LZMB1-4-A63 - EATON - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

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LZMB1-4-A63

Technical Specifications Parameter Specification / Typical Value Manufacturer / Brand Eaton Model Number LZMB1-4-A63 Product Line NZM Rated Current (Iₙ) 63 A Poles 4 Frame Size NZMB1-A Rated Operational Voltage (Uₑ) 400/415 V AC (IEC) / 690 V AC Rated Insulation Voltage (Uᵢ) 690 V AC Rated Frequency 50/60 Hz Rated Ultimate Breaking Capacity (I꜀ᵤ) Typically 36 kA / 50 kA @ 400V (Must be verified from datasheet) Trip Unit Type Thermal-Magnetic (Non-Adjustable) Overload Protection (Ir) Fixed at 63A Short-Circuit Protection (Im) Fixed magnetic trip Installation Fixed Type Standards Compliance IEC 60947-2

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The Eaton LZMB1-4-A63 is a 63-ampere, 4-pole, molded case circuit breaker (MCCB) from the industrial-grade Eaton NZM series. This model belongs to the compact LZMB1 (or NZMB1) frame size. The "A" denotes its interrupting capacity rating (e.g., 36 kA or 50 kA). The "63" specifies its fixed rated current of 63 Amperes. The key feature is its 4-pole design, which means it can simultaneously interrupt all three phase conductors and the neutral conductor in a three-phase system with neutral.