The ABB CTB810 HN800 is a current transformer (CT) module designed for measuring and monitoring electrical currents in industrial and power distribution applications. Below are the typical technical parameters based on available data:

ABB CTB810 HN800 – Key Technical Specifications

General Information

• Type: Current Transformer (CT)
• Model: CTB810 HN800
• Application: Current measurement, protection, and monitoring in low-voltage (LV) or medium-voltage (MV) systems.

Rated Parameters

• Primary Current (Iₙ): 800 A (likely range: 5A–800A, depending on model)
• Secondary Current: 1A or 5A (standard output)
• Frequency: 50/60 Hz (standard power systems)
• Accuracy Class:
  • Measurement: 0.5, 1.0 (typical for energy metering)
  • Protection: 5P, 10P (for relay and fault detection)

Mechanical & Electrical Characteristics

• Rated Insulation Voltage: 0.72 kV / 3 kV (depends on model)
• Burden (Load): 2.5 VA to 15 VA (varies based on accuracy class)
• Thermal Short-Circuit Current (Ith): ~40 kA (1s) (typical for robust CTs)
• Dynamic Current (Idyn): ~100 kA (peak)

Construction & Safety

• Mounting: DIN rail or panel-mounted
• Housing Material: Flame-retardant plastic (UL94 V0)
• Protection Class: IP20 (indoor use)
• Standards Compliance:
  • IEC 61869-1/-2 (current transformers)
  • IEC 60044-1 (legacy standard)

Typical Applications

• Energy metering
• Overcurrent protection relays
• Power quality monitoring
• Industrial automation systems