Technical Specifications Rated Voltage: 600V AC Trip Current Rating: 225A Pole Quantity: 3 Pole Interrupting Rating: 200kA AIC @480V AC Trip Characteristic: LI Thermal‑magnetic trip Mounting Method: Bolt‑on mounting Operating Temperature: ‑40℃ to +70℃ Storage Temperature: ‑50℃ to +85℃ Relative Humidity: 5%‑95%, non‑condensing Certifications: UL, CE industrial power distribution compliance
Functional Features Built‑in current‑limiting fuse assembly to suppress short‑circuit peak current. Thermal‑magnetic trip element executes overload delay and instantaneous short‑circuit protection. Manual handle operation for local switching‑on and switching‑off control. Visual trip indicator for fault state identification after protection action. High short‑circuit interrupt capacity for heavy‑fault industrial distribution environment. Mechanical interlock supports pad‑locking function for maintenance safety isolation. Standard bolt‑on installation compatible with TB4 series power distribution cabinet mounting structure.
Application Scenarios Main and branch circuit protection for industrial low‑voltage power distribution cabinet. Retrofit replacement of old‑style GE Tri‑Break power distribution system. Motor feeder circuit short‑circuit and overload protection. Factory workshop power supply loop fault isolation. Commercial building large‑capacity power distribution branch protection.
Performance Parameters Overload trip delay: Complies with UL thermal‑magnetic trip time‑current curve Short‑circuit breaking capacity: 200kA maximum symmetrical interrupting current Current‑limiting performance.
Structural Characteristics High‑strength black molded plastic main housing with internal arc‑quenching chamber structure. Front side equipped with manual operation handle and red trip status indicator window. Internal integrated current‑limiting fuse cartridge assembly. Bottom and top copper terminal lugs for bolt‑on cable connection. Mechanical pad‑lock structure on operation handle for maintenance lock‑out. Internal arc‑shield isolation structure prevents arc‑flash damage to peripheral components.
Working Principle Under short‑circuit fault condition, magnetic coil generates strong electromagnetic force to trigger instantaneous trip.
Installation Requirements Install the breaker inside NEMA‑1 standard power distribution cabinet by bolt‑on mode. Im Use copper lugs for cable connection, strictly follow manufacturer recommended torque value for terminal bolts.
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