The HGV3 motor protection circuit breaker (also called a motor air switch) is designed for 3‑phase motors. It provides overload, phase loss, and short‑circuit protection, supports infrequent motor starting, and works with AC voltages up to 690V and currents from 0.1A to 80A. Compliant with international standards, it also functions as an isolator for electrical line protection and load transfer.
Ideal for motor control centers (MCCs), industrial automation panels, agricultural machinery, HVAC systems, and pumping stations, the HGV3 series delivers reliable protection in harsh environments with its robust thermal‑magnetic trip mechanism.
Normal Operating & Installation Conditions
- Ambient temperature: -5°C to +40°C (24‑hour average not exceeding +35°C).
- Altitude: ≤ 2000m.
- Relative humidity: ≤ 50% at +40°C; higher RH allowed at lower temperatures (no condensation).
- Pollution degree: Level 3.
- Installation category: Category III.
- Mounting position: Up to ±5° from vertical.
- Vibration & shock: Install in locations free from significant shaking, shock, and vibration.
- Wire size: Refer to terminal capacity (screw type, suitable for copper conductors).
Quality & Compliance
- IEC 60947‑2 / IEC 60947‑4‑1 compliant — meets international standards for circuit breakers and motor starters.
- Thermal‑magnetic trip technology — precise overload protection and instantaneous short‑circuit response.
- Phase loss detection — protects 3‑phase motors from single‑phasing damage, extending motor life.
- Isolating function — safe load transfer and maintenance isolation, certified to isolation requirements.
- Compact design — saves panel space with modular width and flexible mounting options.
- CE marked — safe for distribution in European and international markets.
- Manufactured under ISO 9001:2015 quality management system.
