Bronze Vise Connectors & Bronze Vise Clamps – Manufacturer & Exporter from India

Cable Glands India manufactures and exports Bronze Vise Connectors and Bronze Vise Clamps for electrical, earthing, and mechanical connection applications. Also known as Bronze Vise Type Connectors or Bronze Parallel Grove Connectors, these fittings are widely used for connecting two conductors in parallel or making branch connections in power distribution systems. The vise-type design provides high contact pressure through a multi-bolt clamping mechanism, ensuring low electrical resistance and vibration-resistant connections.

What Are Bronze Vise Connectors?

Bronze vise connectors (also called vise clamps or parallel clamp connectors) are cast or forged bronze fittings that use two or more bolts to grip conductors between grooved jaws. They are used in HT/LT overhead lines, substation earthing systems, and industrial cable connections where reliable, maintenance-free clamping of two conductors of equal or different sizes is required. The grooved parallel-groove design ensures full-surface contact with round conductors, minimizing contact resistance and hot-spot formation.

Key Features

• Material: Cast Bronze, Leaded Bronze, Aluminum Bronze, Phosphor Bronze
• Bolt Material: Bronze, Stainless Steel (SS304 / SS316), or Silicon Bronze
• Conductor Compatibility: Copper, ACSR, AAC, AAAC, Al alloy conductors
• Conductor Size Range: 10 mm² to 500 mm² (per groove)
• Groove Options: Single groove, double groove (parallel groove), or offset groove
• Types: Inline connector, T-type (branch) connector, Cross connector
• Finish: Plain, Tin-plated, or Silver-plated contact surfaces
• Compliance: ASTM B62, ASTM B584, BS 2874, IS 318, DIN 17662, IEC 61284

Conductor Size Compatibility & Technical Specifications

Bronze Alloys Used in Vise Connectors – US & International Comparison

Applications of Bronze Vise Connectors

• Overhead LT and HT line tap connections and conductor jointing
• Earthing and grounding system conductor joints and cross bonding
• Substation bus bar connections and equipment grounding
• Industrial cable tray earthing bonding
• Renewable energy (solar farm) DC earthing systems
• Railway traction earthing and bonding

Why Choose Cable Glands India for Bronze Vise Connectors?

• Manufactured from premium bronze alloys to ASTM, BS, IS, DIN and IEC standards
• Available in standard inline, T-branch, and cross connector configurations
• Custom conductor size combinations and bolt configurations available
• Tin-plated and silver-plated variants for superior contact performance
• Global delivery to UK, USA, UAE, Australia, South Africa, Southeast Asia

Frequently Asked Questions (FAQs)

What is the difference between a Bronze Vise Connector and a Bronze Parallel Groove Connector?

Both terms refer to the same product. A vise connector or vise clamp uses the same parallel-groove principle — the conductor is clamped between two grooved jaws (or plates) tightened by bolts. The term “vise connector” is common in the UK and India; “parallel groove connector” is more common in North America (NEMA standards).

Can Bronze Vise Connectors be used for aluminum conductors?

Yes. Our bronze vise connectors are compatible with aluminum conductors (AAC, AAAC, ACSR). A tin-plated surface is recommended for aluminum-to-copper connections to minimize galvanic corrosion at the interface.

What bronze alloy is used for vise connectors?

The most common alloy is ASTM B62 / UNS C83600 (Leaded Tin Bronze / Gunmetal). Aluminum Bronze (C95400) is used where higher mechanical strength is required. Silicon Bronze bolts are often preferred for their excellent corrosion resistance.

What is the current-carrying capacity of bronze vise connectors?

Current carrying capacity depends on conductor cross-section, contact surface area, and ambient conditions. As a reference, a PG connector rated for 120 mm² copper conductor can typically carry 300–400 A continuously under standard conditions.