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Home  /  Terminals & Bars  / 

CHINT V9 Undervoltage Release

CHINT V9 Undervoltage Release

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Category: Terminals & Bars
Brand: CHINT
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Description
Shipping & delivery

CHINT V9 Undervoltage Release,
is a safety accessory designe for NB1, NBH8, NB1L, and NBH8LE series miniature circuit breakers and RCBOs.
It provides reliable load protection during voltage drops,
automatically tripping the breaker when voltage falls below 35% of the rated value.
Operating at AC 230V 50/60Hz, the V9 ensures positive safety, rapid fault response,
and mechanical durability exceeding 4000 cycles. Easy to install on the left side of MCBs/RCBOs, it’s ideal for residential,
commercial, and industrial power systems.

  • Function: Protects load by tripping breaker when supply voltage drops below 35% of rated value
  • Compatible Devices: NB1, NBH8, NB1L, NBH8LE series MCBs and RCBOs
  • Rated Voltage (Us): AC 230V 50/60Hz
  • Operating Characteristics:
    • <35% Ue: Prevents breaker closing
    • 70–35% Ue: Triggers automatic trip
    • 85–110% Ue: Allows reliable operation
  • Insulation Voltage (Ui): 500V
  • Rated Impulse Withstand Voltage (Uimp): 4kV (1.2/50 μs)
  • Dielectric Test Voltage: 2000V for 1 minute
  • Pollution Degree: 2
  • Electrical Life: ≥4000 operations
  • Mechanical Life: ≥4000 operations
  • Protection Degree: IP20
  • Ambient Temperature: −5°C to +40°C (daily average ≤35°C)
  • Storage Temperature: −25°C to +70°C
  • Terminal Connection Type: Cable connection
  • Terminal Capacity: 2.5 mm² (18–14 AWG)
  • Tightening Torque: 0.8 N·m (7 in-lbs)
  • Mounting Location: Left side of the MCB/RCBO using dedicated pin interface
  • Mounting Dimensions (mm):
    • Height: 82 ± 1.4
    • Width: 18 ± 0.43
    • Depth: 49.5 ± 0.31
    • Mounting hole spacing: 45 ± 0.31
  • Standard Compliance: IEC/EN 60947-5-1

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