Brass Bronze Square Earth Tape Clamps
Cable Glands India manufactures Brass and Bronze Square Earth Tape Clamps used to bond flat copper or aluminum earth tape to ground rods, structural steelwork, pipework, and equipment frames. These clamps are cast or machined with a square or rectangular saddle profile that matches standard earth tape cross sections, ensuring full surface contact between the tape and the clamp body. Electrical contractors, EPC firms, and utility maintenance teams specify square earth tape clamps wherever a flat conductor, rather than a round cable, must be mechanically and electrically bonded to a fixed point in the earthing network.
Price: US$ 12.50 per kilogram | Custom pricing available for bulk and OEM orders
Product Overview
Function of Square Earth Tape Clamps
A square earth tape clamp bonds flat copper earth tape, typically 25×3 mm or 25×6 mm cross section, to a ground rod, structural column, or equipment enclosure. The square saddle profile of the clamp body matches the rectangular tape cross section, giving full-face metal-to-metal contact across the entire clamp width rather than a point contact, which keeps joint resistance low and stable under fault current loading.
Brass Construction for General Purpose Bonding
Brass square tape clamps, typically CuZn39Pb3 or equivalent free-cutting brass, offer good conductivity and corrosion resistance at an economical price point, making them well suited to indoor, commercial, and general industrial earthing applications where extreme outdoor exposure is not a concern.
Bronze Construction for Severe Environments
Bronze square tape clamps, cast from C83600 or C95400 alloys, are specified where the connection will be buried, exposed to marine air, or installed in chemically aggressive industrial atmospheres, since bronze resists dezincification and long-term corrosion far better than standard brass.
Tape-to-Rod Clamp Variant
This variant combines a bored rod channel with a square tape saddle in a single casting, allowing a ground rod and an earth tape run to bond directly at one fitting without requiring a separate coupler or jumper cable.
Tape-to-Structure Clamp Variant
This variant uses a flat back face designed to bolt directly onto structural steel, switchgear frames, or cable tray, providing a standardised bonding point for earth tape runs across a facility.
Tape-to-Tape Splice Clamp
Where two lengths of earth tape must be joined or a tee-off connection is required, a tape-to-tape splice clamp uses a double saddle design to bond two or three tape runs at a single mechanical joint.
Bolt and Fastener Specification
Clamps are supplied with brass or stainless steel bolts sized to the clamp saddle, selected to avoid galvanic mismatch with the clamp body while providing the clamping force needed to maintain full-face tape contact over the life of the installation.
Key Features
- Square saddle profile for full-face contact with flat earth tape
- Available in brass (CuZn39Pb3) and bronze (C83600/C95400)
- Accepts standard 20×3, 25×3, 25×6 and 40×4 mm tape sizes
- Tape-to-rod, tape-to-structure, and tape-to-tape variants
- Compliant with IS 3043, BS 7430 and IEC 62561 earthing standards
- Corrosion-resistant construction for indoor and outdoor use
Contact Area and Resistance
The wide, flat saddle face of the square clamp maximises the contact area between tape and clamp, keeping joint resistance low and stable, which is important for maintaining the overall earth grid resistance value specified in the electrical design.
Corrosion Resistance in Buried and Outdoor Use
Bronze variants are specified for buried tape runs and coastal installations, while brass variants are typically reserved for indoor panels, switchrooms, and covered plant areas where exposure is limited.
Bolt Torque and Tape Protection
The clamp saddle is designed to distribute clamping force evenly across the tape width, avoiding the tape distortion or cutting that can occur with undersized or misapplied fasteners.
Tape Size Compatibility
Standard clamps are manufactured to fit the common earth tape sizes used in utility and industrial earthing designs, with custom saddle dimensions available for non-standard tape cross sections.
Multi-Directional Bonding
Tape-to-tape splice clamps allow tape runs to change direction or branch at a single fitting, reducing the number of bends and joints required in a complex earthing tape layout.
