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50,000

Disconnectors

About Us

S&S Power Switchgear Equipment Limited (SSPSE) specialises in Medium Voltage (MV) and High Voltage (HV) Disconnectors. With a legacy spanning five decades, we have honed our expertise in designing and manufacturing critical components that ensure the safety and reliability of power systems worldwide. We are a subsidiary of S&S Power, backed by its global engineering and technology expertise.

Our product range includes HV Disconnectors (36kV to 765kV) and Earthing Switches (up to 765kV), adhering to IEC standards. We also provide retrofit solutions for ageing equipment in commissioned substations, evaluating outdated components for replacement, modification, or reuse to align with current technological standards. Our Technical Services offer rigorous certification, testing, and on-ground support, while our Spare Part Service ensures the longevity of units.

Our Products

Center Break

A Center Break Disconnector is a high-voltage electrical switching device that uses a self-wiping contact system with very low operating torque. It's designed for power systems up to 420 kV, featuring simultaneous three-pole operation through a single mechanism, and has been rigorously tested for various conditions including ice breaking and seismic events, making it highly reliable for power distribution networks.

Double Break

A Double Break Disconnector is a high-voltage switching device featuring turn-and-twist contacts with both vertical and horizontal terminal configurations. It's characterized by its enclosed actuator assembly and flexible operation modes - allowing both simultaneous three-pole operation and individual pole control at 420 kV - and has been comprehensively tested for extreme conditions including ice breaking and seismic events.

Pantograph

A Pantograph Disconnector is a space-efficient high-voltage switching device characterized by its low civil engineering profile and unique trapeze contact system with 4-point fixed contacts. It features a scissor-style assembly with multi-finger hinge contacts for current transfer and offers flexibility in busbar layouts while meeting international standards for electrical safety and performance.

Knee Type

Knee-type disconnectors are essential high-voltage electrical components used in power systems to isolate circuit sections during maintenance or fault conditions, featuring a compact, knee-like mechanical structure that allows installation in limited spaces while handling voltages up to 765 kV.

Vertical Break

Vertical Break disconnectors are critical high-voltage power system components that safely isolate electrical circuits using a space-efficient vertical breaking mechanism ideal for constrained substation environments.

R3

R3 (Repair, Refurbishment and Replacement) services for disconnectors encompass a comprehensive range of maintenance solutions focused on high-voltage disconnector performance optimisation and lifespan extension. These critical electrical isolation components receive expert attention through routine maintenance to ensure smooth operation, repair services to address mechanical or electrical failures, refurbishment of older units to restore original functionality, and thorough inspection and testing to verify compliance with safety and performance standards, ultimately preventing system outages and faults in high-voltage electrical systems.

Spare Part Services

Spare parts services in the disconnector business provide essential replacement components—including mechanical parts, electrical contacts, insulators, operating mechanisms, and arc suppression systems—manufactured to original equipment standards to ensure compatibility and safety. These services maintain disconnector integrity through timely replacement parts that minimize downtime and extend equipment lifespan, while enabling upgrades to improve performance or meet new regulations. By offering original spare parts, customised repairs, and fast-track delivery of critical components, these services ensure power systems remain operational with minimal disruption, helping disconnectors meet ongoing safety and performance standards that contribute to the overall efficiency and reliability of the electrical grid.

Product Training

Product training in the disconnector business is crucial for ensuring that personnel—whether technicians, engineers, or maintenance staff—understand how to properly install, operate, maintain, and troubleshoot disconnector equipment. These trainings are typically offered by manufacturers or service providers and aim to ensure that users are well-versed in the functionality, safety protocols, and best practices related to disconnectors.

Supervision

Supervision of disconnector installation ensures high-voltage disconnectors are correctly and safely installed in power systems, maintaining compliance with safety standards and operational requirements. This process encompasses thorough pre-installation planning, enforcement of safety protocols, proper alignment and positioning of equipment, oversight of connections and wiring, comprehensive inspection and testing, and complete documentation of the installation process. Effective supervision is essential for the safe and reliable operation of power system equipment, minimising failure risks and maximising operational efficiency over time.

Reimagining
Engineering Excellence

About Us