Description
Dowells Brass Cable Gland 100mm (4″) – Single/Double Compression
The Dowells Brass Cable Gland 100mm (4″) is a large-size brass cable-entry solution for compatible electrical, industrial and power-cable installations. It is available in Single Compression and Double Compression configurations, with the appropriate version selected according to cable construction, actual cable outside diameter and installation requirements.
The most important point when purchasing a 100mm cable gland is that 100mm (4″) is a nominal gland designation and should not automatically be treated as the cable’s outside diameter.
According to Dowells’ published selection chart, DGP10019 Single Compression is suitable for cables measuring 87.1–100 mm in diameter.
For the Double Compression armoured range, Dowells’ 2026 price list identifies DC-4″ / DGP10054 for 86.1–100.0 mm overall cable diameter, with a 4″ nipple.
For a broader selection methodology, see our Cable Gland Supplier India: 15 Expert Tips to Choose the Right Cable Gland for Industrial Projects.
Dowells 100mm (4″) Single Compression Cable Gland
The Dowells 100mm (4″) Single Compression Cable Gland is identified by product code DGP10019.
Dowells’ published catalogue specifies DGP10019 for a 87.1–100 mm cable diameter. The same catalogue provides dimensional information for the gland, including its nominal 100mm size.
This makes actual cable OD an important purchasing check. A cable should not be selected solely because it is described by a nominal size or conductor cross-sectional area.
Single Compression Specifications
| Specification | Details |
| Brand | Dowells |
| Product Type | Brass Cable Gland |
| Compression | Single Compression |
| Nominal Size | 100mm (4″) |
| Dowells Product Code | DGP10019 |
| Suitable Cable Diameter | 87.1–100 mm |
| Material | Brass |
| Finish | Bright Nickel Plated |
| Selection Basis | Actual cable OD + construction + thread + application |
| Application | Compatible industrial cable-entry installations |
The 87.1–100 mm figure is the manufacturer-published selection range for DGP10019.
Important sizing point
If the customer’s cable measures more than 100 mm, DGP10019 should not simply be selected because the gland is called “100mm.” Dowells’ catalogue provides larger Single Compression sizes, including DGP10020, which is specified for 100.1–108 mm cable diameter.
This is why actual cable measurement is more useful than selecting a gland from the nominal number alone.
For more information, read What Size Cable Gland Do I Need for My Project?.
Dowells 100mm (4″) Double Compression Cable Gland
The Dowells 100mm (4″) Double Compression Cable Gland should be specified separately from the Single Compression DGP10019.
Dowells’ 2026 price list identifies the DC-4″ / DGP10054 under its Double Compression Type Medium Duty Armoured Brass Cable Glands. The listed suitable overall cable diameter is 86.1–100.0 mm, and the listed nipple is 4″.
This is particularly important for armoured-cable applications because the cable construction and armour need to be considered when choosing the appropriate Double Compression gland.
Double Compression Specifications
| Specification | Details |
| Brand | Dowells |
| Product Type | Brass Cable Gland |
| Compression | Double Compression |
| Nominal Size | 100mm (4″) |
| Catalogue No. | DC-4″ |
| Dowells Product Code | DGP10054 |
| Suitable Overall Cable Diameter | 86.1–100.0 mm |
| Nipple | 4″ |
| Cable Type | Armoured cable |
| Material | Brass |
| Selection Basis | Cable OD + armour + construction + thread + application |
Dowells’ 2026 price list provides these specifications for DGP10054.
Single Compression vs Double Compression
100mm Single Compression – DGP10019
| Feature | Specification |
| Nominal Size | 100mm (4″) |
| Product Code | DGP10019 |
| Suitable Cable Diameter | 87.1–100 mm |
| Compression Type | Single Compression |
| Material | Brass |
| Finish | Bright Nickel Plated |
| Cable Selection | Actual cable diameter |
| Selection Check | Cable OD + construction + thread + application |
100mm Double Compression – DC-4″ / DGP10054
| Feature | Specification |
| Nominal Size | 100mm (4″) |
| Catalogue No. | DC-4″ |
| Product Code | DGP10054 |
| Suitable Overall Cable Diameter | 86.1–100.0 mm |
| Compression Type | Double Compression |
| Cable Type | Armoured |
| Nipple | 4″ |
| Material | Brass |
| Selection Check | Cable OD + armour + construction + thread + application |
Key Difference
The two products should not be treated as interchangeable simply because both are described as 100mm (4″).
