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Switch disconnector
Switch disconnectors, also known as load-break switches or safety switches, are essential components in electrical distribution and automation systems. These devices provide a visible air gap for safe isolation of circuits during maintenance or emergency shutdowns. Typically available in 2P, 3P, 4P configurations, they handle rated currents from...
Switch disconnectors, also known as load-break switches or safety switches, are essential components in electrical distribution and automation systems. These devices provide a visible air gap for safe isolation of circuits during maintenance or emergency shutdowns. Typically available in 2P, 3P, 4P configurations, they handle rated currents from 16A up to 3200A, with rated operational voltages up to 690V AC and 440V DC. They feature high short-circuit withstand capacities (up to 50kA) and are designed for panel mounting or enclosure integration. Key technical specifications include utilization categories AC-21, AC-22, AC-23, and DC-21, ensuring compatibility with resistive, inductive, and motor loads. Many models include auxiliary contacts for status signaling and padlockable handles for lockout/tagout (LOTO) compliance.
These devices are deployed across industrial, commercial, and utility sectors. Primary applications include main disconnects in distribution boards, motor control centers (MCCs), and switchgear assemblies. They are critical in renewable energy systems (solar PV arrays, wind turbines), data centers, and manufacturing plants for isolating transformers, capacitors, and power supplies. In building automation, they serve as emergency stop switches and maintenance disconnects for HVAC systems, elevators, and conveyor lines. Their robust construction ensures reliable operation in harsh environments with IP65 or IP66 enclosures.
Our catalog includes subcategories such as fused switch disconnectors (e.g., series like OT, OS, or NH-fuse based), non-fused switch disconnectors, and changeover switches. Key article codes follow patterns like "SD-3P-100A" or "SWD-4P-630A", where the prefix indicates type, followed by pole count and rated current. For example, the "OT63F3" series offers 3-pole fused disconnectors up to 63A, while "OS100D04P" represents 4-pole non-fused switches rated at 100A. We also stock modular switch disconnectors for DIN rail mounting (e.g., "SD-M-2P-32A") and heavy-duty models for high-power applications.
Partnering with Electric Automation Network ensures access to genuine, certified products with real-time pricing and global express shipping. Our engineering team provides personalized technical support for product selection, coordination studies, and compliance with IEC 60947-3 or UL 98 standards. We offer detailed documentation including dimension drawings, wiring diagrams, and test certificates. Whether you need a single unit for a retrofit or bulk quantities for a new installation, we deliver fast and reliably.
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