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AEG BKF112 Industrial Miniature Circuit Breaker (MCB)
- Product Introduction: AEG BKF112 is a compact miniature circuit breaker designed for overcurrent and short-circuit protection of low-voltage residential, commercial, and light industrial electrical circuits. The single-pole MCB features a thermal-magnetic trip mechanism, high breaking capacity, and a space-saving DIN rail mount design, delivering reliable protection for lighting, power, and control circuits in electrical panels and control cabinets. It is built with a rugged plastic enclosure, corrosion-resistant internal components, and compliance with global safety standards, making it suitable for use in both indoor and semi-outdoor installations. The BKF112 provides fast fault clearing, easy installation, and visual status indication, serving as a cost-effective protection solution for low-current electrical circuits in commercial buildings, industrial control systems, and municipal infrastructure applications.
- Technical Specifications:
- Pole Configuration: Single-pole (1P)
- Rated Operational Voltage (Ue): 230 V AC (50/60 Hz), 400 V AC (cross-pole)
- Rated Incoming Current (In): 12 A (fixed trip rating)
- Rated Short-Circuit Breaking Capacity (Icu): 6 kA @ 230 V AC, 4.5 kA @ 400 V AC
- Trip Unit Type: Thermal-magnetic (B-curve trip characteristic)
- B-Curve Trip Characteristic: Trips at 3–5 In (instantaneous) for short-circuits, thermal overload protection for long-time overcurrents
Detailed content
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- Operating Temperature: -25°C to +70°C, derating >60°C (1% per °C)
- Mounting Configuration: 35 mm standard DIN rail mount (top hat), clip-on installation
- Termination Type: Screw terminals, compatible with 1.0–4.0 mm² solid/stranded copper wire
- Mechanical Life: >20,000 operations (open/close)
- Electrical Life: >10,000 operations (at full load)
- Protection Class: IP20 (terminal cover)
- Dimensions: 18 mm (W) × 85 mm (H) × 60 mm (D)
- Weight: 0.08 kg
- Compliance: IEC 60898-1, CE, UL 1077, CSA, RoHS
- Functional Features:
- B-curve thermal-magnetic trip characteristic is optimized for protection of lighting, power, and small control circuits, providing instantaneous short-circuit protection (3–5 In) and slow thermal protection for overloads, preventing nuisance tripping from inrush currents in lighting and small electrical equipment.
- 6 kA short-circuit breaking capacity ensures reliable fault clearing in low-voltage residential and light industrial electrical systems, preventing equipment damage and electrical fires from high-level short-circuits.
- Compact 18 mm width (single-pole) enables high-density installation on 35 mm DIN rails, saving valuable space in electrical panels and control cabinets for protection of multiple low-current circuits.
- Tool-free clip-on DIN rail mounting allows for fast and easy installation, with a secure locking mechanism that prevents accidental disconnection in vibration-prone environments (e.g., industrial control cabinets, machinery enclosures).
- Screw terminals with captive screws ensure secure wire termination, preventing loose connections and electrical arcing in industrial and commercial electrical circuits, with compatibility with solid and stranded copper wire (1.0–4.0 mm²).
- Visual status indicator (red/green) provides instant feedback on the breaker’s operating status (open/closed), enabling quick fault identification and troubleshooting during maintenance and repair.
- Rugged plastic enclosure (flame-retardant UL 94 V-0) provides mechanical protection and electrical insulation, with resistance to impact, dust, and moisture in indoor and semi-outdoor installations.
- Corrosion-resistant internal components (tin-plated copper contacts) ensure low contact resistance and long-term reliability, even in humid industrial and commercial environments with high moisture levels.
- Wide operating temperature range (-25°C to +70°C) ensures reliable performance in extreme environmental conditions, including cold storage facilities, high-temperature commercial buildings, and unconditioned industrial control cabinets.
- Easy manual operation (toggle handle) allows for quick circuit isolation during maintenance, with a small profile that enables operation even in tightly packed electrical panels.
- Compliance with global safety standards (IEC 60898-1, UL 1077) ensures seamless integration into international electrical projects, with certification for use in residential, commercial, and light industrial applications worldwide.
- Application Scenarios:
- Commercial building lighting protection for single-phase lighting circuits in office buildings, shopping malls, and industrial facilities, with B-curve trip characteristic optimized for lighting inrush currents.
- Industrial control panel protection for low-current 24 V DC/230 V AC control circuits (PLC power supplies, HMI panels, signal isolators) in factory automation systems, with compact design for high-density installation.
- Residential power distribution for protection of household lighting, power outlets, and small electrical appliances in homes and apartment buildings, with easy installation and reliable fault protection.
- Light industrial equipment protection for small single-phase motors (fans, small pumps), office equipment, and laboratory instruments in light manufacturing and research facilities.
- Building automation for protection of HVAC control circuits, access control systems, and fire alarm sensors in commercial and industrial buildings, with DIN rail mounting for integration into building control panels.
- Retail and hospitality for protection of lighting, display equipment, and POS systems in retail stores, restaurants, and hotels, with compact design for installation in small electrical enclosures.
- Municipal infrastructure for protection of street lighting control circuits, traffic signal systems, and small pump stations in outdoor municipal electrical systems, with wide temperature tolerance for outdoor conditions.
- Portable electrical equipment for protection of power supply circuits for portable tools, test equipment, and mobile automation stations in industrial and construction environments.
