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Notice • Read this instruction manual carefully before using this Air Circuit Breaker. • This instruction manual does not include all information regarding installation and maintenance. • For further information, please contact Hyundai Heavy Industries (HHI) or your local dealer.
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| U-Series | Air Circuit Breakers Instruction Manual For Operational Safety of Air Circuit Breakers Safety Practices This instruction manual applies only to U-Series air circuit breakers (ACB) regarding installation and maintenance procedures. Installing and maintaining these products improperly may result in serious personal injury, property damage, or even death. Therefore this instruction manual must be read and understood at any step in unpacking, assembly, operation, and maintenance of the breaker.
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2 | 3 Installation Precautions • Installation work must be performed by qualified personnel. CAUTION • Prior to commencing any installation work, open an upstream circuit breaker to shut off all sources of power. Otherwise, electric shock may occur. • Tighten terminal bolt up securely to the specified torque. Otherwise, a fire may occur.