PXB6 Series Comprehensive Terminal Distribution Protection Solutions

Core Features and Design

The PXB6 Series is engineered as a versatile all-in-one terminal distribution system, encompassing multiple product variants to address diverse electrical protection requirements. Key models include PXB6-63/125 for standard AC miniature circuit breakers with B/C/D tripping curves and currents up to 125A; PXB6DC-63/PXB6HDC-63 for DC applications with voltages up to 1000V and specialized high-voltage endurance; PXB6L-63 for electronic RCBO with adjustable residual current sensitivity (30-300mA, AC/A type) and fast <0.1s tripping; PXL6a-100 for electromagnetic residual current breakers offering industrial-grade 10kA capacity and multi-pole options; PXD6-125 for isolation switches providing safe disconnection with short-time withstand up to 12Ie; and auxiliaries like PXB6-OF (auxiliary contacts), PXB6-SD (alarm contacts), PXB6-MX (shunt releases), and PXB6-MV MN (over/under voltage releases) for enhanced monitoring. Unified compact design with 45mm terminal distance and IP20 protection facilitates DIN rail mounting, while breaking capacities range from 4500A to 10kA, insulation 500V, and impulse 4000V ensure robustness. Tested electrical life exceeds 4000 cycles, with mechanical endurance >10,000, supporting pollution degree 2 environments from -25°C to +70°C.

Accessory Flexibility and Customization  

The series emphasizes modularity, allowing users to build customized solutions. Accessories integrate seamlessly: auxiliary contacts (PXB6-OF) for remote status signaling at AC230V/6A or DC110V/1A; alarm contacts (PXB6-SD) for fault alerts; shunt releases (PXB6-MX) for remote tripping at AC230V; and over/under voltage modules (PXB6-MV MN) that trip at >265V or <165V with auto-recovery in 175-255V range. Conductor cross-sections support 1-50mm² copper wires, tightening torque 2.5-3.0N·m. Tripping characteristics are calibrated at 30°C, with non-tripping at 1.13In ≤1h and tripping at 1.45In <1h for overloads, and magnetic thresholds 3-20In for short-circuits, enabling selectivity. This flexibility caters to specific needs, from basic isolation to advanced leakage detection, forming a comprehensive ecosystem.

Applications and Compliance  

As a one-stop scheme, the PXB6 Series satisfies complete terminal distribution demands in buildings, factories, telecom, and infrastructure, protecting against overloads, short-circuits, leakages, and voltage anomalies while enabling safe isolation. It excels in DC solar systems (PXB6DC), humid environments (PXB6L/PXL6a), heavy loads (PXB6-125), and control panels with auxiliaries for monitoring. Full compliance with IEC60898-1, IEC60947-3/5-1, GB/T10963.1, and CCC certification guarantees safety and interoperability. Ordering specifies model, poles, current/curve, residual type/sensitivity, and quantity (e.g., PXB6L-63 1P+N C/25A 30mA AC). This integrated approach reduces procurement complexity, minimizes downtime, and optimizes costs by providing a single-source solution for end-to-end circuit protection.

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