Description
Product Summary
The Supco M501 Megohmmeter is a professional-grade replacement part from Supco (Sealed Unit Parts Co.), a trusted name in HVAC/R and appliance parts since 1945. An inexpensive alternative to taut band (swing needle) megohmmeters, the M500 provides fast and accurate measurements to verify the condition of the insulation. Includes the same features as the M500 and installed in a sturdy service case.
Multimeters, megohmmeters, and current probes for diagnosing HVAC/R electrical circuits, motors, and compressors.
Key Features
- Hand held
- Impact resistant
- Measure insulation values up to 1000 megohms @ 1000VAC
- Operates on 2 C batteries (not included)
- Sturdy service case
- Test leads store in case
- Zone scale to indicate insulation condition
Specifications
| Brand | Supco |
|---|---|
| Part Number | M501 |
| Part Type | Meter |
| Measurement/Function | Insulation Resistance |
| Range | 20 to 1000 megohms |
| Temperature Range | 32°F to 120°F (0°C to 50°C) |
| Lead Length (Extended) | 44" |
Cross Reference
The Supco M501 is a direct replacement for the following OEM and competitor part numbers. Always verify ratings and fit against the original part before installing.
| Replaces Part # | Manufacturer | Description |
|---|---|---|
| DMEG3 | UEI® | Megohmmeter |
| 1507 | FLUKE® | Megohmmeter |
| 380260 | EXTECH® | Megohmmeter |
| AMB-45 | Amprobe® | Megohmmeter |
Frequently Asked Questions
Will this work on Scroll compressors?
The M501 sends high voltage spikes (very low amps) through the windings (must be grounded to the case) testing the insulation. It works fine on scroll compressors.
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What's Included
- (1) Supco M501 Megohmmeter
Safety: Always disconnect power and follow lockout/tagout procedures before servicing electrical components. Installation should be performed by a qualified technician.
