Description
HMI Brass Cable Gland 100mm (4”) – Single & Double Compression
The HMI Brass Cable Gland 100mm (4”) is a large-size industrial cable-entry gland available in two HMI configurations: SC100 Single Compression and DC100 Double Compression.
HMI’s current manufacturer information identifies SC100 as 100mm (4″) in its Single Compression range and DC100 as 100mm (4″) in its Double Compression range. Both ranges are specified with nickel-plated brass construction and BSC (British Standard Conduit) entry thread. HMI describes its Single Compression range as suitable for armoured and unarmoured cables, while its Double Compression range is intended for armoured cables.
The 100mm (4″) designation identifies the HMI gland size. It should not automatically be interpreted as the cable’s actual outside diameter or as meaning that every 100mm-diameter cable will fit this gland.
For large industrial cables, always verify the complete cable dimensions and applicable manufacturer selection data before ordering.
Our What Size Cable Gland Do I Need for My Project? guide explains why cable OD is a key selection parameter rather than relying only on conductor size.
HMI 100mm Single Compression Cable Gland – SC100
The HMI SC100 100mm (4″) Single Compression Cable Gland is a nickel-plated brass cable gland intended for compatible indoor or outdoor cable-entry applications.
HMI specifies its Single Compression range for armoured and unarmoured cables, with the gland’s function described as gripping the outer sheath of the cable.
SC100 Specifications
| Specification | Details |
| Brand | HMI |
| Product Type | Single Compression Cable Gland |
| Model / Code | SC100 |
| Gland Size | 100mm (4”) |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC – British Standard Conduit |
| Cable Type | Armoured / Unarmoured |
| Application | Indoor / Outdoor |
| Main Function | Grips outer cable sheath |
| Accessories | Earth Tag, Shroud available on request |
These specifications are based on HMI’s current Single Compression Cable Gland range. HMI lists SC100 – 100MM (4″) and identifies nickel-plated brass, BSC entry thread and armoured/unarmoured cable applications.
When Should You Choose SC100?
Choose SC100 when the installation specification calls for a Single Compression gland and the cable dimensions and construction are compatible with the applicable HMI selection data.
It is especially important with large cables not to select the gland merely because the cable has been described by a particular conductor size.
Thunderbolt’s Cable Gland Supplier India Size Guide explains how cable OD, cable construction, thread and gland type should be considered during selection.
HMI 100mm Double Compression Cable Gland – DC100
The HMI DC100 100mm (4″) Double Compression Cable Gland is a nickel-plated brass gland designed for armoured cable applications.
HMI describes its Double Compression design as sealing/gripping the inner and outer sheath, while the cone and ring clamp the cable armour.
DC100 Specifications
| Specification | Details |
| Brand | HMI |
| Product Type | Double Compression Cable Gland |
| Model / Code | DC100 |
| Gland Size | 100mm (4”) |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC – British Standard Conduit |
| Cable Type | Armoured |
| Application | Indoor / Outdoor |
| Main Function | Seals/grips inner & outer sheath |
| Armour Clamping | Cone & Ring |
| Accessories | Earth Tag, Shroud, Stop Plug, Reducer / Adaptor available on request |
HMI’s current Double Compression page lists DC100 – 100MM (4″) and specifies the inner/outer sheath sealing and cone-and-ring armour-clamping arrangement.
HMI 100mm Single Compression vs Double Compression
Single Compression – SC100
| Feature | HMI SC100 |
| Gland Size | 100mm (4”) |
| Product Code | SC100 |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC |
| Cable Type | Armoured / Unarmoured |
| Compression Type | Single Compression |
| Primary Function | Grips outer sheath |
| Armour Clamping | Not the defining function |
| Application | Indoor / Outdoor |
| Accessories | Earth Tag, Shroud available on request |
Double Compression – DC100
| Feature | HMI DC100 |
| Gland Size | 100mm (4”) |
| Product Code | DC100 |
| Material | Nickel-Plated Brass |
| Entry Thread | BSC |
| Cable Type | Armoured |
| Compression Type | Double Compression |
| Primary Function | Seals inner & outer sheath |
| Armour Clamping | Cone & Ring |
| Application | Indoor / Outdoor |
| Accessories | Earth Tag, Shroud, Stop Plug, Reducer / Adaptor available on request |
The two products have the same 100mm (4″) nominal gland size, but they are not interchangeable simply because of their size. HMI specifies different cable applications and functions for the Single and Double Compression versions.
