The Kyoritsu 3552BT is a compact insulation resistance tester designed for everyday electrical testing and maintenance work. Suitable for electricians, contractors, maintenance technicians, and industrial users, it provides quick and reliable insulation testing for cables, switchboards, motors, and electrical installations.
The tester offers insulation resistance measurements at 250V, 500V and 1000V, along with continuity and voltage testing functions. Built-in Bluetooth connectivity allows test results to be transferred directly to a smartphone or tablet, making it easier to store records and generate reports without manual data entry.
A large backlit display, simple rotary selector, and lightweight design make the 3552BT easy to use in the field. Safety features including live circuit detection and automatic discharge help ensure safe operation during testing.
| Specification | ||||||
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Insulation resistance
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| Test voltage | 50V | 100V | 125V | 250V | 500V | 1000V |
| Measuring range | 100.0MΩ | 200.0MΩ | 250.0MΩ | 500.0MΩ | 20.00GΩ | 40.00GΩ |
| (Auto-ranging) | ||||||
| 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 | 0.050 to 0.099MΩ | 0.050 to 0.099MΩ | 0.050 to 0.099MΩ | 0.050 to 0.099MΩ | 0.050 to 0.099MΩ |
| 10.01 to 100.0MΩ | 20.01 to 200.0MΩ | 25.01 to 250.0MΩ | 50.1 to 500MΩ | 501 to 2000MΩ | 1001 to 4000MΩ | |
| Accuracy | ±5%rdg | |||||
| (0.050 to 0.099MΩ: ±2%rdg±4dgt) | ||||||
| Rated current | 1.0 to 1.1mA | |||||
| Output short circuit current | 1.5mA max | |||||
| Ω / Continuty | ||||||
| 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 max | |||||
| Voltage | ||||||
| Voltage range | AC 2.0 to 600V（45 to 65Hz） | |||||
| DC -2.0 to -600V +2.0 to +600V | ||||||
| Accuracy | ±1%rdg ±4dgt | |||||
| General | ||||||
| Applicable standards | IEC 61010 CAT Ⅲ 600V / CAT Ⅳ 300V, IEC 61010-2-034 | |||||
| IEC61557-1,2,4 IEC61326-1,2-2 IEC60529（IP40） | ||||||
| Power source | LR6/R6（AA）（1.5V）x4 | |||||
| Communication interface | USB , Bluetooth®5.0 | |||||
| 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）（1.5V）x4 | ||||||
| Instruction manual | ||||||