Objectives

The primary objective of this tender is the manufacture, testing, supply, and delivery of miniature circuit breakers (MCBs) that comply with specified standards and technical requirements. The tender aims to ensure the procurement of high-quality electrical protection devices suitable for various installation types and ratings, with an emphasis on compliance, reliability, and performance.

Scope

The scope encompasses:

• Manufacture, testing, supply, and delivery of a wide range of miniature circuit breakers with different current ratings, breaking capacities, and mounting configurations.
• Provision of earth leakage protection units and accessories such as DIN rail adapters and tray plates.
• Compliance with relevant standards (e.g., SANS 556-1, SANS 60947-2, VC 8036, VC 8035).
• Delivery to specified locations within stipulated timeframes, with packaging, inspection, and testing requirements.
• Adherence to technical, safety, and quality assurance standards throughout the supply chain.

Technical Requirements

The technical specifications include:

• Manufacture of air-break, miniature circuit breakers suitable for fixed installation, with selectivity category A.
• Compliance with SANS 556-1, SANS 60947-2, VC 8036, VC 8035, and relevant IEC standards.
• Rated operational voltage: 240 V AC for single and double pole, 415 V AC for triple pole.
• Minimum breaking capacities: 2.5 kA or 5 kA, with specified impulse withstand voltages.
• Construction of robust, compact, and mechanically strong devices with enclosed operating mechanisms.
• Provision of necessary terminal covers, phase barriers, and mounting hardware.
• Clear markings, detailed technical data, and compliance certificates, including type test certificates.
• Availability of accessories such as DIN rail adapters and tray plates.
• Type testing by accredited laboratories, routine testing, and inspection prior to dispatch.
• Conformance to dimensions, ratings, and safety features as specified in the technical schedules.

Skills and Skills Requirements

The tenderer must demonstrate:

• Proven manufacturing capability of high-quality miniature circuit breakers meeting the specified standards and technical specifications.
• Technical competence in electrical device design, testing, and certification processes.
• Experience in producing devices with type test certificates from accredited laboratories.
• Quality assurance systems, including ISO 9001 or equivalent certification.
• Ability to provide detailed technical data, drawings, and test reports.
• Capacity to undertake routine and type testing, inspection, and certification as per standards.
• Logistical and supply chain skills to ensure timely delivery, packaging, and handling.
• Knowledge of applicable safety, environmental, and occupational health standards.
• Experience in providing accessories and auxiliary components compatible with the main products.
• Ability to support after-sales services, warranty, and technical support.

Summary

The successful tenderer must possess the technical expertise, manufacturing capacity, quality assurance systems, and logistical capabilities to produce and supply compliant miniature circuit breakers and accessories within the specified timeframes, ensuring safety, reliability, and adherence to all relevant standards and specifications.