For a detailed explanation, read our Armoured vs Unarmoured Cable Glands guide.
How to Select the Correct HMI 100mm Cable Gland
Large cable glands require particularly careful selection because the nominal gland size alone does not establish cable compatibility.
1. Check the Cable Outside Diameter
Start with the actual outside diameter of the complete cable.
You can obtain this from:
- Cable manufacturer’s datasheet
- Cable supplier
- Project technical specification
- Physical measurement of the cable
Thunderbolt’s cable-gland sizing guide specifically explains that gland selection should be based primarily on cable OD rather than conductor sq.mm alone.
2. Identify Cable Construction
Determine whether the cable is:
- Armoured
- Unarmoured
- Single-core
- Multicore
- Power cable
- Control cable
- Another specialised cable construction
This information helps determine whether the Single or Double Compression configuration is appropriate.
3. Select SC100 or DC100
SC100 is the HMI Single Compression option for armoured/unarmoured cable applications.
DC100 is the HMI Double Compression option specified for armoured cables, with inner/outer sheath sealing and armour clamping.
4. Check the Thread
HMI specifies BSC – British Standard Conduit as the entry thread for these Single and Double Compression ranges. Confirm that the equipment or enclosure entry matches the required thread before ordering.
5. Check Environmental Requirements
Consider:
- Indoor or outdoor installation
- Dust exposure
- Water exposure
- Moisture
- Mechanical movement
- Vibration
- Corrosive conditions
- Required enclosure protection
Our IP Rating on Cable Glands guide explains why the gland, cable, enclosure and installation must be considered together.
Applications of HMI Brass Cable Gland 100mm
The HMI 100mm cable gland can be considered for compatible large industrial cable-entry applications where the gland size, cable dimensions, cable construction and thread match the installation requirements.
Potential application areas include:
- Large electrical panels
- PCC panels
- MCC panels
- Power distribution equipment
- Switchgear
- Transformers
- Industrial machinery
- Manufacturing plants
- Power infrastructure
- Electrical substations
- EPC projects
- Heavy industrial installations
- Large cable-entry systems
- Industrial enclosures
- Cable termination installations
For armoured cable installations where Double Compression is specified, DC100 provides the HMI configuration with inner/outer sheath sealing and cone-and-ring armour clamping.
Why Choose Thunderbolt Electromech India Pvt. Ltd. for Cable Glands?
Thunderbolt Electromech India Pvt. Ltd. supplies industrial cable glands and electrical accessories for electrical contractors, engineers, panel builders, EPC companies, OEMs, maintenance teams and purchase departments.
For a large gland such as the HMI 100mm, technical identification is particularly important. Buyers should provide the gland size, SC/DC requirement, cable OD, cable construction, thread requirement and quantity when requesting a quotation.
Thunderbolt’s Cable Gland range includes HMI, Comet, Dowells, Diamond and MIC, giving industrial buyers options across different sizes and configurations. The company’s cable-gland buying resources also focus on cable OD, gland type, thread, environment and application.
Why buyers can choose Thunderbolt:
- HMI cable gland range
- Single Compression and Double Compression options
- Multiple cable gland sizes
- Industrial electrical product sourcing
- Support with cable-gland identification
- Bulk/project order support
- PAN-India supply
- Support for contractors and EPC companies
- Panel-builder and OEM procurement support
- Multiple electrical cable-accessory categories
For technical enquiries, provide the cable datasheet or complete cable information whenever possible. This reduces the risk of selecting a gland based only on its nominal size.
