Amps: 1600 amps | Series: NW | # of poles: 3 | Voltage: 600 volts | Phase: 3-phase | Made in: UNITED STATES | Cat.: WL3EER44A9SXXXXXXX
Insulated Case Circuit Breakers (ICCB) are compact, enclosed circuit breakers designed for protecting electrical distribution systems in industrial, commercial, and utility applications. They combine a rugged insulated housing with adjustable electronic or thermal-magnetic trip units, high interrupting capacity, and selectable accessories for motor protection, ground-fault, and communication. ICCBs are valued for safety, ease of installation in switchgear or panels, and reliable short-circuit and overload protection across a range of voltage and current ratings.
Verify frame and trip unit ratings, interrupting capacity (kA), standards compliance (UL, IEC), physical condition, service history, and whether accessories or communication modules are included. Confirm compatibility with your panel and protection scheme.
Ship in original or well-padded packaging with protective covers on terminals. Secure internal parts, label as electrical equipment, and use carriers experienced in heavy electrical gear. Follow local rules for hazardous components like batteries in trip units.
Check frame type (draw-out vs fixed), mounting dimensions, bus and terminal connections, trip unit voltage and control wiring, and communication protocol if integrating into a protective relay or BMS.
Perform visual inspections, cleaning, contact resistance checks, mechanical operation tests, and trip unit functional tests at recommended intervals. Test insulation resistance and perform timing/secondary injection tests after repair or annually for critical installations.