15-50V to 9V 3A DC-DC Waterproof Step-Down Buck Power Converter Module EM15-50S0903P

📋 Overview

The EM15-50S0903P is a non-isolated DC-DC step-down (buck) converter that takes a wide 15V to 50V DC input and delivers a clean, regulated 9V DC output at up to 3A (27W maximum). Built on a synchronous rectification platform with high efficiency and a compact, waterproof housing, it's an easy drop-in solution for stepping down higher voltage sources — like 24V or 48V battery banks and vehicle systems — down to 9V for accessories, electronics, and control circuits.

⭐ Key Features & Benefits

• Wide input range (15-50V DC) — Works with 24V, 36V, and 48V nominal systems without needing a specific voltage match.
• Stable 9V / 3A output — Delivers up to 27W of clean, regulated power for accessories, relays, radios, and control electronics.
• High efficiency (up to 94.4%) — Synchronous rectification minimizes wasted heat and power loss.
• Waterproof IP67 housing — Sealed epoxy-filled enclosure suited for outdoor, automotive, marine, and industrial environments.
• Built-in protections — Short circuit, overload, and low-voltage (undervoltage) protection with automatic recovery.
• Wide operating temperature range — Rated for continuous operation from -40°C to +55°C.

📊 Specifications

📦 What's in the Box

• 1× EM15-50S0903P DC-DC Converter Module (with pre-attached input/output wire leads)

📝 Note: Wire leads are bare-ended for direct connection. Mounting hardware, connectors, and enclosures are not included and must be purchased separately.

🎯 Common Applications

• Industrial Control Systems — Powering 9V-rated sensors, relays, and controllers from higher-voltage industrial buses.
• Alternative Energy Setups — Stepping down solar or battery bank voltage to a stable 9V rail.
• Automotive & Forklift Electronics — Regulating 24V/48V vehicle power down to 9V for accessories.
• Golf Carts & Electric Vehicles — Supplying 9V loads from higher-voltage battery packs.
• Telecommunications Equipment — Powering 9V devices from higher-voltage telecom power buses.
• Marine & Boat Electronics — Sealed, waterproof design suited for onboard 9V accessory power.
• LED Lighting Projects — Driving 9V LED strips or fixtures from higher-voltage supplies.

🚀 Getting Started

Setting up the EM15-50S0903P is straightforward:

1. Confirm your input source is within the 15-50V DC range.
2. Connect the input wires (red positive and black negative) to your power source.
3. Connect the output wires (yellow positive and black negative) to your 9V load.
4. Power on and verify the output reads approximately 9V DC with a multimeter before connecting sensitive electronics.

Sold and supported by Envistia Mall. Ships from the USA. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.