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  • Fluke PQ400

Fluke PQ400 Electrical Measurement Window

fluke Approved distributor

lead time  Lead Time Approx. 7-14 Days.

Includes: PQ400 enclosure, 4 x male-male cable 2m for connection of Fluke-17xx iFlex® current probes, Cable marker set 3P+N+PE, Cable ties, Instruction sheet.

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The Fluke PQ400 Electrical Measurement Window enables the connection of three phase measurement equipment to energised panels, without the need to open the panel door, or wear supplemental personal protective equipment (PPE). The PQ400 gives you access to the critical power quality and energy data you need, all while decreasing testing time and helping you to maintain safety.

Standard 4mm safety sockets on the front provides access to the three phases (A/L1, B/L2, C/L3), Neutral N, and Earth/Ground for voltage measurements. The voltage outputs support instruments that are powered from the measurement line with a maximum power of 100 VA. The PQ400 supports current measurement with Fluke intelligent current sensors (iFlex1500-12, iFlex 3000-24, i40S-EL and i400S-EL).

The 354x FC, 173x Power, and 174x Power Quality Loggers automatically read the sensor information, such as, the type, serial number, scale factor, and phase angle compensation. Use the optional adapter kit to connect instruments and current sensors that have BNC connectors.


Permanently connected voltage and current sensors located inside the electrical panel.
Voltage and current connections for three-phase voltages, neutral and ground cover most measurement scenarios.
Automatic probe detection for Fluke 1740 and 1730 series power quality and energy loggers and compatible clamps.
Full 360 degree rotation allows the PQ400 window to be oriented in any direction.
Simple installation using a step drill bit and electro-hydraulic hole punch (114.3 mm, 4.5 inch diameter).
CAT IV, 600V and CATIII 1,000V rating according to IEC61010-2-30.
Compatibility with standard 4mm shrouded safety-socket voltage test leads.

Fluke PQ400 Three Phase Electrical Measurement Window Product Video

Fluke PQ400 Power Quality Window Specifications
General specifications
Maximum voltage between any voltage
terminal and earth ground
1000 V.
Maximum voltage between any current
terminal and earth ground
30 V.
General IEC 61010-1: pollution degree 2.
Measurement IEC 61010-2-030: CAT IV 600 V / CAT III 1000 V.
Outside 148 mm x 187 mm x 23 mm (W x H x D) (148 mm x 370 mm x 19 mm with cover opened).
Inside 140 mm x 158 mm x Di (W x H x D)
Di = 58 – thickness of panel door in mm.
Supported electrical enclosures
Enclosure UL 50/NEMA environmental type 1 (Type 12 when PQ400 cover is closed).
Panel thickness Max. 3.5 mm (10 gauge).
Operating/storage temperature -25 °C to 60 °C (-13 °F to 140 °F).
Humidity 10 % to 90 % in dependency of temperature according to IEC 60721-3-3 Class 3K6 (modified):-25 °C to 35 °C: 10 %
to 90 %, 50°C: max. 35 %, 60°C: max. 23 %.
Operating 2,000 m (up to 4000 m derate to CAT II 1000 V, CAT III 600 V, CAT IV 300 V).
Storage 12,000 m.
Ingress protection
Rating IEC 60529: IP67 with cover closed, IP50 with cover opened and all connectors attached.
Vibration IEC 60068-2-6 , MIL-PRF28800F: Random vibration class 2.
Weight 2.1 kg (4.6 lb).
Number of inputs 5 (A/L1, B/L2, C/L3, N, and earth/ground).
Wire gauge Solid/flexible: 0.25 mm2 to 1.5 mm2 (AWG 24 to AWG 16).
Voltage Max. 1000 V.
Fuse 2 A 1000 V 1.5 A²s, 10 kA IR (A/L1, B/L2, C/L3, N).
Connectors 5x 4 mm safety terminals, 3x red for A/L1, B/L2, C/L3, 1x black for N, 1x green for earth/ground.
Load current Max. 1 A rms.
Connectors 5x 4-pin circular compatible with Fluke 354x FC, 173x, and 174x power and power quality loggers (these loggers
can all be power from the measured voltage up to 500V).


Fluke PQ400 Datasheet

PDF specifications of the Fluke PQ400 electrical measurement inspection window.

Download (1.14M)

Fluke PQ400 Instructions

PDF instruction sheet for the Fluke PQ400.

Download (1.27M)

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Fluke PQ400 Electrical Measurement Window
Cable FLUKE-17XX IFLEX Male-Male Cable 2M, 4PCS. I17XX-FLEX2M-M2M4P
Cable FLUKE-17XX IFLEX Male-Male Cable 2M, 1PCS. I17XX-FLEX2M-M2M1P
Marker Set Cable Marker Set 3P+N+PE. FLUKE-PQ-MARKER
Cable FLUKE-17XX 4PIN Male To BNC Male Cable 2M (1X). I17XX-BNC-M2M
Cable FLUKE-17XX 4PIN Male To BNC Female Cable 0.1M (1X). I17XX-BNC-M2M

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