Siemens HMX3B800 — Molded Case Circuit Breakers

Description The Siemens HMX3B800 Molded Case Circuit Breaker provides reliable circuit protection for high-capacity electrical distribution systems. This 3-pole, 800-amp breaker operates at 600 volts AC with an interrupting capacity of 65kA at 480V. The HMX3B800 features a bolt-on connection and thermal magnetic trip unit, ensuring dependable overload and short-circuit protection in demanding industrial applications. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Circuit Protection Part Number HMX3B800 Subcategory Molded Case Circuit Breakers Series VL Series Type HMX Frame Size MG Frame Poles 3 Amperage Rating 800A Voltage Rating 600V AC Interrupting Rating 65kA @ 480V Protection Type Thermal Magnetic Trip Functions Long-Time and Instantaneous Connection Type Bolt-On Mounting Type Panelboard Phase 3 Temperature Rating 40°C Certifications UL Listed Standards Compliance UL 489 Terminal Connection Load Side Lug Country of Origin Mexico Weight 40 lbs Information About HMX3B800 The HMX3B800 is part of Siemens’ VL Series, designed to deliver high-performance protection for large-scale electrical systems. It utilizes a bolt-on mounting configuration suitable for panelboard and switchgear installations. With a thermal magnetic trip mechanism, it combines long-time and instantaneous trip functionality to prevent equipment damage from electrical faults. Built for global use and tested to exceed UL endurance standards, the HMX3B800 offers robust performance and compatibility across a range of industrial and commercial environments. Key Features: High Interrupting Capacity: Rated for 65kA at 480V to handle heavy-duty fault currents. Thermal Magnetic Protection: Combines overload and short-circuit protection in one compact unit. Bolt-On Design: Ensures secure mounting for stable electrical connections. 3-Pole, 800A Configuration: Ideal for high-current, three-phase systems up to 600V. VL Series Compatibility: Modular design supports system flexibility and accessory integration. UL Listed: Meets industry safety and reliability standards. Compact Construction: Saves panel space and simplifies system layout. Global Design: Supports worldwide applications with uniform footprint and performance. The HMX3B800 delivers the reliability and precision required for high-capacity electrical protection in industrial power distribution systems.