Field Instruments

Product Overview

The testo 750-3 Voltage Tester is the top model in the testo 750 series, designed for professional electricians who require maximum functionality, safety, and precision. It combines a large LCD display with the patented all-round LED voltage indicator, ensuring clear voltage indication from any angle.

In addition to standard voltage and continuity testing, the 750-3 offers frequency measurement, single-pole phase testing, rotating magnetic field detection, and RCD testing, making it ideal for commissioning, troubleshooting, and advanced electrical diagnostics. Built according to EN 61243-3:2014, it meets the latest safety standards for professional voltage testers.

Key Features

• LCD Display + 360° LED Indicator – Clear numeric and visual voltage display
• Voltage Testing 12 – 690 V AC/DC
• Frequency Measurement
• Single-Pole Phase Testing
• Continuity Testing (< 500 kΩ)
• Rotating Magnetic Field Detection
• Integrated RCD Test Button
• Vibration & Acoustic Signal – Clear indication in noisy environments
• CAT IV 600 V / CAT III 690 V Safety Rating
• IP64 Protection Class – Dust and splash resistant

Technical Specifications

Manufacturer: Testo
Model: 750-3
Type: Two-Pole Voltage Tester with LCD

Measurement Functions

Voltage Testing
• Range: 12 to 690 V AC/DC

Frequency Measurement
• Range: 0 to 400 Hz

Continuity Testing
• < 500 kΩ

Rotating Magnetic Field Testing
• 170 to 690 V phase-to-phase at 50/60 Hz

RCD Test
• Integrated RCD triggering function

Display & Operation

• Large LCD voltage display
• Patented 360° LED voltage indication
• Automatic AC/DC detection
• Vibration and acoustic feedback
• Robust, ergonomic housing with anti-slip ring

Safety & Standards

• Measurement category: CAT IV 600 V / CAT III 690 V
• Protection class: IP64
• Standard: EN 61243-3:2014
• Additional standards: EN 61326-1, EN 61010-1
• Approvals: TÜV, CSA, CE

Operating Conditions

• Operating temperature: –10 to +50 °C
• Storage temperature: –15 to +60 °C
• Dimensions (L × W × H): 270 × 65 × 35 mm
• Weight: Approx. 250 g

Scope of Supply

• testo 750-3 Voltage Tester
• Batteries
• Measuring tip protector
• Measuring tip caps
• Order No.: 0590 7503

Applications

• Voltage presence testing
• Electrical installation and commissioning
• Phase sequence and rotating field testing
• RCD verification
• Frequency measurement in power systems
• Industrial and commercial maintenance

Why Buy from FieldInstruments.lk?

• 100% genuine Testo instruments
• Competitive pricing with fast island-wide delivery
• Trusted supplier for professional electrical test equipment
• Expert local technical support and after-sales service

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk