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The Live CB116D Single Pole MCB is a specialized high-performance miniature circuit breaker engineered to provide reliable protection for demanding single-phase circuits with extremely high inrush currents. Rated at 16 Amps with a D-curve tripping characteristic, this 1-pole breaker safeguards the phase conductor on AC systems up to 230V at 50/60Hz frequency. It features an enhanced 10kA breaking capacity, making it suitable for installations with higher prospective short-circuit currents. The D-curve characteristic (10-20x In) is specifically designed for applications with very high momentary startup currents, ensuring the breaker tolerates these surges while maintaining full protection against overloads and short circuits. With its robust construction and precision thermo-magnetic release, the CB116D ensures equipment protection and operational safety for specialized industrial and commercial applications.
High 10kA Breaking Capacity: Enhanced fault current interruption capability for installations with higher prospective short-circuit currents.
D-Curve Characteristic: Trips instantaneously at 10-20 times rated current (160A to 320A), specifically designed for applications with extremely high inrush currents.
High-Capacity 16A Protection with Extreme Surge Tolerance: Ideal for larger single-phase motors, transformers, welding equipment, and industrial machinery with very high startup currents.
Single Pole Configuration: Protects one phase conductor, standard for single-phase 230V circuits.
Industrial Application Focus: Prevents nuisance tripping where standard B/C curves would fail due to extreme inrush.
Precision Thermo-Magnetic Release: Thermal bimetal strip for overload protection and magnetic solenoid for short-circuit response.
Superior Electrical Isolation: 4000V impulse withstand rating and 500V insulation voltage.
Extended Operational Life: 8,000 electrical operations for long-term reliability.
Professional Installation: DIN-rail mounting with IP20 finger-safe terminals and 16mm² wiring capacity.
| Specification | Details |
|---|---|
| Brand | Live |
| Model Number | CB116D |
| Device Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 1 Pole (1P) |
| Current Rating (In) | 16 Amperes |
| Trip Curve Type | D Curve (10-20 × In) |
| Operational Voltage | 230/400V AC |
| Rated Breaking Capacity | 10kA (10000 Amps) |
| Frequency Range | 50/60 Hertz |
| Insulation Rating (Ui) | 500 Volts |
| Impulse Withstand (Uimp) | 4000 Volts (1.2/50 µs) |
| Dielectric Test Voltage | 2kV for 60 seconds |
| Protection Mechanism | Thermo-magnetic |
| Operating Temperature | -5°C to +40°C |
| Calibration Reference | 30°C |
| Electrical Lifespan | 8,000 cycles |
| Protection Class | IP20 |
| Terminal Capacity | Up to 16 mm² |
| Mounting Type | DIN Rail (35mm) |
| Standard | IEC 60898-1 |
1. What are the main applications for the CB116D 16A 1P MCB?
Single-phase motors up to 3HP, large control transformers, welding equipment, industrial solenoid banks, X-ray machines, and circuits with extreme inrush currents up to 320A.
2. What motor power can this 16A D-Curve breaker handle?
Single-phase motors up to 3HP (2.2kW) depending on starting characteristics. D-Curve tolerates the high starting current (up to 8-10x FLC) without nuisance tripping.
3. Why choose D-Curve over C-Curve for 16A industrial circuits?
D-Curve (10-20x In) handles extreme inrush where C-Curve (5-10x In) would trip. Essential for equipment with starting surges exceeding 10x running current.
4. What transformer size can this 16A D-Curve breaker support?
Suitable for control and isolation transformers up to 2.5kVA, handling high magnetizing inrush during energization without nuisance tripping.
5. What cable size is recommended for 16A D-Curve industrial circuits?
2.5mm² copper conductor minimum. 4mm² recommended for longer runs and mechanical robustness in industrial environments. Terminals accept up to 16mm².
