Hardwired EMS with remote digital display. 5-mode surge protection, full fault detection, microprocessor-controlled. Made in the USA. Lifetime warranty.
The EMS-HW50C is the gold standard in electrical protection for 50-amp RVs. As a full Energy Management System — not merely a surge protector — it uses a state-of-the-art microprocessor to continuously monitor your shore power and automatically cuts power to the RV the instant a dangerous condition is detected, then restores it automatically once power returns to safe levels.
What sets the 50-amp EMS-HW50C apart from its 30-amp counterpart is 5-mode surge protection covering all five possible surge paths on a 240V/50A system, delivering nearly double the joule capacity at 3,580J and 88,000 amps of surge current. Because it hardwires directly between your RV's AC inlet and electrical panel, it's always in place — no forgetting it at home, no risk of theft from the pedestal. The included 14-foot remote display cable mounts the scrolling digital readout inside your RV for at-a-glance monitoring without ever going outside.
Covers all five paths on a 50-amp system — L-N, L-N, L-G, L-L, and N-G — for maximum surge defense
14' data cable lets you mount the scrolling readout inside your RV for continuous monitoring of all power metrics
Hardwired installation means it's always working — never left behind, never stolen from the pedestal
Engineered and manufactured domestically with a Limited Lifetime Manufacturer Warranty
Portable surge protectors sit exposed at the power pedestal where they're vulnerable to theft and the elements. A hardwired EMS installs inside your RV once and protects you every single time you plug in — no setup required, no forgetting it at home. The EMS-HW50C also goes far beyond basic surge protection. A portable-only unit stops surges but can't detect open grounds, reversed polarity, lost neutrals, or frequency faults. The EMS-HW50C monitors all of these conditions simultaneously and responds in under a nanosecond. Not sure which surge protector is right for you? Check out our Surge Protection Comparison Guide.
• EMS-HW50C Hardwired Surge Protector / EMS Unit • Remote Digital Display Panel • 14' Data Cable • Mounting Hardware • Installation Instructions • Warranty Documentation
Professional installation is strongly recommended. The EMS-HW50C installs between your RV's AC shore power inlet and the main electrical panel. Always use #6 gauge wire for the HW50C. General steps: 1. Disconnect shore power completely and ensure the generator is off 2. Mount the EMS unit in a protected interior location near the AC inlet 3. Wire in-line between the AC inlet and your RV's breaker panel per the included wiring diagram (black → L1, white → L2, red → L3, green → ground) 4. Route the data cable to your preferred display location inside the RV 5. Mount the remote display panel — never plug in the display while RV power is on 6. Restore power and verify all readings on the remote display The modular design allows individual components to be replaced without removing the entire unit. 📥 Download the EMS-HW50C Installation & Operation Manual (PDF)
E-1 — Reverse Polarity (hot/neutral swapped at pedestal) E-2 — Open Ground (missing ground at pedestal) E-3 — Accidental 240V detected E-7 — Frequency too low (>9 Hz below 60 Hz) E-8 — Frequency too high (>9 Hz above 60 Hz) E-10 — Surge fault: internal surge circuit damaged, unit needs replacement PE prefix — Previous error code (e.g. PE-4 = prior low voltage event) No display illumination = Open/Lost Neutral detected. Do not attempt to bypass — have the pedestal inspected by a qualified electrician.
Manufacturer: Progressive Industries (a Navico Group brand) Installation & Operation Manual: 📥 Download the EMS-HW50C Manual (PDF) Warranty: Limited Lifetime Manufacturer's Warranty covering defects in materials and workmanship The E-10 surge fault indicator is the designed method of notifying you that the surge protection circuit has absorbed a damaging surge and the unit needs replacement Certifications: UL Certified and Canadian Approved Country of Origin: Made in the USA
Not sure which level of protection is right for your RV? Check out our Surge Protection Comparison Guide to find the best fit for your setup and budget.
Manufacturer: Progressive Industries (a Navico Group brand) Installation & Operation Manual: 📥 Download the EMS-HW50C Manual (PDF) Warranty: Limited Lifetime Manufacturer's Warranty — covers defects in materials and workmanship The E-10 surge fault indicator is the designed method of notifying you that the surge protection circuit has absorbed a damaging surge and the unit needs replacement Certifications: UL Certified and Canadian Approved Country of Origin: Made in the USA