The Kedu CKDB7 Miniature Circuit Breaker is a standard MCB designed for terminal distribution in residential, commercial office, and general industrial applications. It protects lines from overload and short-circuit faults on AC 50/60Hz networks at a rated voltage of 230/400V and rated current of 32A.

The breaker features finger-protected wiring terminals, a contact closure and disconnection indicator, and accepts three terminal connection types: cable, U-bus, and bus bar. Installation is on a TH35-7.5 DIN rail; both top-entry and bottom-entry cable routing are supported. Various modular accessories can be configured alongside this unit.

Key Features

• 1-pole, 32A, C-curve instantaneous tripping (C-D per IEC/EN 60898-1)
• 6kA rated short-circuit breaking capacity (Icn); 10kA ultimate breaking capacity (Icu)
• Finger-protected wiring terminals with contact closure/disconnection indicator
• Three terminal connection types: cable, U-bus, and bus bar
• TH35-7.5 DIN rail mounting; top and bottom cable entry supported

Product Benefits

• Protects both residential wiring and commercial distribution circuits from overload and short circuits
• IP20 protection degree keeps internal components safe from accidental finger contact
• 6000 electrical and 10000 mechanical operating cycles ensure a long service life
• Wide conductor range (1–25mm²) accommodates small branch circuits through to sub-mains
• Certified to VDE, CCC, KC, CB, and CE for internationally compliant installations

Technical Specifications

• Model: CKDB7
• Number of Poles: 1
• Rated Current (In): 32A
• Tripping Curve: C-D (per GB10963.1 IEC/EN60898-1)
• Rated Operating Voltage (Ue): 230/400V~
• Rated Frequency: 50/60Hz
• Insulation Voltage (Ui): 500V
• Rated Impulse Withstand Voltage (Uimp): 6kV
• Dielectric Strength (1 min power-frequency): 2kV
• Protection Degree: IP20
• Short-Circuit Breaking Capacity (Icn): 6 or 10kA (per GB10963.1 IEC/EN60898-1)
• Ultimate Short-Circuit Breaking Capacity (Icu): 10kA
• Electrical Life: 6000 operations
• Mechanical Life: 10000 operations
• Conductor Cross-Section: 1–25mm²
• Copper Terminal Size: 25mm²
• Tightening Torque: 1.5–2.5 N·m
• Ambient Temperature (operating): -5°C to +40°C (24h average ≤ +35°C)
• Storage Temperature: -25°C to +55°C (up to +70°C for periods ≤ 24h)
• Maximum Altitude: ≤2000m
• Standards: GB/T 10963.1 IEC/EN 60898-1, GB/T 14048.2 IEC/EN 60947-2
• Certificates: VDE, CCC, KC, CB, CE

Why You'll Love It

• Finger-protected terminals and a clear contact indicator reduce installation errors and aid maintenance
• DIN rail mounting snaps in quickly and supports both cable entry directions for flexible panel layouts
• Wide certification set (VDE, CE, CB) gives confidence in compliant installations across Europe
• Package includes 1× Kedu CKDB7 Miniature Circuit Breaker 1P/C32A/6kA