Description
Key Features
The KRF 2 Pole MCB DC Circuit Breakers offer reliable protection and performance for DC systems, ensuring safety and efficiency in various applications.
- High Voltage & Current Capacity
Designed to handle a rated operating voltage up to DC1000V and current up to 63A.
○ Ideal for isolation, overload, and short circuit protection.
○ Suitable for photovoltaic, industrial, and communication systems.
- Compact Modular Design
Features a small, space-saving design for easy integration.
○ Standard DIN rail installation for quick setup.
○ Flexible wiring options to meet diverse customer needs.
- Advanced Protection Capabilities
Provides overload, short circuit, and isolation protection.
○ Breaking capacity of 6KA for strong protection.
○ Electrical life of 10,000 cycles, matching a 25-year lifecycle of photovoltaic systems.
- Comprehensive Accessory Options
Expandable with auxiliary contacts, alarm contacts, and shunt releases.
○ Compatible with various configurations for enhanced functionality.
○ Supports multiple inline methods for versatile installations.
The KRF DC Circuit Breakers are engineered for reliable operation in diverse environments, offering robust safety and performance.
- Wide Application: Suitable for photovoltaic systems, industrial, residential, and communication setups.
- Environmental Compatibility:
○ Working temperature: -35°C to +70°C
○ Storage temperature: -40°C to +85°C
○ Altitude: Derating above 2000m
○ Pollution degree: Level 3
- Ease of Installation:
○ DIN35 standard rail mounting
○ Wiring capacity: 2.5–25mm²
○ Terminal torque: 3.5 N·m
| Specification | Details |
| Standards | IEC/EN 60947-2 |
| Number of Poles | 2 Pole |
| Rated Current In (A) | 20A, 32A, 40A, 63A |
| Rated Working Voltage Ue (V DC) | 1000V |
| Rated Insulation Voltage Ui (V DC) | 1200 |
| Rated Impulse Voltage Uimp (kV) | 4 |
| Ultimate Breaking Capacity Icu (KA, T=4ms) | Pv: 6, PVn: |
| Operation Breaking Capacity Ics (KA) | Ics = 100% Icu |
| Tripping Type | Type B, Type C, Type K, Thermomagnetic |
| Curve Type | B, C, K |
| Mechanical Life | 20,000 times |
| Electrical Life | PV: 1500, PVn: 300 |
| Polarity | Heteropolarity |
| Alarm Contact | Available (□) |
| Auxiliary Contact | Available (□) |
| Shunt Release | Available (□) |
| Inline Methods | Can be up and down into the line |
| Working Temperature (℃) | -35 ~ +70 (with storage -40 ~ +85) |
| Storage Temperature (℃) | -40 ~ +85 |
| Altitude (m) | Use with derating above 2000m |
| Protection Degree | IP20 |
| Installation Category | Category II, Category III |
| Pollution Degree | Level 3 |
| Moisture Resistance | Yes |
| Installation Environment | Places without significant vibration/impact |
| Installation Method | DIN35 standard rail |
| Wiring Capacity | 2.5-25mm² |
| Terminal Torque | 3.5 N·m |
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