Wengart 250 Amp DC MCCB Circuit Breaker, 250V 1-Pole Molded Case Breaker for Solar PV System, High-Capacity Battery Bank & Off-Grid Inverter, Heavy-Duty DC Master Disconnect, WGM1PV-250

The Ultimate Safety Backbone for High-Wattage DC SystemsWhen your off-grid setup scales up to 250 Amps, standard safety components are no longer enough. The Wengart MCCB WGM1PV-250 is a professional-grade Molded Case Circuit Breaker specifically designed for the high-current demands of Solar Systems and large-scale Other DC Applications. Rated for DC 250V and a massive 250A continuous load, this 1P breaker serves as the critical "Master Guard" between your lithium battery arrays and your power-hungry inverters.Precision Engineering for Arc Suppression Breaking a 250A DC circuit under load is a significant engineering challenge. Unlike AC power, DC doesn't have a "zero-crossing" point to help extinguish the electrical arc. Wengart solves this with an advanced internal geometry that utilizes silver-alloy contacts and specialized de-ion grid plates. This technology ensures that when the breaker trips, the circuit is broken cleanly and safely, protecting your expensive 48V or 96V system from catastrophic failure.Technical SpecificationsAmperage Rating: 250 Amp (Continuous Duty)Voltage Rating: DC 250V Max (Ideal for 12V/24V/48V/96V systems)Pole Configuration: 1-Pole (Single Pole)Interrupting Capacity: 10kA (Professional Grade)Terminal Type: Heavy-Duty M8 Screw Terminals (High Torque Support)Application: Solar PV, Battery Banks, EV Charging Stations, Off-Grid PowerPre-Installation Guide (Lowering Your Return Rate)Q: Is this breaker too big for a standard household panel? A: Yes. This is an MCCB (Molded Case Circuit Breaker), which is significantly larger and heavier than a standard DIN-rail breaker. It is designed for surface mounting or within specialized DC distribution boxes. Please verify the dimensions in our product images before ordering.Q: Does polarity matter? A: Absolutely. To ensure the Arc-Quenching system works correctly, you must follow the "+" and "-" markings on the breaker. Incorrect wiring will not only fail to protect your system but may also damage the breaker itself.Q: What wire size should I use? A: For a 250A load, we recommend a minimum of 4/0 AWG or 250kcmil copper wire. Ensure your terminal lugs are properly crimped for a low-resistance connection.

• Industrial-Grade 250A Protection: Engineered for the most demanding energy storage systems. This 250Amp MCCB provides a robust safety barrier for high-power Solar Systems, capable of handling the massive current flow from large battery banks to 10kW+ inverters. It is the definitive upgrade for users moving beyond the limits of standard miniature breakers.
• Superior Magnetic Arc-Quenching: Safety without compromise. DC currents are notoriously difficult to interrupt; our DC Circuit Breaker features a specialized internal arc-chute and permanent magnet system that pulls the arc away from the contacts instantly. This ensures a clean, safe disconnect and prevents internal carbon buildup during a fault.
• Heavy-Duty Terminal Integrity: Built for the thickest conductors. The oversized copper terminals are designed to accommodate high-gauge cables (up to 250kcmil or 4/0 AWG) with ease. This high-torque connection point minimizes electrical resistance and prevents the heat-related terminal melting often seen in lower-quality DC Applications.
• Molded Case Ruggedness: Engineered for longevity in harsh environments. The WGM1PV-250 is housed in a high-impact, flame-retardant molded shell that protects internal precision components from structural vibration and dust. It’s the ideal DC Master Disconnect for static home powerwalls or mobile command centers.
• Reliable Master Disconnect Function: Total control at your fingertips. The high-leverage toggle handle provides a clear tactile response, allowing you to use this breaker as a primary manual disconnect for your Battery Bank. Whether for emergency isolation or routine maintenance, it ensures your high-voltage DC grid remains under your absolute control.