Description
HMI Brass Cable Gland 75mm (3”) – Single & Double Compression
The HMI Brass Cable Gland 75mm (3”) is a nickel-plated brass cable-entry solution available in Single Compression SC075 and Double Compression DC075 configurations. HMI’s current manufacturer range identifies SC075 and DC075 as the 75mm (3″) models and specifies BSC (British Standard Conduit) entry thread.
The correct version should be selected according to the cable’s construction and the requirements of the installation. The SC075 Single Compression version is specified for armoured or unarmoured cables and grips the outer sheath. The DC075 Double Compression version is specified for armoured cables and seals/grips the inner and outer sheath while its cone and ring clamp the armour.
The 75mm (3″) designation is the nominal gland size and should not automatically be treated as the cable’s acceptable outside diameter. Before ordering, compare the actual cable OD with the manufacturer’s applicable dimensions and confirm the required thread, cable construction and compression arrangement.
For a detailed selection process, read Thunderbolt Electromech’s Cable Gland Supplier India: 15 Expert Tips to Choose the Right Cable Gland.
HMI SC075 75mm (3”) Single Compression Cable Gland
The HMI SC075 is the Single Compression configuration of the 75mm HMI Cable Gland.
According to HMI, the Single Compression range is suitable for armoured and unarmoured cables. Its function is to grip the outer sheath of the cable. The gland is manufactured from nickel-plated brass and uses a BSC entry thread. HMI also lists Earth Tag and Shroud as accessories available on request.
SC075 Key Features
- Model: SC075
- Nominal size: 75mm (3″)
- Material: Nickel-plated brass
- Entry thread: BSC
- Cable type: Armoured / unarmoured, subject to correct selection
- Function: Grips the outer cable sheath
- Application: Indoor or outdoor cable-gland applications
- Accessories: Earth Tag and Shroud available on request
HMI DC075 75mm (3”) Double Compression Cable Gland
The HMI DC075 is the Double Compression version of the HMI 75mm Cable Gland.
HMI specifies its Double Compression range for armoured cables. The design seals and grips the inner and outer sheath, while the cone and ring clamp the armour. It is manufactured from nickel-plated brass and uses a BSC entry thread. HMI lists Earth Tag, Shroud, Stop Plug and Reducer/Adaptor as accessories available on request.
DC075 Key Features
- Model: DC075
- Nominal size: 75mm (3″)
- Material: Nickel-plated brass
- Entry thread: BSC
- Cable type: Armoured cable
- Function: Seals/grips inner and outer sheath
- Armour: Cone and ring clamp the armour
- Application: Indoor or outdoor cable-gland applications
- Accessories: Earth Tag, Shroud, Stop Plug, Reducer/Adaptor available on request
HMI 75mm Single Compression vs Double Compression
Single Compression – SC075
| Specification | HMI SC075 |
| Model | SC075 |
| Nominal gland size | 75mm (3″) |
| Material | Nickel-plated brass |
| Entry thread | BSC |
| Cable construction | Armoured / unarmoured |
| Main function | Grips outer cable sheath |
| Armour clamping | Not the primary function |
| Application | Indoor / outdoor, subject to installation requirements |
| Accessories | Earth Tag, Shroud available on request |
Double Compression – DC075
| Specification | HMI DC075 |
| Model | DC075 |
| Nominal gland size | 75mm (3″) |
| Material | Nickel-plated brass |
| Entry thread | BSC |
| Cable construction | Armoured |
| Main function | Seals/grips inner & outer sheath |
| Armour clamping | Cone & ring clamp armour |
| Application | Indoor / outdoor, subject to installation requirements |
| Accessories | Earth Tag, Shroud, Stop Plug, Reducer/Adaptor available on request |
The manufacturer specifications for SC075 and DC075 support these distinctions.
Important sizing note: A 75mm gland does not automatically mean it accepts a 75mm cable OD. Select the gland using the actual cable OD and the applicable manufacturer dimensions. Thunderbolt’s own cable-gland guidance also emphasizes cable OD as an important selection parameter.
How to Select the Correct HMI 75mm Cable Gland
1. Check the Cable Outside Diameter
The first step is to identify the complete cable OD. Use the cable manufacturer’s datasheet or measure the cable where appropriate.
Do not select the gland only from the conductor size in sq.mm.
For additional guidance, see:
What Size Cable Gland Do I Need for My Project?
2. Identify Armoured or Unarmoured Construction
Determine whether the cable is armoured or unarmoured before choosing between the two configurations.
HMI specifies the Single Compression range for armoured/unarmoured cables, whereas the Double Compression range is specified for armoured cables.
Read our detailed cluster article:
Armoured vs Unarmoured Cable Glands: Which One Do You Actually Need?
