The Kyoritsu 3552 Digital Insulation / Continuity Tester is built for professionals who demand speed, precision, and reliability in electrical testing. With the world’s fastest class measurement speed of just 0.5 seconds, it allows electricians and maintenance teams to perform tests more efficiently, saving valuable time on every job.
In addition, this insulation tester offers six selectable ranges — 50V, 100V, 125V, 250V, 500V, and 1000V — ensuring accurate measurements across a wide variety of electrical systems. Moreover, its versatility makes it ideal for industrial, commercial, and residential applications.
Furthermore, the Kyoritsu 3552 provides a well-rounded lineup of features that fully meet the diverse needs of electrical professionals. As a result, it delivers both insulation resistance and continuity testing in one compact, user-friendly device.
Designed with durability and accuracy in mind, the Kyoritsu 3552 Digital Insulation / Continuity Tester is an essential tool for electricians, inspection engineers, and technicians who value performance and efficiency.
KEW3551 : Standard model
KEW3552 : With memory function
KEW3552BT : With memory and Bluetooth communication functions
Insulation resistance |
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| Test voltage | 50V | 100V | 125V | 250V | 500V | 1000V |
| Measuring range (Auto-ranging) |
100.0MΩ | 200.0MΩ | 250.0MΩ | 500.0MΩ | 20.00GΩ | 40.00GΩ |
| Mid-scale value | 2MΩ | 5MΩ | 5MΩ | 10MΩ | 100MΩ | 200MΩ |
| First effective measuring range | 0.100 to 10.00MΩ | 0.100 to 20.00MΩ | 0.100 to 25.00MΩ | 0.100 to 50.0MΩ | 0.100 to 500MΩ | 0.100 to 1000MΩ |
| Accuracy | ±2%rdg ±2dgt | |||||
| Second effective measuring range | 0.050 to 0.099MΩ 10.01 to 100.0MΩ |
0.050 to 0.099MΩ 20.01 to 200.0MΩ |
0.050 to 0.099MΩ 25.01 to 250.0MΩ |
0.050 to 0.099MΩ 50.1 to 500MΩ |
0.050 to 0.099MΩ 501 to 2000MΩ |
0.050 to 0.099MΩ 1001 to 4000MΩ |
| Accuracy | ±5%rdg (0.050 to 0.099MΩ: ±2%rdg±4dgt) |
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| Rated current | 1.0 to 1.1mA | |||||
| Output short circuit current | 1.5mA max | |||||
Ω / Continuty |
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| Auto-ranging | 40.00/400.0/4000Ω | |||||
| Accuracy | ±2.5%rdg ±8dgt | |||||
| Output voltage on open circuit | 5V(4 to 6.9V) | |||||
| Output short circuit current | 200mA or more | |||||
Voltage |
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| Voltage range | AC 2.0 to 600V(45 to 65Hz) DC -2.0 to -600V +2.0 to +600V |
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| Accuracy | ±1%rdg ±4dgt | |||||
General |
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| Applicable standards | IEC 61010 CAT Ⅲ 600V / CAT Ⅳ 300V, IEC 61010-2-034 IEC61557-1,2,4 IEC61326-1,2-2 IEC60529(IP40) |
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| Power source | LR6/R6(AA)(1.5V)x4 | |||||
| Communication interface | USB | |||||
| Dimension / Weight | 97(L) x 156(W) x 46(D) mm / Approx. 490g(including battery) | |||||
| Accessories | 7260(Test lead with remote control switch) 7261A(Test lead with alligator clip) 8017A(Extension prod long) 9173(Carrying case) 9121(Shoulder strap) LR6(AA)x4 Instruction manual |
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| Optional Accessories | 7243A(L-shaped probe) 8016(Hook type prod) 9186A (Carrying case) 9187 (Cord case) 8212-USB(USB adapter) |
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Please download “KEW Report(software)” from here.
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