The Fluke 15B+ Digital Multimeter is for those who want dependable accuracy without unnecessary complexity. It delivers reliable performance whether completing quick household checks or diagnosing electrical systems on-site.
The measurement ranges cover up to 1000 V AC/DC and 10 A of current. It also provides functions for resistance, continuity, capacitance, and frequency. The diode test and data hold functions validate circuits and record readings without nuisance.
The CAT III 600 V rating gives peace of mind, and the easy-to-read display reduces the chance of misinterpretation, keeping everything straightforward for both professionals and learners.
Buy a qualifying Fluke Industrial, Fluke Networks or Beha-Amprobe product and earn 1 point for every £1 spent. Redeem points for rewards straight away or save for higher-value gifts.
Offer runs 1 September–31 December 2026. Claims are made through Fluke and offer works in conjuction with our other offers.
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| Function | Range | Resolution | Accuracy |
|---|---|---|---|
| AC volts (40 Hz to 500Hz)1 |
4.000 V 40.00 V 400.0 V 1000 V |
0.001 V 0.01 V 0.1 V 1 V |
1.0% + 3 |
| DC volts | 4.000 V 40.00 V 400.0 V 1000 V |
0.001 V 0.01 V 0.1 V 1 V |
0.5% + 3 |
| AC millivolts | 400.0 mV | 0.1 mV | 3.0% + 3 |
| DC millivolts | 400.0 mV | 0.1 mV | 1.0% + 10 |
| Diode test2 | 2.000 V | 0.001 V | 10% |
| Resistance (Ohms) |
400.0 Ω 4.000 kΩ 40.00 kΩ 400.0 kΩ 4.000 MΩ 40.00 MΩ |
0.1 Ω 0.001 kΩ 0.01 kΩ 0.1 kΩ 0.001 MΩ 0.01 MΩ |
0.5% + 3 0.5% + 2 0.5% + 2 0.5% + 2 0.5% + 2 1.5% + 3 |
| Capacitance3 | 40.00 nF 400.0 nF 4.000 μF 40.00 μF 400.0 μF 1000 μF |
0.01 nF 0.1 nF 0.001 μF 0.01 μF 0.1 μF 1 μF |
2% + 5 2% + 5 5% + 5 5% + 5 5% + 5 5% + 5 |
| AC current μA (40 Hz to 400 Hz) |
400.0 μA 4000 μA |
0.1 μA 1 μA |
1.5% + 3 |
| AC current mA (40 Hz to 400 Hz) |
40.00 mA 400.0 mA |
0.01 mA 0.1 mA |
1.5% + 3 |
| AC current A (40 Hz to 400 Hz) |
4.000 A 10.00 A |
0.001 A 0.01 A |
1.5% + 3 |
| DC current μA | 400.0 μA 4000 μA |
0.1 μA 1 μA |
1.5% + 3 |
| DC current mA | 40.00 mA 400.0 mA |
0.01 mA 0.1 mA |
1.5% + 3 |
| DC current A | 4.000 A 10.00 A |
0.001 A 0.01 A |
1.5% + 3 |
| Backlight | Yes | ||
| 1AC volts are specified from 1% to 100% of the range. Inputs below 1% of the range are not specified. 2Typically, open circuit test voltage is 2.0 V and short circuit current is <0.6 mA. 3. Specifications do not include errors due to test lead capacitance and capacitance floor (which may be up to 1.5 nF in the 40 nF range). |
|||
| Function | Overload Protection | Input Impedance (Nominal) | Common Mode Rejection Ratio | Normal Mode Rejection Ratio |
|---|---|---|---|---|
| AC volts | 1000 V 1 | >10 MΩ <100 pF | >60 dB at dc, 50 Hz or 60 Hz |
- |
| AC millivolts | 400 mV | >1MΩ, <100 pF | >80 dB at 50 Hz or 60 Hz | - |
| DC volts | 1000 V 1 | >10 MΩ <100 pF | >100 dB at dc, 50 Hz or 60 Hz |
>60 dB at 50 Hz or 60 Hz |
| DC millivolts | 400 mV | >1MΩ, <100 pF | >80 dB at 50 Hz or 60 Hz | - |
| 1 106 V Hz Max | ||||
| General Specifications | |
|---|---|
| Maximum Voltage between any Terminal and Earth Ground | 1000 V |
| Display (LCD) | 4000 counts, updates 3/sec |
| Battery Type | 2 AA, NEDA 15A, IEC LR6 |
| Battery Life | 500 hours minimum |
| Operating Temperature | 0 °C to 40 °C |
| Storage Temperature | -30 °C to 60 °C |
| Operating Humidity (RH) | Non-condensing (<10°C) ≤90% RH at 10 °C to 30 °C; ≤75% RH at 30 °C to 40 °C |
| 40 MΩ range ≤80% RH at 10 °C to 30 °C; ≤70% RH at 30 °C to 40 °C |
|
| Operating Altitude | 2000 m |
| Storage Altitude | 12,000 m |
| Temperature Coefficient | 0.1 X (specified accuracy) /°C (<18 °C or >28 °C) |
| Fuse Protection for Current Inputs | 440 mA, 1000 V Fast Fuse, Fluke specified part only. 11A, 1000V Fast Fuse, Fluke specified part only. |
| Size (H x W x L) | 183 x 91 x 49.5 mm |
| Weight | 455 g |
| IP Rating | IP 40 |
| Safety | IEC 61010-1, IEC61010-2-030 CAT III 600 V, Pollution Degree 2 |
| Electromagnetic Compatibility | IEC 61326-1: Portable EMC Environment |
| Class A equipment (industrial broadcasting & communication equipment)1 1 This product meets requirements for industrial (Class A) electromagnetic wave equipment, and the seller or user should take notice of it. This equipment is intended for use in business environments and is not to be used in homes. |
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