3-Phase Rotation Tester with Digital Display, LED Indicator, and Buzzer for Phase Sequence Detection

The SM852B 3-Phase Rotation Tester is a digital phase indicator and detector designed to verify phase sequence and detect open-phase conditions. It features LED and buzzer indicators for clear visual and audible feedback. The device supports a voltage range of 60V to 600V AC, three-phase, with a frequency range of 20Hz to 400Hz. It includes insulated test clips for secure connection to control panel terminals. The tester provides green LED indication with intermittent beep for correct phase rotation and red LED indication with continuous beep for reverse phase rotation. It has an impulse voltage rating of 4000V and a maximum withstand voltage of 2000V per minute. Continuous operation time is rated up to 60 minutes at 60V AC and up to 4 minutes at 600V AC. Constructed from durable plastic and metal, the unit is compact and lightweight, measuring 85 × 64 × 23 mm (3.3 × 2.5 × 0.9 in) and weighing 120 g (4.2 oz). Package dimensions are 120 × 100 × 50 mm (4.7 × 3.9 × 2.0 in), with a package weight of 200 g (7.1 oz). Includes: 1 × Phase Sequence Indicator. Key Features: – Verifies phase sequence and detects open-phase conditions – Voltage range: 60V–600V AC, three-phase – LED and buzzer indication – Compact, portable design – Insulated test clips for safe terminal connection – Visual phase sequence indication (green/red LED with corresponding beeps) – Dimensions: 85 × 64 × 23 mm – Weight: 120 g