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WL
WL – Air Circuit Breakers (ACBs) for Low Voltage Power Distribution
Air Circuit Breakers (ACBs), commonly referred to as WL series or power circuit breakers, are essential protective devices designed for low-voltage electrical systems up to 690V AC. These breakers are characterized by their high breaking capacity, typically ranging from 65kA to 1...
WL – Air Circuit Breakers (ACBs) for Low Voltage Power Distribution
Air Circuit Breakers (ACBs), commonly referred to as WL series or power circuit breakers, are essential protective devices designed for low-voltage electrical systems up to 690V AC. These breakers are characterized by their high breaking capacity, typically ranging from 65kA to 150kA at 415V, and rated currents from 630A to 6300A. They feature electronic trip units with adjustable protection curves (L, S, I, G) for overload, short-circuit, and ground fault protection. Available in 3-pole (3P) and 4-pole (4P) configurations, WL ACBs support fixed, draw-out, and plug-in mounting styles, with optional accessories like shunt trips, undervoltage releases, and auxiliary contacts. Their modular design allows integration with communication protocols such as Modbus, Profibus, or Ethernet for smart grid applications.
WL ACBs are predominantly installed in main distribution boards (MDBs), switchgear panels, and generator paralleling systems within industrial plants, commercial buildings, data centers, and critical infrastructure. They serve as incoming feeders, bus-tie breakers, or outgoing feeders in power distribution networks, ensuring selective coordination and arc-flash mitigation. Typical sectors include manufacturing, oil and gas, mining, healthcare, and renewable energy installations where high reliability and continuous uptime are mandatory.
Key subcategories within the WL category include fixed-mounted breakers (e.g., WL 1600, WL 3200) and draw-out versions (e.g., WL 630, WL 1250, WL 2500). Article codes typically follow a pattern like WL-XXXX-YY, where XXXX denotes the rated current in amperes (e.g., 1600, 3200) and YY indicates the number of poles (e.g., 3P, 4P). Additional variants include electronic trip units (ETU) with different protection profiles, such as ETU 45B or ETU 76B. These breakers are often paired with accessories like motor operators, mechanical interlocks, and door interlocking mechanisms.
Partnering with Electric Automation Network ensures access to genuine WL ACBs with real-time pricing and global express shipping. Our engineering team provides tailored technical support, including trip unit configuration, coordination studies, and documentation for each article. We simplify procurement for complex projects, reducing downtime and ensuring compliance with international standards like IEC 60947-2.
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