Frequently Asked Questions – HMI Brass Cable Gland 100mm
I searched the available web results for questions around 100mm cable glands, large cable glands, Single Compression, Double Compression, cable OD and cable-gland sizing. I also specifically checked Reddit, Medium and Tumblr searches. There was no substantial platform-specific discussion about the HMI 100mm product, so the questions below are based on recurring buyer/search intent rather than pretending they came from those platforms.
1. What is an HMI 100mm cable gland?
An HMI 100mm cable gland is a large-size HMI cable-entry gland identified as 100mm (4″). HMI offers this size as SC100 Single Compression and DC100 Double Compression.
2. What is the difference between HMI SC100 and DC100?
SC100 is the Single Compression version and grips the outer cable sheath. DC100 is the Double Compression version specified for armoured cables; it seals/grips the inner and outer sheath and uses a cone-and-ring arrangement to clamp the armour.
3. Is HMI 100mm cable gland suitable for armoured cable?
Yes. HMI specifies its Single Compression range, including SC100, for armoured and unarmoured cables. HMI specifies DC100 in its Double Compression range for armoured cables.
4. Does a 100mm cable gland fit a 100mm diameter cable?
Not necessarily. The 100mm designation identifies the HMI gland size. It should not automatically be interpreted as the cable’s acceptable outside diameter.
Always check the applicable HMI dimensional/selection information and the actual cable OD before ordering.
5. How do I select a 100mm cable gland?
Check:
- Cable outside diameter
- Cable construction
- Armoured/unarmoured status
- Single or Double Compression requirement
- Equipment/enclosure entry
- Thread requirement
- Environmental conditions
- Required sealing/protection specification
Our Cable Gland Supplier India pillar guide covers these selection factors in detail.
6. What thread does the HMI 100mm cable gland use?
HMI specifies BSC (British Standard Conduit) entry thread for its Single Compression and Double Compression cable-gland ranges.
7. What material is HMI 100mm cable gland made from?
HMI specifies nickel-plated brass for both the Single Compression and Double Compression ranges.
8. Which is better: SC100 or DC100?
Neither is universally better. The correct choice depends on the cable construction and project specification.
- Choose the HMI Single Compression configuration when SC100 is specified and compatible.
- Choose DC100 when the armoured-cable installation requires HMI’s Double Compression configuration.
9. Can HMI 100mm cable glands be used outdoors?
HMI specifies its Single Compression and Double Compression cable-gland ranges for indoor or outdoor applications. The complete installation should still be evaluated against the required environmental and sealing conditions.
10. What accessories are available for HMI SC100?
HMI lists Earth Tag and Shroud as accessories available on request for its Single Compression cable-gland range.
11. What accessories are available for HMI DC100?
HMI lists Earth Tag, Shroud, Stop Plug and Reducer/Adaptor as accessories available on request for its Double Compression range.
12. Should I select the HMI 100mm gland based only on cable sq.mm?
No. Cable conductor size alone is not sufficient. Cable construction and actual outside diameter should also be checked. Thunderbolt’s sizing guide specifically recommends using cable OD as a major selection parameter.
13. Is a Double Compression gland necessary for every armoured cable?
No. The correct gland type depends on the cable construction and project specification. HMI’s Double Compression design is specifically intended for armoured cables and incorporates inner/outer sheath sealing and armour clamping.
14. How do I know whether the 100mm HMI gland will fit my cable?
Provide the complete cable outside diameter, cable construction, armour details, required thread and project gland specification. These details should be checked against the applicable HMI selection information rather than relying on the 100mm product name alone.
15. Can Thunderbolt supply HMI 100mm cable glands in bulk?
For project and bulk requirements, contact Thunderbolt with the required SC100/DC100 configuration, quantity and cable details so availability and suitability can be checked.
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