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Modular Switchgear – Tertiary and Differential
Modular switchgear, also known as tertiary switchgear or differential switchgear, refers to a family of DIN-rail mounted devices designed for overcurrent protection, short-circuit protection, and residual current detection in low-voltage electrical installations. These components typically include miniature circuit breakers (MCBs), residual curr...
Modular switchgear, also known as tertiary switchgear or differential switchgear, refers to a family of DIN-rail mounted devices designed for overcurrent protection, short-circuit protection, and residual current detection in low-voltage electrical installations. These components typically include miniature circuit breakers (MCBs), residual current devices (RCDs), and combined RCBOs, with ratings ranging from 6A to 125A, breaking capacities up to 10kA per IEC 60898, and pole configurations from 1P to 4P. They are engineered for modularity, allowing easy integration into distribution boards and control panels, with standardized 18mm width per pole and clip-on mounting for rapid assembly.
These devices are primarily deployed in tertiary sector installations such as commercial buildings, office complexes, retail spaces, and public infrastructure, as well as in residential and light industrial environments. They serve as the final line of defense in electrical distribution systems, protecting branch circuits against overloads and earth faults. Common applications include lighting circuits, socket outlets, HVAC systems, and small motor controls, where reliable discrimination and selective coordination are critical for system uptime and safety.
Key subcategories within this family include miniature circuit breakers (MCBs) like the EA06-MCB series, residual current devices (RCDs) such as the EA06-RCD series, and combined RCBOs. Article codes typically follow a structured pattern: for example, EA06-MCB-1P-C16 indicates a 1-pole, 16A, C-curve MCB, while EA06-RCD-2P-30mA denotes a 2-pole, 30mA residual current device. Other variants include EA06-MCB-3P-D32 for three-phase motor protection and EA06-RCBO-4P-40A-300mA for combined protection in industrial circuits.
Partnering with Electric Automation Network ensures access to genuine modular switchgear with real-time pricing, global express shipping, and dedicated technical support from specialized engineers. We provide detailed documentation per article, including tripping curves and wiring diagrams, to streamline specification and commissioning. Our multilingual portal simplifies procurement across borders, while our engineering team assists with coordination studies and product selection for optimal system performance.
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