Product Overview
● The TGWD Universal Circuit Breaker (hereinafter referred to as the "circuit breaker") is suitable for AC 50Hz distribution networks with rated operational voltages up to AC690V and rated operational currents up to 6300A. It distributes electrical energy and protects circuits and power equipment from overload, undervoltage, short-circuit, single-phase grounding, and other faults. Equipped with intelligent protection functions, it ensures precise selective protection, improves power supply reliability, and avoids unnecessary outages.
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Compliance Standards:
GB/T 14048.2,
IEC 60947-2.
Normal Operating & Installation Conditions
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Ambient Temperature:
- Upper limit: +40°C; Lower limit: -5°C; 24-hour average ≤ +35°C.
- Note 1: For lower limits of -10°C or -25°C, users must notify the manufacturer during ordering.
- Note 2: For conditions exceeding +40°C or below -10°C/-25°C, consult the manufacturer.
● Altitude: ≤ 2000m.
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Atmospheric Conditions:
- Relative humidity ≤ 50% at +40°C ambient temperature.
- Higher humidity is permissible at lower temperatures.
- The monthly average maximum relative humidity of the wettest month is 90%, with a monthly average minimum temperature of +25°C. Surface condensation due to temperature fluctuations must be considered.
● Pollution Degree: Level 3.
● Utilization Category: B.
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Installation Category:
- Main Circuit: Category IV.
- Auxiliary Circuits:
- For main circuits rated ≤AC400V: Category III, except for undervoltage release coils and the primary coils of the electronic trip unit’s power transformer (match main circuit category).
- For main circuits rated >AC400V to ≤AC690V: Auxiliary circuits must be isolated via an isolation transformer (capacity ≥5kVA). The control circuit’s maximum operational voltage is AC400V, and all auxiliary circuits are Category III.
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Installation Requirements:
- Install according to the manufacturer’s manual.
- Vertical tilt angle ≤ 5°.