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E4H4000 R4000 PR121/P-LSIG WMP 3P NST

The ABB E4H4000 R4000 PR121/P-LSIG WMP 3P NST is a high-performance low-voltage circuit breaker designed for high-current industrial applications, providing protection and control for low-voltage power distribution systems. This breaker is part of the E4 series from ABB, which is renowned for offering reliable protection for industrial equipment against overload, short-circuit, and earth fault conditions.

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Parameters: Model Number: ABB E4H4000 R4000 PR121/P-LSIG WMP 3P NST Rated Current (In): 4000 A Number of Poles: 3P (three-phase) Rated Voltage: 690 V AC (commonly used in low-voltage systems) Breaking Capacity (Icu): 65 kA at 415 V AC Trip Unit Type: PR121/P-LSIG (Long-time, Short-time, Instantaneous, and Ground Fault Protection) Trip Unit Features: Long-time (L) Protection: Adjustable from 1.0 to 10 times rated current. Short-time (S) Protection: Adjustable from 3 to 12 times rated current. Instantaneous (I) Protection: Adjustable for rapid short-circuit response. Ground Fault Protection (optional): For sensitive protection against earth leakage. Mounting Type: Fixed or draw-out (optional depending on application) Mechanical Life: 20,000 operations at rated current Electrical Life: 10,000 operations at rated current Temperature Range: -5°C to +50°C Protection Class: IP20 (for indoor use; external enclosures can be used for harsher environments) Auxiliary Contacts: Optional for remote signaling and control. Shunt Trip / Undervoltage Trip: Optional, for remote tripping and control functions. Energy Efficiency: Typically 97%, ensuring minimal energy loss during operation.