Hioki IR4056

Data records

• The manufacturer's page for the IR4056 was read on the date given in the value. Value: 2026-10-27. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.checked
• Hioki lists the IR4056 as a digital insulation tester with five test voltage ranges, sold under the order codes IR4056-20 and IR4056-21. Value: insulation resistance tester. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.class
• The IR4056 compares measured values with preset reference values and signals a pass or fail result by a beeper, the display light and a lamp on the remote-switch test lead when that lead is used. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.function.comparator
• The IR4056 checks the continuity of ground wiring with a low resistance measurement range. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.function.continuity-check
• The IR4056 measures insulation resistance at one of five selectable DC test voltages and shows the reading on a digital display with a bar graph. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.function.insulation-resistance
• The IR4056 has a live circuit indicator, an automatic electric discharge function and an automatic power-save function. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.function.safety-functions
• The IR4056 has a built-in AC and DC voltmeter with automatic detection of the voltage type. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.function.voltage-measurement
• The IR4056 is a product of Hioki. Value: Hioki. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.manufacturer
• The manufacturer gives the model designation as IR4056. Value: IR4056. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.model
• Hioki maintains a product page for the IR4056 on its own website, which is the page cited for this entry. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.product-page
• The manufacturer states the AC voltage measurement ranges and accuracy of the IR4056. Value: 420 V (0.1 V resolution) / 600 V (1 V resolution), 2 ranges, 50/60 Hz, ±2.3 % rdg. ±8 dgt.. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.ac-voltage-range
• The manufacturer states the DC voltage measurement ranges and accuracy of the IR4056. Value: 4.2 V (0.001 V resolution) to 600 V (1 V resolution), 4 ranges, ±1.3 % rdg. ±4 dgt.. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.dc-voltage-range
• The manufacturer states the dimensions and mass of the IR4056 including batteries and excluding test leads. Value: 159 mm W x 177 mm H x 53 mm D, 600 g. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.dimensions-and-mass
• The manufacturer states the accuracy of the IR4056 in the first effective measuring range of each test voltage. Value: ±2 % rdg. ±2 dgt.. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.insulation-accuracy
• The manufacturer states the low resistance ranges, resolution and test current of the continuity function of the IR4056. Value: 10 Ω (0.01 Ω resolution) to 1000 Ω (1 Ω resolution), 3 ranges, testing current 200 mA or more at 6 Ω or less. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.low-resistance-range
• The manufacturer states the effective maximum indicated insulation resistance of the IR4056 at its lowest and highest test voltages. Value: 100 MΩ at 50 V to 4000 MΩ at 1000 V. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.maximum-indicated-resistance
• The manufacturer states the measurement category rating of the IR4056. Value: CAT III 600 V. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.measurement-category
• The manufacturer states the battery type and continuous operating time of the IR4056. Value: LR6 (AA) alkaline batteries x4, continuous use 20 hours (comparator off, backlight off, 500 V range, no load). Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.power-supply
• The manufacturer states the five rated DC output voltages of the IR4056. Value: 50 V, 125 V, 250 V, 500 V, 1000 V DC. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.rated-output-voltages
• The manufacturer states the approximate response time of the IR4056 for a pass or fail decision, based on in-house testing. Value: 0.8 s. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.spec.response-time
• The product page names IEC 60364 as the standard that defines the resistance measurement of safety conductors in building electrical equipment that the continuity function of the IR4056 performs; the page gives no edition. Value: IEC 60364. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.standard.iec-60364
• The catalog name of the model is written Hioki IR4056. Value: Hioki IR4056. Source: Hioki product page, web page edition. Verified 2026-10-27. Record prod.hioki-ir4056.title