Agilent/Keysight U5403A

The U5403A is a remote test probe accessory engineered to extend the measurement capabilities of Keysight U1450A and U1460A handheld insulation resistance testers. It delivers enhanced connectivity and remote operation flexibility, enabling technicians to perform insulation resistance measurements across demanding field environments with greater reach and operational efficiency.

Technical Specifications

• Probe Length: 1.1 meters


• Probe Tips: 19 mm and 4 mm


• Safety Rating: CAT III 1000 V / CAT IV 600 V


• Included Components: Test leads with dual-tip probe configuration

Key Features

• Dual probe tip geometry (19 mm and 4 mm) accommodates varied measurement points and terminal sizes


• 1.1-meter cable length provides extended reach for remote testing scenarios


• CAT III 1000 V / CAT IV 600 V rating ensures safe operation across utility and industrial voltage environments


• Direct integration with U1450A/U1460A series instruments without additional adapters

Typical Applications

• Motor winding and cable insulation validation


• Preventive maintenance testing on electrical equipment


• Field diagnostics requiring extended probe reach


• Multi-point insulation resistance surveys on installed systems

Compatibility & Integration The U5403A connects directly to Keysight U1450A and U1460A insulation resistance testers. It also integrates with the U1117A IR-to-Bluetooth adapter and U1173B IR-USB cable, enabling wireless measurement transfer to Windows PCs and iOS/Android mobile devices for remote data logging and analysis.