Fluke 1503

Fluke 1503 – Compact Insulation Tester

Overview

The Fluke 1503 is a rugged and compact insulation resistance tester suited for industrial, commercial and maintenance use. It supports high voltage insulation tests at 500 V and 1000 V, live-circuit detection to prevent unsafe testing, auto discharge for capacitive loads, and remote probe capability for hard-to-reach areas. It meets strong safety ratings and is designed for durability and reliability in harsh environments.

Key Features

• Insulation test voltages of 500 V and 1000 V for measuring insulation resistance

• Insulation resistance range from 0.01 MΩ up to 2000 MΩ

• Live circuit detection inhibits test if terminal voltage above ~30 V is present

• Auto discharge of capacitive voltage for safety

• Remote probe included for testing in hard or repetitive test locations

• Overload protection up to 600 V AC or DC on any terminal

• Large backlit display for easy reading in low light

• Battery powered (four AA batteries) for field portability

• Rugged design: vibration, shock, IP40 rated

Technical Specifications

• Model: 1503

• Insulation Resistance Range: 0.01 MΩ to 2000 MΩ

• Test Voltages: 500 V DC, 1000 V DC

• Insulation Test Voltage Accuracy: +20 % / −0 %

• Short-Circuit Current (at insulation test): ~1 mA nominal

• Maximum Capacitive Load: operates properly up to ~1 µF

• Maximum Terminal Voltage Rated: 600 V AC rms or DC

• Operating Temperature: −20 °C to +55 °C

• Storage Temperature: −40 °C to +60 °C

• Relative Humidity:
   - 0 to 95% at 10-30 °C
   - 0 to 75% at 30-40 °C
   - 0 to 40% at 40-55 °C

• Size (H × W × D): approximately 5.0 × 10.0 × 20.3 cm

• Weight: ~550 g

Applications

• Checking insulation integrity on motors, cables, switchgear

• Preventive maintenance to detect worn or failing insulation early

• Testing insulation after installation or repairs

• Field use where safety features like live-circuit detection and auto-discharge are important

Why Choose the Fluke 1503

• High test voltages with wide resistance range for many insulation challenges

• Strong safety protections to protect user and equipment

• Remote probe and rugged build make it efficient in field work

Order Now

The Fluke 1503 is part of Fluke’s insulation tester family. Available for purchase. Ships worldwide.

Original Manufacturer Packaging

These products are industrial surplus items preserved in the original manufacturer box. Learn More

DDPARTSSOLUTION Packaging

These products are industrial surplus items shipped in secure DDPARTSSOLUTION protective packaging. Learn More

Refurbished

These products have been previously installed or may show cosmetic signs of prior handling. Learn More