4-Pole DC Protection – Protects multiple DC lines for higher-voltage systems.
Overload Protection – Trips automatically when current exceeds safe limits.
Short-Circuit Protection – Quickly disconnects faulty DC circuits.
High Voltage Rating (Up to 1000V DC) – Suitable for large solar PV systems.
Current Range up to 63A – Supports different DC loads and system sizes.
High Breaking Capacity (6kA) – Safely interrupts high DC fault currents.
Thermal-Magnetic Trip Mechanism – Provides accurate and reliable protection.
Ideal for Solar PV Systems – Widely used in photovoltaic and DC distribution applications.
₨ 4,200 ₨ 4,500
The CNC 4P DC MCB Circuit Breaker YCB8-63PV is a reliable protection device designed for high-voltage DC systems, especially in solar photovoltaic installations. It provides four-pole protection, disconnecting multiple DC lines during overload or short-circuit conditions to ensure maximum safety. With a high voltage rating up to 1000V DC and current capacity up to 63A, it offers stable and efficient circuit protection. Its compact DIN rail design allows easy installation in solar combiner boxes and DC distribution panels, making it ideal for PV and other DC power applications.
| Specification | Details |
| Standards | IEC/EN 60947-2 |
| Number of Poles | 4 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 |
Dual Power Manual Transfer Switch (MTS) – Enables manual switching between two independent DC power sources (e.g., solar array and battery bank) in a PV system for reliable power control.
4P + 4P Pole Configuration – Provides full isolation of both positive and negative poles for each power path, ensuring greater safety and complete DC disconnection when switching.
High DC Voltage & Current Capacity – Typically rated for up to 1000 V DC and 63 A, suitable for a wide range of solar system sizes and off‑grid applications.
Built‑in Overload & Short‑Circuit Protection – Integrated MCB function protects DC circuits from overcurrent and short circuits during normal operation.
Robust Construction – Made with flame‑retardant, durable materials to withstand PV environmental conditions and long‑term use.
Manual Operation with Visual Indicators – Simple hand‑operated transfer and clear on/off indicators help ensure correct switching and safer operation.
DIN‑Rail Mountable – Designed for easy installation in DC combiner boxes, distribution panels, or PV system enclosures.
Suitable for PV & Off‑Grid Systems – Ideal for solar PV installations, battery backup systems, and other DC power networks requiring safe manual source selection.
Adjustable Over‑Voltage Protection — Cuts power when phase voltage exceeds the set safe level to protect equipment from high‑voltage damage.
Adjustable Under‑Voltage Protection — Disconnects supply if phase voltage drops below the set threshold to avoid brown‑out damage.
Over‑Current Protection — Protects circuits from over‑current conditions with adjustable current limits.
Three‑Phase Balance & Asymmetry Protection — Detects phase imbalance (asymmetry) and trips to prevent damage to motors and other loads.
Phase Sequence Protection — Ensures correct phase order and prevents reversal faults that can damage three‑phase equipment.
Adjustable Timing Controls — Active time, reconnect delay, and power‑on delay are adjustable to fine‑tune protection response.
Manual Voltage & Current Calibration — Allows precise calibration of measurement ranges to match specific system requirements.
DIN‑Rail Mountable Design — Standard 35 mm DIN‑rail installation for easy panel mounting.
Wide Use Cases — Suitable for industrial, commercial, and residential three‑phase systems to protect motors, compressors, HVAC units, and other loads.
Single‑Pole AC Miniature Circuit Breaker (MCB) – Protects a single phase in AC electrical circuits.
Rated Voltage: 230/400 V AC at 50/60 Hz — suitable for standard household and industrial AC systems.
C‑Type Trip Curve – Trips on moderate overcurrents (≈5–10× rated current), ideal for circuits with moderate inrush like lighting and small motors.
Overload & Short‑Circuit Protection – Automatically disconnects the circuit when current exceeds safe limits to prevent wiring or device damage.
Multiple Current Ratings Available: Often offered in 2 A, 4 A, 6 A, 10 A, 16 A, 20 A, 32 A, 63 A to match different circuits.
Compact, DIN‑Rail Mountable Design – Easy to install in standard distribution boards and electrical panels.
2P + 2P DC Manual Transfer Switch (MTS) – Lets you manually switch between two DC power sources in a photovoltaic (PV) setup, such as a solar array and a backup battery bank.
Dual Power Operation – Designed for DC dual power systems to ensure continuity of power without automatic switching.
Rated for High DC Voltage: Supports up to 1000 V DC, meeting common PV system requirements.
Integrated Circuit Breaker Protection: Combines manual transfer switching with overload and short‑circuit protection in one unit.
2P + 2P Pole Structure: Provides full protection and switching for two separate DC sources (each 2‑pole).
Rated Current Options: Available (commonly) at 63 A and potentially other ratings depending on model.
DIN‑Rail Mountable: Compact design fits standard 35 mm DIN rails in PV combiner boxes and DC distribution panels.
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