- Verify the Thread
HMI specifies BSC (British Standard Conduit) as the entry thread for these cable-gland ranges. Confirm that the gland thread matches the enclosure or equipment entry before purchasing.
4. Consider the Installation Environment
Consider whether the gland will be installed indoors or outdoors and whether the application involves moisture, dust, chemicals, UV exposure, vibration or other environmental factors.
For related guidance, read:
What Is IP Rating on Cable Glands and Why Does It Matter?
Applications
The HMI Brass Cable Gland 75mm can be considered for suitable industrial cable-entry applications where the SC075 or DC075 configuration, cable dimensions, thread and installation requirements match.
Typical applications may include:
- Electrical control panels
- Industrial electrical enclosures
- Power distribution equipment
- Junction boxes
- Control cabinets
- Industrial machinery
- Manufacturing plants
- Electrical equipment
- Armoured cable installations
- Infrastructure projects
- OEM equipment
- Industrial cable-entry systems
The final selection should always be based on the actual cable construction, cable OD, applicable gland dimensions and project requirements.
Why Choose Thunderbolt Electromech India Pvt. Ltd. for Cable Glands?
Thunderbolt Electromech India Pvt. Ltd. supplies industrial electrical products and cable-management solutions for electrical contractors, EPC companies, OEMs, panel manufacturers, industries, maintenance teams and procurement departments.
For cable glands, correct product selection is more important than simply matching a nominal size. Buyers need to consider cable OD, cable construction, Single/Double Compression, thread and installation environment.
Thunderbolt provides access to a broader range of cable-gland products, including HMI and other industrial cable-gland options.
Why customers can choose Thunderbolt:
- HMI Cable Gland availability
- Single and Double Compression options
- Multiple cable-gland sizes
- Industrial electrical product range
- Support for project and bulk requirements
- PAN-India supply
- Assistance with product selection
- Suitable for contractors and industrial procurement
- Cable-gland technical content and buying guides
- Multiple cable-management products available
Explore the complete Cable Gland category for related products and technical guides.
For project-level selection, use our Cable Gland Supplier India pillar guide.
Frequently Asked Questions
1. What is an HMI 75mm Cable Gland?
The HMI 75mm Cable Gland is available in SC075 Single Compression and DC075 Double Compression configurations. HMI identifies both as 75mm (3″) models. The glands are specified in nickel-plated brass with BSC entry thread.
2. What is the difference between SC075 and DC075?
SC075 is Single Compression and grips the outer cable sheath. DC075 is Double Compression, specified for armoured cables, and seals/grips the inner and outer sheath while the cone and ring clamp the armour.
3. Does a 75mm Cable Gland fit a 75mm diameter cable?
Not necessarily. 75mm is the nominal gland size, and it should not automatically be interpreted as the acceptable cable OD. The actual cable OD must be checked against the applicable manufacturer specifications.
4. How do I choose the correct 75mm Cable Gland?
Check the actual cable OD, cable construction, armoured/unarmoured status, required compression type, mounting thread and installation environment. The nominal 75mm size alone is not enough.
5. Is HMI SC075 suitable for armoured cable?
HMI states that its Single Compression Cable Gland range is suitable for armoured and unarmoured cables. The specific cable and installation should still be checked against the applicable product dimensions.
6. Is HMI DC075 suitable for armoured cable?
Yes. HMI specifies its Double Compression Cable Gland range for armoured cables, with the cone and ring used to clamp the armour.
7. What thread does the HMI 75mm Cable Gland have?
The HMI Single and Double Compression ranges specify a BSC (British Standard Conduit) entry thread.
8. Is cable gland size the same as cable size in sq.mm?
No. Cable size in sq.mm generally refers to conductor cross-sectional area, while cable-gland selection requires consideration of the complete cable OD and construction. The two measurements should not be treated as interchangeable.
9. What material is the HMI 75mm Cable Gland made from?
HMI specifies nickel-plated brass for both the Single Compression and Double Compression ranges.
10. What accessories are available for HMI 75mm Cable Glands?
For the Single Compression range, HMI lists Earth Tag and Shroud available on request. For Double Compression, HMI lists Earth Tag, Shroud, Stop Plug and Reducer/Adaptor available on request.
11. Can I use the same 75mm gland for every cable?
No. The gland must be compatible with the cable’s dimensions, construction and the installation requirements. A nominal 75mm designation alone does not establish compatibility.
12. Why is cable OD important when buying a Cable Gland?
The gland has to grip/seal the cable correctly. Therefore, the cable’s actual external dimensions are important when determining whether a particular gland is suitable. Thunderbolt’s existing sizing guide also emphasizes checking the cable OD rather than relying only on conductor size.
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