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AC voltage detector HWB-550A 
high-voltagemedium-voltageLED

AC voltage detector - HWB-550A  - Hasegawa Electric Co., Ltd. - high-voltage / medium-voltage / LED
AC voltage detector - HWB-550A  - Hasegawa Electric Co., Ltd. - high-voltage / medium-voltage / LED
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Characteristics

Detected entity
high-voltage, AC voltage, medium-voltage
Technology
LED
Other characteristics
with sounder, waterproof, non-contact, with flashlight

Description

Product category
  • Range of high- and medium-voltage contact and non-contact voltage detectors designed for universal-joint (shared control rod) connection — suited for overhead-line testing and live-line work in industrial and utility applications.


Included models (excerpt)
  • HWB-550A — Non-contact voltage detector (AC) 11 kV–550 kV
  • HST-35V — Audio and LED type voltage detector (AC) 6–35 kV
  • HST-138V — Audio and LED type voltage detector (AC) 66–138 kV
  • HST-550V — Audio and LED type voltage detector (AC) 210–550 kV
  • HWB-35 / HWB-110 / HWB-138 / HWB-550 — Non-contact detectors covering 6 kV to 550 kV ranges
  • HWA-33X / HWA-33P — Contact-type high-voltage detectors with multi-stage indication


Main features and descriptions
  • FRP insulating stick: lightweight for improved operability during live-line inspections.
  • Universal joint connection: allows quick coupling to shared control rods and telescopic poles.
  • Audio signaling and high-luminance LED (HST series): combined buzzer and bright LED clearly indicate presence of voltage in non-contact mode.
  • Multi-step/ multi-stage indication: HWA-33X provides 3-step approach indication; HWA-33P offers 4-stage voltage-level indication with progressive light and sound signals.
  • Interchangeable tips (HWA series): replaceable fittings (hook, straight, Y-shaped, etc.) for different testing scenarios.
  • Wide coverage: models available for nominal detection ranges from approximately 1 kV up to 550 kV.


Specifications (models vs. nominal detection ranges)
  • HWB-550A — 11 kV – 550 kV
  • HST-35V — 6 kV – 35 kV
  • HST-138V — 66 kV – 138 kV
  • HST-550V — 210 kV – 550 kV
  • HWB-35 — 6 kV – 35 kV
  • HWB-110 — 35 kV – 110 kV
  • HWB-138 — 66 kV – 138 kV
  • HWB-550 — 210 kV – 550 kV
  • HWA-33X — 11 kV – 33 kV
  • HWA-33P — 1 kV – 35 kV


Notes
  • Model- and series-specific datasheets and catalogs (PDF) are available for download on product pages; specification images illustrate ratings and detection ranges.
  • Some HWA-series detectors comply with IEC 61243-1 (voltage detector standard); check individual model documentation for certification details.


Technical specifications
  • Insulating stick material: FRP (fiber-reinforced plastic) for reduced weight and high handling performance.
  • Connection: universal joint for compatibility with shared control rods and extension poles.
  • Indication methods: electronic buzzer (audio) and high-luminance LED (visual); multi-step (3-step) and multi-stage (4-stage) indications on selected models.
  • Tip options: interchangeable fittings (hook, straight, Y-shaped, etc.) where applicable.
  • Standards: IEC 61243-1 referenced for specified models — refer to datasheets for exact compliance.
  • Application range: suitable for utility, industrial and maintenance teams performing live-line checks and voltage verification across 1 kV to 550 kV depending on model.

Catalogs

No catalogs are available for this product.

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Voltage Detector

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.