Eaton MDLPV3400W PV Guard MC Breaker - UL Listed

Three-pole MDL frame design provides robust, space-efficient protection for DC PV circuits, delivering reliable performance in compact switchgear layouts and reducing panel complexity while enabling straightforward replacement or retrofits in existing PV systems. This configuration directly improves fault handling and coordinate with downstream protection, resulting in lower system downtime and fewer nuisance trips during transient DC events. The 400 A amperage rating combined with a 1000 Vdc rating and 7.5 kAIC interrupt capacity translates to strong fault containment in both rooftop and utility-scale installations, supporting higher system uptime and improved protection for PV arrays and DC distribution networks. The device is specified as without terminals, which simplifies field wiring, speeds installation, and minimizes potential wiring errors during panel assembly in constrained spaces. The 80% rated setting aligns with typical PV operating envelopes, ensuring stable, long-term operation in continuous DC service. PVGard compatibility and the photovoltaic class designation further illustrate its suitability for solar power protection, while the fixed trip type T186 ensures fast, predictable responses to overcurrent conditions, reducing the risk of equipment damage. The UL Listed certification provides a clear compliance signal for hospital, commercial, and industrial electrical environments, easing procurement and inspection processes. In practice, technicians appreciate the absence of terminals when coordinating with pre-wired enclosures or vendor-supplied PV protection modules, facilitating quicker maintenance and service planning. Industry insight shows that such design choices translate to lower total installed cost (TIC) and improved time-to-value for solar projects. This makes the MDLPV3400W a dependable backbone within Eaton’s PVGard protection strategy, supporting safer, more reliable PV systems across a range of installation types.