10A signal paths within a single modular frame.
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Reliable Termination: Silver-plated copper alloy crimp contacts ensure low contact resistance under continuous thermal cycles.
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Shielded Integrity: Die-cast aluminum alloy enclosures shield each hdc 7 pin interface against electromagnetic interference.
Enclosure Durability and Secure Mating
Severe manufacturing settings require robust mechanical safeguards:
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Double-lever stainless steel latches lock the 7 pin hdc securely against continuous cyclic vibration.
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NBR sealing gaskets deliver IP65 ingress protection against water jets, lubricants, and particulate contamination.
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Powder-coated surfaces allow the Heavy Duty Rectangular Connector to withstand aggressive chemical washdowns without galvanic corrosion.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Code | SMICO HMK-003+4 |
| Pin Configuration | 3 Power + 4 Signal + Ground |
| Rated Current | 40A (Power) / 10A (Signal) |
| Rated Voltage | 690V (Power) / 250V (Signal) |
| Ingress Rating | IP65 (Coupled) |
| Contact Material | Copper Alloy with Silver Plating |
Direct Integration and Sourcing
Selecting the proper connector 7 pin configuration simplifies wire harnessing and accelerates field maintenance. SMICO provides factory-tested inserts, hoods, and bases ready for rapid deployment. Explore full technical specifications and request samples directly via the SMICO HMK-003+4 Product Page.

Specification
| Inserts | |
| Number of contacts | 3/4 |
| Electrical dataacc. to EN 61 984 | |
| Power contacts | |
| ---Rated current | 40A |
| ---Rated voltage | 830V |
| ---Rated impulse voltage | 8kV |
| ---Pollution degree | 3 |
| Signal contacts | |
| ---Rated current | 10A |
| ---Rated voltage | 830V |
| ---Rated impulse voltage | 8kV |
| ---Pollution degree | 3 |
| Rated voltage acc. to UL/CSA | 600V |
| Insulation resistance | ≥1010Ω |
| Material | polycarbonate |
| Limiting temperatures | -40℃...+125℃ |
| Flammability acc. to UL 94 | V0 |
| Mechanical working life -mating cycles | ≥500 |
| Contacts | |
| Material | copper alloy |
| Surface | hard-silver plated |
| hard-gold plated | |
| Contact resistance | |
| ---Power contacts | ≤0.3mΩ |
| ---Signal contacts | ≤3mΩ |
| Crimp terminal | |
| ---mm2 | |
| ------Power contacts | 1.5-6mm2 |
| ------Signal contacts | 0.14-2.5mm2 |
| ---AWG | |
| ------Power contacts | 16-10 |
| ------Signal contacts | 26-14 |
| Max. insulation diameter | |
| ---Signal contacts | 5mm |
Advantage
SMICO heavy duty connector
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Compatible with other brands
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accept OEM /ODM
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accept customized colour : like blue ,black
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The popular parts in stock , delivery time fast
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Export Packing : Packing for each items respectively or packing for full one set
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Without MOQ except the customized type
Location
SMICO Heavy duty connectors Applications :
- Machinery
- Automation
- Robotics
- Rail
- Energy Distribution
- Renewable Energy
- Construction Machinery
- Professional Light and Sound

Packaging

Videos
Downloads
| HMK 003 plus 4 Heavy Duty Electrical Connector 7 Pin With Copper Alloy Crimp Contacts 09140073001 HMK-003/4-MC | Download |
FAQs
01.How many employees are there in your factory?
We have more than 130 employees, including the entire production chain.
02.Whether to provide technical documents?
Sure. If there is anything unclear about the product, we will provide you with as detailed technical documents as possible.
03.Does this insert can fit with my frame?
Our module insert can fit with Harting,ILME,Weidmuller,TE and other brand.
04.How to order?
Please email us your purchase order and we will send you a quotation and a proforma invoice.

