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MASTECH MS5911 PAT Tester
The MS5911 is a compact, easy-to-use portable appliance tester designed to verify the electrical safety of Class I and Class II appliances. It provides essential safety checks including grounding performance, insulation resistance, leakage current, polarity, and power socket testing.
Equipped with auto power-off, data logging, backlight, and compliance with CE, RoHS, and ETL certifications, the MS5911 is suitable for both professional and routine appliance safety inspections. Two model types are available: MS5911A (USA) and MS5911D (EU).
Function
• Safety testing for Class I and Class II appliances
• Grounding performance measurement
• Insulation resistance testing (250 V / 500 V DC)
• Leakage current measurement
• Cord testing – ground, insulation resistance, leakage current
• Polarity test and AC socket test (110 V / 230 V ±15 %)
• Auto power-off with backlight display
• Data logging for up to 300 test groups
• Low battery detection
Technical Specifications
insulation resistance
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Test voltage: 250 V DC / 500 V DC
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Test current: > 1 mA (R = 250 kΩ / 500 kΩ)
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Test time: 5 s
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Range: 0.2 MΩ ~ 19.99 MΩ
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Accuracy: ±(5 % + 3 digits)
grounding performance
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Test current: > 200 mA (R < 2 Ω)
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Test voltage: 5 V DC
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Test time: 5 s
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Range: 0 Ω ~ 19.99 Ω
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Accuracy: ±(5 % + 3 digits)
leakage current
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Test voltage: 50 V rms / 50 Hz
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Test time: 5 s
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Range: 0.10 mA ~ 10.50 mA
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Accuracy: ±(5 % + 3 digits)
safety rating
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CAT II 300 V
data logging
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Stores up to 300 groups
power socket test
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AC 110 V / 230 V ±15 %
certification
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CE, RoHS, ETL
Key Features
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Tests Class I and Class II appliances
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Polarity and cord testing functions
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High-accuracy insulation resistance and leakage current measurement
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Compact and lightweight design
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Auto power-off with backlit display
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Data logging up to 300 records
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Available in USA (MS5911A) and EU (MS5911D) versions
Standard Accessories
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MS5911 tester unit (USA or EU type)
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Test leads set
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Power cord
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Instruction manual
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Carrying case