- DGP10019 → Single Compression → 87.1–100 mm cable diameter.
- DGP10054 → Double Compression → armoured cable → 86.1–100 mm overall cable diameter.
Their selection should be based on the actual cable and installation requirements.
How to Select the Correct Dowells 100mm Cable Gland
1. Measure the finished cable OD
The first and most important step is to establish the actual outside diameter of the complete cable.
For the Dowells 100mm Single Compression gland:
DGP10019 → 87.1–100 mm
For the Dowells 100mm Double Compression armoured gland:
DGP10054 → 86.1–100.0 mm
Do not assume that a 100mm gland means the cable itself must measure exactly 100mm.
2. Check whether the cable is armoured
Cable construction determines which gland configuration is appropriate.
For armoured installations, a suitable Double Compression configuration may be required according to the project specification.
Read our detailed guide: Armoured vs Unarmoured Cable Glands: Which One Do You Actually Need?.
3. Confirm Single or Double Compression
Do not substitute Single Compression for Double Compression simply because both products carry the same nominal size.
The compression configuration should be selected according to:
- Cable construction
- Armour
- Installation specification
- Equipment requirements
- Project standards
4. Verify the thread and enclosure entry
The gland must physically and mechanically correspond with the panel, junction box, switchgear, enclosure or other equipment entry.
For a 4″ requirement, confirm the actual entry/thread specification before ordering.
5. Consider the installation environment
Outdoor, wet, dusty, corrosive and other demanding environments may require specific sealing or ingress-protection characteristics.
See What Is IP Rating on Cable Glands and Why Does It Matter? for the selection factors.
Applications
The Dowells Brass Cable Gland 100mm (4″) can be considered for compatible large-cable-entry applications where the actual cable dimensions, gland configuration and equipment entry correspond with the applicable Dowells selection data.
Potential applications include:
- Large electrical control panels
- PCC and MCC panels
- Switchgear
- Distribution systems
- Power distribution equipment
- Industrial electrical enclosures
- Junction boxes
- Transformer-related installations
- Heavy industrial machinery
- Manufacturing plants
- Infrastructure projects
- EPC electrical projects
- Large power-cable installations
- Industrial cable-entry applications
- Maintenance and replacement projects
For a complete selection framework, use our Cable Gland Supplier India Guide.
Common Problems When Buying a 100mm Cable Gland
| Customer Problem | Common Reason | Correct Approach |
| 100mm gland doesn’t fit | Actual cable OD not checked | Measure the complete cable |
| Customer assumes 100mm = 100mm cable OD | Nominal size confused with cable OD | Check manufacturer range |
| Wrong compression type | Cable construction ignored | Confirm Single/Double requirement |
| Armoured cable gets wrong gland | Armour not considered | Select applicable armoured gland |
| Gland does not match panel | Entry/thread not checked | Verify enclosure entry |
| Customer selects by sq.mm | Conductor size used instead of cable OD | Check finished cable diameter |
| 100mm gland is too small | Cable OD exceeds range | Consider next applicable gland size |
Dowells’ catalogue demonstrates this clearly: the next Single Compression product, DGP10020, covers 100.1–108 mm, showing why adjacent gland sizes should be selected from the manufacturer’s actual dimensional range.
Why Choose Thunderbolt Electromech India Pvt. Ltd. for Cable Glands?
Thunderbolt Electromech India Pvt. Ltd. supplies industrial electrical and cable-management products for engineers, contractors, panel builders, industries and purchase departments.
Why choose Thunderbolt?
Dowells cable-gland sourcing
We can help customers identify the relevant Dowells size and configuration for their requirement.
Wide cable-gland range
Different nominal sizes and configurations are available for industrial cable-entry requirements.
Single & Double Compression options
Customers can enquire for the configuration appropriate to their cable construction and project specification.
