ROD-L Electronics M25 25 Amp Ground Continuity Tester 0-0.15 Ohm 6310-3

ROD-L Electronics M25 25 Amp Ground Continuity Tester 0-0.15 Ohm 6310-3

The ROD-L Electronics M25 is a benchtop 25-amp ground continuity tester designed to verify the integrity of protective earth ground connections in electrical equipment. It applies a high AC test current through the device under test and measures the resulting resistance across the ground path, confirming that the bond is low enough to provide effective fault protection. The M25 features two front-panel analog meters — one for ground test current and one for ground resistance — along with a three-LED Test Status display (Ready / Testing / Fail) for clear pass/fail indication.

Specifications & What's Included

• Manufacturer: ROD-L Electronics, Inc.
• Model: M25
• Part Number: 6310-3
• Test Current: 25 Amps AC
• Resistance Measurement Range: 0 – 0.15 Ohms
• Test Period: Adjustable, 1 to 90 seconds
• Test Status Indicators: Ready, Testing, Fail (front-panel LEDs)
• Ground Test Current Meter: Front-panel analog meter, Amperes AC scale
• Ground Resistance Meter: Front-panel analog meter, 0–0.15 Ohms scale
• Controls: Line Power On toggle, Start button, Reset button, GND/Hi Pot selector switch
• Test Output: Standard AC outlet on front panel — HIGH VOLTAGE during test (clearly labeled)
• Chassis Ground: Banana jack on front panel
• Form Factor: Benchtop enclosure with carry handles
• Country of Manufacture: USA (Made in USA label on unit)
• Condition: Used — see condition notes below

Applications

Ground continuity testers like the ROD-L Electronics M25 are used to verify that the protective earth ground conductor in electrical equipment meets safety standards — typically required under UL, IEC 60950, IEC 62368, and similar product safety specifications. By passing 25 amps through the ground path and measuring the resulting resistance, the tester confirms the bond is below the threshold that standards allow (commonly 0.1 Ohm for many product categories). These instruments are standard tools in electrical safety compliance labs, production test floors, and calibration facilities, where every unit off the line must be verified before shipment. The M25 is also used by engineers performing design validation on new products, confirming that chassis, enclosure panels, and internal ground wires are properly bonded. Its adjustable test period (1–90 seconds) accommodates both quick production screening and longer endurance tests. Equipment of this type remains in active use wherever UL, ETL, or CE safety testing is performed on electrical products.