Sharman PS-1335 30A High-Efficiency 13.8V DC Power Supply with Backup Battery Support

The Sharman PS-1335 is a compact, high-efficiency 13.8V DC power supply designed for demanding radio communications and electronic applications. Lightweight yet powerful, the PS-1335 delivers 30 amps of continuous output and is engineered for exceptional RF quietness—making it ideal for use in environments sensitive to radio frequency interference (RFI).

Whether you’re operating amateur radio gear, repeaters, base stations, or DC-powered electronics, the PS-1335 provides stable, low-noise power with robust safety features and optional automatic battery backup switching.

⚙️ Key Features of the Sharman PS-1335:

• ✅ Fixed Output Voltage:
  Regulated 13.8V DC output (nominal 12V), ideal for radio and communications equipment.

• ✅ High Output Capacity:
  Delivers up to 30 amps (max) continuous current, perfect for high-demand devices.

• ✅ Ultra Quiet Operation:
  Designed to be very low noise and RF quiet, even in close-range or sensitive RF setups.

• ✅ Advanced Protection Circuitry:
  Built-in over-voltage and over-current protection ensures safe and reliable performance under all conditions.

• ✅ Compact & Lightweight:
  At just 1.52 kg and compact in size, it’s easy to integrate into any shack or mobile setup.

🔋 Backup Battery Integration with Automatic Switchover:

Add a 12V lead-acid or sealed gel battery for emergency backup:

• Charges the battery while on mains power.

• In the event of mains failure, a fast relay automatically switches to battery power—seamlessly keeping your equipment running.

• Battery protected by a 30A fuse.

This makes the Sharman PS-1335 an excellent choice for mission-critical communications systems, where uninterrupted power is essential.

📏 Specifications:

• Input Voltage: 230V AC / 50Hz

• Output Voltage: Fixed 13.8V DC

• Output Current: 30A (maximum)

• Protection:

  • Over-voltage protection

  • Over-current protection

• Battery Support: Yes (external battery, 30A fused)

• Dimensions: 181 x 63 x 190 mm

• Weight: 1.52 kg

✅ Why Choose the Sharman PS-1335 Power Supply?

The Sharman PS-1335 combines high power output, excellent RFI immunity, and smart backup capability in one compact package. It’s perfect for amateur radio operators, emergency setups, and any application where stable, reliable, and quiet DC power is essential.

With its built-in protection, low-noise operation, and optional battery failover support, the PS-1335 ensures your equipment stays powered—no matter what.

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