Progressive Industries Hardwire 50 Amp RV Surge Protector - W/Remote Display

Why Choose the Progressive Industries EMS-HW50C?

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.

Complete Protection Features

• High/Low Voltage Protection: Automatically cuts power if voltage drops below 104V or rises above 132V, then auto-restores when safe
• 5-Mode Surge Protection: Protects all five paths — Line-to-Neutral (L-N), Line-to-Neutral (L-N), Line-to-Ground (L-G), Line-to-Line (L-L), and Neutral-to-Ground (N-G) — 3,580 joules / 88,000 amp rating / <1 nanosecond response time
• Accidental 240V Protection: Detects and blocks accidental connection to incorrect 240V power; if detected while power is already applied, the EMS shuts off instantly (display reads voltage + E-3)
• Open Ground Protection: Reads E-2 error code and blocks power if the pedestal ground is missing
• Reverse Polarity Protection: Reads E-1 error code and blocks power if hot and neutral wires are swapped at the pedestal
• Lost/Open Neutral Protection: Blocks power entirely — display will not light — if the neutral line is open or missing
• AC Frequency Protection: Shuts down power if frequency deviates more than ±9 Hz from 60 cycles per second (E-7 or E-8 error code)
• Surge Fault Indicator: E-10 error code alerts you if a power surge has damaged the internal surge protection circuit, signaling replacement is needed
• Previous Error Indication: Stores and displays the last fault code (PE prefix) so you can diagnose what caused a prior power interruption — clears when power is disconnected
• A/C Compressor Time Delay: Built-in adjustable delays (136-second and 15-second settings) protect compressors from short-cycling after a power interruption
• Microprocessor Controlled: Computer-driven state-of-the-art microprocessor manages all EMS functions and monitoring simultaneously
• Thermally Protected: Internal thermal protection safeguards the unit itself during extreme operating conditions
• Field Serviceable / Modular Design: Individual components can be replaced without removing the entire unit — plug-and-play replacement parts