Bulk-order support
Suitable for contractors, EPC companies, panel builders, OEMs, industrial maintenance teams and procurement departments.
PAN-India supply
Thunderbolt supports industrial electrical-product requirements across India.
Selection assistance
Customers can provide their cable OD, cable construction, armour details, gland configuration, thread and quantity so the required product can be checked more accurately.
Information to provide when requesting a quotation
- Dowells brand
- 100mm / 4″ requirement
- Actual cable OD
- Armoured or unarmoured
- Single or Double Compression
- Required thread/entry
- Quantity
- Delivery location
Thunderbolt Electromech India Pvt. Ltd.
Shop No. 3538, Sitaram Bazar Road, Bazar Sirkiwalan, Chawri Bazar, Chandni Chowk, Delhi – 110006
Phone: +91-9911886655
Email: info@thunderboltelectromech.com
FAQs – Dowells Brass Cable Gland 100mm
1. What is a Dowells 100mm (4″) Cable Gland?
It is a large-size Dowells brass cable gland intended for compatible cable-entry installations. The Dowells Single Compression version is DGP10019, while the Double Compression armoured version is identified as DC-4″ / DGP10054 in the 2026 price list.
2. What cable diameter fits the Dowells 100mm Single Compression Cable Gland?
Dowells specifies DGP10019 for 87.1–100 mm cable diameter.
3. Does 100mm mean that the cable must have a 100mm outside diameter?
No. The 100mm (4″) designation is the nominal gland size. DGP10019 is specified for 87.1–100 mm cable diameter.
4. What is the Dowells product code for the 100mm Single Compression gland?
The product code is DGP10019. Dowells’ published selection chart specifies it for 87.1–100 mm cable diameter.
5. What is the Dowells 100mm Double Compression product code?
For the medium-duty armoured Double Compression range, the 2026 Dowells price list identifies DC-4″ / DGP10054 for 86.1–100.0 mm overall cable diameter.
6. What is the difference between 100mm Single and Double Compression?
They are different gland configurations. DGP10019 is the 100mm Single Compression gland, while DGP10054 is the DC-4″ Double Compression armoured configuration. Their selection ranges and application requirements should therefore be checked separately.
7. Is the Dowells 100mm Double Compression gland suitable for armoured cable?
Yes. The Dowells 2026 price list places DGP10054 / DC-4″ in its Double Compression Medium Duty Armoured Brass Cable Gland range.
8. Can I select a 100mm cable gland based on cable sq.mm?
It is better not to select the gland based on conductor cross-sectional area alone. The finished cable’s overall diameter and construction should be checked. Dowells provides cable-diameter ranges for its products.
9. What cable diameter fits the Dowells 100mm Double Compression gland?
The published 2026 Dowells price list gives 86.1–100.0 mm overall cable diameter for DGP10054 / DC-4″.
10. What happens if my cable is larger than 100mm?
Do not force it into the 100mm gland. Dowells’ Single Compression catalogue shows DGP10020 for 100.1–108 mm, demonstrating that a larger applicable gland size may be required when the cable OD exceeds the DGP10019 range.
11. Can the same 100mm gland be used for different cables?
Only when the cables meet the applicable manufacturer’s cable-diameter range and the required construction, thread and installation conditions. Identical conductor ratings do not necessarily mean identical cable outside diameters.
12. How should I choose between Single and Double Compression?
Start with the cable construction and project requirement. For armoured cables requiring a Double Compression arrangement, select the applicable Dowells Double Compression gland. For other applications, follow the relevant product specification.
13. What information should I give when ordering a Dowells 100mm cable gland?
Provide:
- Actual cable OD
- Cable construction
- Armoured/unarmoured
- Single/Double Compression
- Required thread/entry
- Quantity
- Application
- Delivery location
This makes it much easier to identify the appropriate product rather than relying only on “100mm cable gland.”
14. Where can I buy Dowells 100mm Cable Gland in India?
You can contact Thunderbolt Electromech India Pvt. Ltd. for Dowells cable-gland requirements, including the 100mm Single Compression DGP10019 and the appropriate Double Compression configuration.
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