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Power supply unit
TD3 XA Modular Switchgear, Differential Block, MDD Switchgear and Energy Meters
In the realm of low-voltage electrical distribution and energy management, the category of modular switchgear, differential blocks, MDD switchgear, and energy meters represents the backbone of modern electrical installations. These devices are engineered for DIN rail mounting within electrical panels, offering compact, modular solutions for circ...
In the realm of low-voltage electrical distribution and energy management, the category of modular switchgear, differential blocks, MDD switchgear, and energy meters represents the backbone of modern electrical installations. These devices are engineered for DIN rail mounting within electrical panels, offering compact, modular solutions for circuit protection, residual current detection, and precise energy monitoring. Key technical parameters include rated currents from 6A to 125A, breaking capacities up to 10kA per IEC 60898, and voltage ratings of 230/400V AC. Differential blocks (RCCBs) are available in Type AC, A, and F for sinusoidal and pulsating DC fault currents, with sensitivities from 10mA to 300mA. MDD switchgear integrates motor protection with disconnection functions, while energy meters provide Class 1 or Class 0.5 accuracy for sub-metering and billing applications. These components are essential for achieving selective coordination and compliance with IEC 61439 standards.
These products are predominantly installed in electrical distribution boards, main switchboards, and sub-distribution panels across commercial buildings, industrial facilities, and residential complexes. In industrial automation, they serve as the interface between power supply and control circuits, ensuring safe isolation and fault protection for PLCs, drives, and motor control centers. Energy meters are critical for building management systems (BMS) and energy efficiency programs, enabling real-time consumption tracking and load profiling. The modular design allows for easy expansion and reconfiguration, making them ideal for retrofit projects and temporary power setups.
Within this category, key subcategories include modular circuit breakers (MCBs) like the TD3 XA series, available in 1P, 1P+N, 2P, 3P, and 4P configurations with B, C, and D tripping curves. Differential blocks (RCCBs) are offered as standalone units or combined RCBOs, with codes such as TD3 XA-40/0.03 indicating 40A rated current and 30mA sensitivity. MDD switchgear includes motor-protective circuit breakers with adjustable thermal and magnetic settings, coded as MDD-32/4 for 32A and 4-pole variants. Energy meters range from single-phase MID-approved units to three-phase multifunction meters with Modbus RTU communication, coded as EM-230/1P for basic models. The coding convention typically follows [Series]-[Rated Current]/[Poles]-[Options], ensuring clear identification.
Partnering with Electric Automation Network ensures access to genuine, certified products with real-time pricing and stock availability. Our engineering team provides tailored technical support for system design, coordination studies, and compliance verification. With express shipping worldwide, we minimize project downtime and ensure your electrical infrastructure meets the highest standards of safety and efficiency.
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