ABB HD4.W 12.12.32 SF6 Medium Voltage Circuit Breaker

ABB HD4.W 12.12.32 Medium Voltage SF6 Circuit Breaker

The ABB HD4.W 12.12.32 is an industrial grade, medium voltage sulphur hexafluoride (SF6) gas-insulated, withdrawable circuit breaker for severe industrial, utility and marine applications. The HD4 series is designed for high electrical stresses and uses unchopped current breaking technology in a sealed-for-life gas chamber to minimise hazardous transient overvoltages and to provide fast dielectric recovery.

The HD4 is applicable for offshore vessel switchboards and crucial shore-to-ship power distribution systems or large industrial grids.W 12.12.32 delivers uncompromised safety, zero-maintenance pole shells and extraordinarily extended mechanical life. The withdrawable (“W”) form provides easy mechanical racking, minimising system downtime during periodic inspections or switchgear reconfiguration.

Model Details

• Product Series: HD4 Series (Indoor Medium Voltage SF_6 Gas Circuit Breakers)
• Model Number: HD4.W 12.12.32
• Manufacturer Part Number: HD4.W 12.12.32 / 1VDB000001 (Internal ABB codes vary by auxiliary voltage and configuration options; contact engineering for exact matching code).

Technical Specifications

Features and Benefits

1. Soft Arc Quenching Technology SF6 gas is used to quickly quench electrical arcs without any arc chopping, therefore avoiding the possibility of inductive switching overvoltages which might deteriorate motor or transformer insulation.
2. Sealed-for-Life Poles All three breaking poles are contained within a sealed, gas-filled structural shell, which makes the entire unit impervious to environmental threats such as high humidity, dust and saltwater atmospheres.
3. Withdrawable Design (“W”): Built into strong racking trucks and safety interlocks to stop unintentional insertion or removal of the breaker in the closed position.
4. Mechanical Mechanism Heavy duty mechanical stored energy operating system, manually charged and electrically motor operated from a remote location.

Applications in Industries

• Marine & Offshore Switchboards Primary propulsion and auxiliary electrical distribution systems on board cargo boats, cruise lines, oil tankers and drilling rigs.
• Shore-Side Power Supply (Cold Ironing): High-reliability protection solutions for ship to shore power supply systems.
• Power Generation and Substations: Protection for medium voltage step-up and step-down power transformers, utility distribution networks and generator feeders.
• Heavy Process Industry: Heavy industrial uses such as chemical processing plants, metal refineries and mining facilities that require high switching operations.

System Compatibility & Cross-References

The HD4.W 12.12.32 is fundamentally engineered for precise integration into factory-standard ABB medium-voltage switchgear portfolios, as well as retrofit configurations:

• Switchgear Compatibility: Directly compatible with ABB UniGear ZS1, UniSafe, and PowerCube enclosures.
• Part Number Cross-References: Frequently replaces older generation air or minimum-oil breakers, as well as vintage SF6 types like the ABB HPA series or legacy SACE SF6 units.

Lead Time & Shipping Information

• In-Stock Status: Typically ships within 1–3 business days for standard emergency replacement parts.
• Reconditioned Units: 7–10 business days to complete exhaustive multi-point testing protocols.
• Shipping Logistics: Worldwide crated sea/air freight options are available. Hazardous material packaging rules apply due to the pressurized SF6 gas containment inside the poles.