Maintenance-Free Long-Term Service
Correctly torqued bronze or brass tape clamps require no periodic maintenance beyond routine visual inspection during scheduled earth resistance testing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | Brass (CuZn39Pb3) / Bronze (C83600, C95400) |
| Tape Size Range | 20×3, 25×3, 25×6, 40×4 mm |
| Rod Diameter (tape-to-rod variant) | 1/2 inch, 5/8 inch, 3/4 inch |
| Fastener | Brass or stainless steel bolts |
| Contact Resistance | < 50 micro-ohms |
| Fault Current Rating | Up to 3,000 A (0.5 sec) |
| Operating Temperature | -40C to +100C |
| Electrical Conductivity (Brass) | 26-28% IACS |
| Electrical Conductivity (Bronze) | 12-15% IACS |
| Surface Finish | Natural / tin-plated |
Material Grade Reference
| Standard | Grade | Composition | Typical Use |
|---|---|---|---|
| ASTM B453 | C36000 | Free-cutting Brass | Indoor tape clamps |
| ASTM B584 | C83600 | Cu-Sn-Zn-Pb (Red Bronze) | General outdoor tape clamps |
| ASTM B148 | C95400 | Cu-Al-Fe (Aluminum Bronze) | Marine and buried installations |
| BS 2874 | CZ121 | Leaded Brass | UK / European supply |
| IS 319 | Type II Brass | Indian Standard Brass | Domestic utility projects |
International Equivalent Standards
| Region | Standard | Scope |
|---|---|---|
| India | IS 3043 | Code of practice for earthing |
| UK | BS 7430 | Code of practice for protective earthing |
| International | IEC 62561 | Lightning protection component testing |
| USA | UL 467 | Grounding and bonding equipment |
| Europe | BS EN 62561 | Earthing component compliance |
Product Types / Variants
| Type | Description | Typical Application |
|---|---|---|
| Tape-to-Rod Clamp | Square saddle plus rod bore | Ground rod to tape bonding |
| Tape-to-Structure Clamp | Flat back, bolt-on | Structural steel and frame bonding |
| Tape-to-Tape Splice Clamp | Double saddle design | Tape joints and tee-off connections |
| Brass Standard Clamp | Economical indoor grade | Panels, switchrooms, covered areas |
| Bronze Heavy-Duty Clamp | Corrosion-resistant grade | Buried, marine, outdoor installations |
Applications in Industry
Substation Earth Mat Bonding
Utilities use square tape clamps extensively to bond earth tape runs across substation earth mats to structural steel, equipment frames, and fence lines.
Industrial Plant Earthing
Factories and process plants use tape clamps to bond earth tape to structural steelwork, pipe racks, and static equipment as part of plant-wide bonding and earthing schemes.
Data Center and Telecom Earthing
Data centers and telecom exchanges use brass tape clamps on internal bonding networks to maintain a low-impedance reference plane for sensitive electronic equipment.
Commercial Building Earthing
Electrical contractors use tape clamps to bond earth tape to building steel, water pipes, and lightning protection down-conductors in commercial construction projects.
Renewable Energy Earthing Grids
Solar and wind installations use tape clamps to bond earth tape between array structures, inverter stations, and the main site earth grid.
Manufacturing Process
| Stage | Method | Quality Check |
|---|---|---|
| Alloy Verification | Spectroscopic analysis | Composition certificate |
| Casting / Forging | Sand casting or hot forging | Dimensional inspection |
| CNC Machining | Saddle profile and bore machining | Tape fit tolerance check |
| Thread Cutting | Bolt hole threading | Go/No-go gauge testing |
| Surface Finishing | Tumbling / tin plating (optional) | Coating thickness test |
| Final Inspection | CMM dimensional audit | Conductivity and clamp force test |
| Packing | Anti-corrosion wrap | Documentation check |
Quality Standards and Certifications
ISO 9001:2015 Quality Management, IS 3043 and BS 7430 design compliance, IEC 62561 component testing, UL 467 grounding equipment compliance, RoHS material compliance, and CE marking for European supply. Full material test certificates and dimensional reports are issued with every shipment.
