Fluke 1503 Insulation Tester, 500 V Min, 1000 V Max, 2000 mΩ CAT IV, CAT III

RS Stock No.:: 518-5998
Distrelec Article No.:: 176-46-458
Mfr. Part No.:: FLUKE 1503
Brand:: Fluke

Fluke 1503 Insulation Tester, 500 V Min, 1000 V Max, 2000 mΩ CAT IV, CAT III

Subtotal (1 unit)*

$1,375.33

(exc. GST)

$1,581.63

(inc. GST)

Spend over $80.00 ex GST for FREE delivery

Temporarily out of stock

Shipping from 12 October 2026

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Units	Per unit
1 +	$1,375.33

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

RS PRO RS5500 Insulation Tester, 250 V Min, 1000 V Max, 4000 mΩ CAT III

RS Stock No.: 123-1931

Each

$815.41

(exc. GST)

$937.72

(inc. GST)

RS Stock No.:: 518-5998
Distrelec Article No.:: 176-46-458
Mfr. Part No.:: FLUKE 1503
Brand:: Fluke

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Fluke
	Product Type	Insulation Tester
	Model Number	1503
	Tester Type	Insulation Tester
	Maximum Test Voltage	1000V
	Minimum Test Voltage	500V
	Display Type	LCD Backlight
	Test Current	1mA
	Power Source	Battery
	Battery Type	AA
	Minimum Operating Temperature	-20°C
	Insulation Testing Resistance	2000mΩ
	Safety Category Level	CAT IV, CAT III
	Maximum Operating Temperature	+50°C
	Safety Category Voltage	600V
	Standards/Approvals	ANSI, CAN/CSA, EN, IEC, ISA
	Width	100mm
	Height	50mm
	Length	203mm
	Weight	550g

	Select all
	Brand Fluke
	Product Type Insulation Tester
	Model Number 1503
	Tester Type Insulation Tester
	Maximum Test Voltage 1000V
	Minimum Test Voltage 500V
	Display Type LCD Backlight
	Test Current 1mA
	Power Source Battery
	Battery Type AA
	Minimum Operating Temperature -20°C
	Insulation Testing Resistance 2000mΩ
	Safety Category Level CAT IV, CAT III
	Maximum Operating Temperature +50°C
	Safety Category Voltage 600V
	Standards/Approvals ANSI, CAN/CSA, EN, IEC, ISA
	Width 100mm
	Height 50mm
	Length 203mm
	Weight 550g

RoHS Status: Exempt

COO (Country of Origin):: CN

Fluke Insulation Tester, 1000V Maximum Test Voltage, 200mA Test Current - FLUKE 1503

This insulation tester is a battery-powered handheld instrument designed to assess electrical insulation resistance in industrial and field environments. It provides selectable test voltages within a mid-to-high range and displays readings on an illuminated LCD, enabling inspections in varied lighting and temperature conditions.

Features and Benefits:

• 1000V maximum test voltage delivers high-voltage insulation assessments
• 200mA test current enables stable charging of capacitive systems
• 2000MΩ insulation range allows detection of very high resistance
• AA battery power supports simple on-site replacement
• CAT III and CAT IV 600V safety rating permits work on distribution systems

Applications

• Suitable for commissioning electrical distribution equipment
• Ideal for maintenance of motor windings and cables
• Used for verification of insulation after installation
• Can be used for troubleshooting insulation degradation
• Suitable for field testing across temperature extremes

What display features assist reading in low light?

The instrument incorporates an LCD with backlight to improve visibility in dim environments.

What approvals indicate suitability for regulated markets?

It carries ANSI, CAN/CSA, EN, IEC and ISA approvals relevant to safety and performance standards.

What operating temperatures can it tolerate?

It functions across an ambient range from -20°C to 55°C.

How portable is the unit for field use?

The tester measures 203mm in length, is 100mm wide and weighs 550g for handheld portability.

Which safety categories cover use on live systems?

It is rated CATIII and CATIV at 600V for work on distribution and supply-side equipment.

Supplied with

The Fluke 1503 insulation tester comes with:
Remote probe
Test leads
Test probes
Alligator clips
Holster
User documentation