Fluke 4566209 PRV240 Proving Unit with Magnetic Hanging Strap

The Fluke PRV240 Proving Unit is a compact, pocket-sized, battery-powered voltage source designed to help electricians and technicians safely verify that their electrical test tools are functioning properly before and after live measurements. Compatible with both high-impedance (HiZ) and low-impedance (LoZ) instruments, the PRV240 sources stable 240V AC and DC steady-state voltage, eliminating the need for multiple verification tools or exposure to a known high-energy live source.

The PRV240 supports the "Test Before Touch" (TBT) three-point verification method — a safety protocol now required by GS38 and NFPA 70E work practices. This sequence verifies that your test tool is operating correctly through the entire measurement process, reducing the risk of shock and arc flash in potentially hazardous electrical environments.

Key Features:

• Sources 240V AC and DC steady-state voltage for both HiZ and LoZ instruments
• Compatible with high-impedance and low-impedance multimeters, clamp meters, and two-pole testers
• Recessed contacts activate only when test probes are inserted, preventing accidental contact
• Single LED indicator confirms voltage output and unit functionality
• Includes TPAK magnetic hanging strap for hands-free, convenient operation
• Reduces the need for PPE during test tool verification
• Rated to IEC61010-1 and IEC61010-2-030 safety standards
• EMC rated to IEC 61326-1; certified CSA-CUS and CE
• One-year warranty

Specifications:

• Output Voltage: 240V AC rms or DC (±10%, ≥1 MΩ); 60V AC typical / 50V AC rms minimum (LoZ >3 kΩ load)
• Battery: 4 × AA Alkaline (NEDA 24A / IEC LR03)
• Battery Life: 5,000 tests (5-sec, HiZ); 300 tests minimum (LoZ)
• Operating Temperature: -10°C to +50°C
• Operating Humidity: 0–90% (0–35°C); 0–70% (35–55°C)
• Operating Altitude: 2,000 m
• Dimensions: 4.6 in × 2.9 in × 1.1 in (11.7 cm × 7.4 cm × 2.8 cm)
• Weight: 0.5 lb / 8 oz (includes batteries)
• Pollution Degree 2

The Fluke PRV240 is an essential safety tool for any electrician or field technician working in environments where verifying the integrity of their test instruments is critical. Its rugged, portable design and long battery life make it a reliable addition to any professional toolbox.