Why Choose Cable Glands India
Dual Material Range
We offer both brass and bronze square tape clamps from a single source, allowing project engineers to specify the correct material grade for indoor or outdoor duty without switching suppliers.
Precision Saddle Machining
CNC-machined saddle profiles ensure consistent, full-face contact with standard tape sizes across every production batch.
Direct-Manufacturer Pricing
No distributor markup; volume pricing for utility and OEM frame orders. Price: US$ 12.50 per kilogram.
Global Compliance Documentation
Every order ships with IS 3043, BS 7430, and IEC 62561 conformity paperwork required for utility and EPC procurement approval.
Frequently Asked Questions
Q1: What is a square earth tape clamp used for?
It bonds flat copper earth tape to a ground rod, structural steel, or equipment frame, providing full-face metal contact for a low-resistance earthing connection.
Q2: What tape sizes are supported?
Standard clamps fit 20×3, 25×3, 25×6 and 40×4 mm tape sections, with custom saddle sizes available on request.
Q3: Should I choose brass or bronze?
Brass suits indoor and general commercial use, while bronze is recommended for buried, marine, or chemically aggressive outdoor environments.
Q4: Can two tape runs be joined with one clamp?
Yes, the tape-to-tape splice clamp variant uses a double saddle to join or tee-off two or three tape runs at one fitting.
Q5: What fasteners are used?
Clamps are supplied with brass or stainless steel bolts sized to match the saddle and avoid galvanic mismatch with the clamp body.
Q6: Are these suitable for buried installation?
Bronze variants are designed for direct burial and long-term outdoor exposure without periodic re-tightening.
Q7: What standards do these clamps meet?
Our square tape clamps are manufactured to meet IS 3043, BS 7430, and IEC 62561 earthing and lightning protection requirements.
Q8: Do you supply test certificates?
Yes, every batch includes material composition, dimensional, and contact-resistance test certificates.
Q9: What is the lead time?
Standard orders ship in 4 to 6 weeks; expedited 2 to 3 week production is available.
Q10: Do you support OEM branding?
Yes, private labeling and custom packaging are available for distributors and OEM customers.
Equivalent Terms in Other Languages
| Language | Equivalent Terms |
|---|---|
| Spanish | Abrazadera cuadrada de bronce para cinta de tierra, Grapa para pletina de puesta a tierra |
| Russian | Kvadratnyi zazhim dlya zazemlyayushchei shiny, Zazhim dlya zazemlyayushchei lenty |
| French | Collier carre pour feuillard de terre en bronze, Pince pour tresse de masse plate |
| Portuguese | Grampo quadrado de bronze para fita de aterramento, Presilha para barra de terra |
| Italian | Morsetto quadro in bronzo per piattina di terra, Morsetto per nastro di massa |
Linked Parts and Related Terms
Bronze Grounding Connectors for Transformers, Bronze Ground Rod Clamps, Acorn Clamps, Brass DC Earth Tape Clips, Bronze Pipe Clamps, Earth Tape, Tape-to-Rod Clamp, Tape Splice Clamp, Structural Bonding Clamp.
Related Products in this Category
- Bronze Grounding Connectors for Transformers – Transformer Tank Connectors
- Bronze Ground Rod Clamps – Acorn Clamps
- Bronze Grounding Couplers, Earth Rod Couplers, Threaded Couplers
- Brass DC Earth Tape Clips
- Bronze Pipe Clamps for Grounding
Get a Quote – Brass Bronze Square Earth Tape Clamps
Ready to source high-quality Square Earth Tape Clamps in brass or bronze for your next earthing project? Our team is available to provide technical recommendations, customised quotations, and fast order processing.
Price: US$ 12.50 per kilogram | Custom pricing available for bulk and OEM orders
Email: sales@cableglandsindia.com
Phone / WhatsApp: +91-22-43449300
Website: www.cableglandsindia.com
Share your project specifications, required quantities, and preferred delivery timeline, and we will respond with a detailed quotation within one business day.