Phase tester Bosch SL3 single-phase and rotating field tester, model 1600A02ND8

Bosch SL3 single-phase and rotating field tester (model 1600A02ND8) is a handheld instrument for detecting presence of phase voltage in single-phase systems and determining the direction of rotation in three-phase installations. The tool is intended for quick on-site verification of live conductors and for checking rotating field direction when connecting motors or diagnosing motor wiring. Its compact design and clear indication help streamline routine electrical checks during installation and maintenance.

Advantages

The tester provides rapid detection of live conductors without disassembly, enabling faster troubleshooting and safer work on electrical systems. It offers a simple, intuitive response for rotating field direction, assists in verifying correct motor phase sequence, and fits comfortably in a technician's hand for repeated use. The device is designed for field use and contributes to reducing diagnostic time while supporting compliance with standard electrical practices.

Suitable for

• Identifying presence of phase voltage in single-phase installations
• Checking phase sequence and rotating field direction in three-phase motor connections
• Routine verification during electrical installation and preventive maintenance
• On-site troubleshooting of suspected wiring errors in motors and control panels

Key specifications

• Handheld, compact form factor for easy handling and portability
• Designed for single-phase voltage detection and rotating field direction indication
• Visible and/or audible indication for quick interpretation on site
• Suitable for use on standard low-voltage electrical installations and motor connections
• Robust construction for workshop and field environments

How to use

Before use, ensure the tester is intact and follow standard safety procedures: switch off power where possible and use appropriate personal protective equipment. For single-phase checks, place the probe or contact point on the conductor or terminal under test and interpret the tester indication to confirm presence of phase voltage. For rotating field checks, connect the device according to the manufacturer's instructions to the motor terminals or phase conductors; observe the direction indication to determine the rotation sequence. If indicators show an unexpected result, de-energize the circuit and re-check wiring connections before restoring power.

Usage recommendations

Use the tester only on installations and voltage ranges specified by the manufacturer, keep the device clean and stored in a dry place, and inspect the probe and insulation before each use. When testing rotating fields, verify results with established procedures and, if necessary, with additional measurement instruments.