4-Pole Protection – Protects three phases and neutral together for full circuit safety.
Overload Protection – Automatically trips when current exceeds the safe limit.
Short-Circuit Protection – Quickly disconnects power during electrical faults.
Thermal-Magnetic Trip – Provides fast and reliable fault detection.
High Breaking Capacity (6kA) – Safely interrupts high fault currents.
DIN Rail Installation – Easy mounting in distribution boards.
Wide Current Range – Available from 1A to 63A for different applications.
Compact & Durable Design – Long mechanical life and stable performance.
₨ 2,100 ₨ 2,500
The CNC 4P AC MCB Circuit Breaker YCB7-63N is a reliable protection device designed for three-phase electrical systems. It provides four-pole protection, disconnecting all three phases and the neutral line during overloads or short circuits to ensure maximum safety. Equipped with a thermal-magnetic tripping mechanism and 6kA breaking capacity, it delivers fast and stable protection for electrical circuits. Its compact DIN rail design allows easy installation in distribution boards, making it suitable for residential, commercial, and industrial applications.
| Specification | Value |
| Type | Standard IEC/EN 60898-1 |
| Rated Current (In) | 20A, 32A, 40A, 63A |
| Poles | 4 Pole |
| Rated Voltage (Ue) | 230/400 V |
| Insulation Voltage (Ui) | 500 V |
| Rated Frequency | 50/60 Hz |
| Rated Breaking Capacity | 6000 A |
| Rated Impulse Withstand Voltage (Uimp) | 4000 V |
| Dielectric Test Voltage at Industrial Frequency (1 min) | 2 kV |
| Pollution Degree | 2 |
| Thermo-Magnetic Release Characteristic | B, C, D |
| Electrical Life | 6000 cycles |
| Mechanical Life | 20000 cycles |
| Protection Degree | IP20 |
| Ambient Temperature (Daily Average ≤35°C) | -25~+70°C |
| Storage Temperature | -25~+70°C |
| Terminal Connection Type | Cable/Pin-type busbar |
| Terminal Size Top/Bottom for Cable | 25 mm² / AWG 18-3 |
| Terminal Size Top/Bottom for Busbar | 25 mm² / AWG 18-3 |
| Tightening Torque | 2 N·m / 18 In-lbs |
| Mounting | On DIN rail EN 60715 (35 mm) by means of a fast clip |
| Connection | From top and bottom |
| Reference Temperature for Setting of Thermal Element | 30°C |
2-Pole DC Surge Protection – Designed to protect DC power systems (e.g., solar PV strings and DC distribution) from damaging voltage surges and transient spikes.
High Discharge Capacity (20 kA ~ 40 kA) – Can absorb and divert large surge currents caused by lightning or fast transient overvoltage events, helping safeguard connected equipment.
Rated for Up to 1000 V DC – Suitable for high-voltage DC systems typically used in photovoltaic (solar) installations and other DC circuitry.
Fast Response Time – Activates quickly (in microseconds) to reduce exposure to harmful transient events in the DC network.
Low Residual Voltage – Limits the voltage that passes through to sensitive devices during a surge, minimizing potential damage
Thermal Disconnect Safety – Built-in thermal disconnect devices improve reliability by isolating the unit if internal components overheat.
Visual Status Indicators – Color-coded indicators (e.g., green for normal, red for fault) provide quick feedback on protection status.
DIN-Rail Mountable – Easy installation in DC combiner boxes, PV distribution panels, and electrical cabinets using standard DIN-rail mounting.
3‑Phase Dual Power Manual Transfer Switch (MTS) – Designed for three‑phase AC systems to manually switch between two independent power sources (e.g., grid and backup/generator), ensuring continuous power supply.
4P + 4P Pole Configuration – Each power source has a 4‑pole module (phases L1, L2, L3 + neutral), providing full control and protection across all conductors.
Integrated MCB Protection – Combines manual transfer switch functionality with a Miniature Circuit Breaker (MCB) to offer overload, short‑circuit, under‑voltage, and phase‑loss protection in one unit.
Manual Operation – User‑controlled changeover between main and backup power sources for reliable fail‑safe switching without automation.
Wide Voltage & Frequency Support – Suitable for 230 V / 400 V AC systems at 50 Hz / 60 Hz frequencies, compatible with a broad range of electrical networks.
Multiple Current Ratings – Available in common ratings such as 6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A to match different load requirements.
High Breaking Capacity – Typically around 6 kA, ensuring safe interruption of fault currents during protection events.
DIN‑Rail Mountable – Easy installation in electrical distribution boards and control panels using standard 35 mm DIN rail.
10-in-1 Smart Protection & Monitoring – Monitors voltage, current, leakage current, total kWh (energy) and protects your circuit.
WiFi Connectivity & App Control – Connects to your home Wi-Fi (2.4 GHz) and lets you remote ON/OFF control, monitor and adjust settings from the Smart Life / TUYA app on iOS/Android.
Adjustable Protection Settings – Set thresholds for over-voltage, under-voltage, over-current, and leakage current via the app or manually.
Voltage & Current Monitoring – Real-time display and tracking of line voltage and current in the app.
Leakage Current Protection – Detects leakage and cuts power to enhance electrical safety.
Energy Consumption Tracking – Shows total kWh usage so you can monitor and manage power consumption.
Scheduled Control & Timer – Create schedules to automate ON/OFF times for your circuits via the app.
Automatic Reconnection with Delay – After a fault trip, it can reconnect automatically with an adjustable delay (1 s to 500 s).
Calibration Feature – Allows calibration for voltage, current, and kW readings for better accuracy.
Voice Assistant Compatible – Works with Google Assistant / Alexa for hands-free control (where supported).
DIN-Rail Mountable – Standard design for installation in electrical panels.
4‑Pole AC Miniature Circuit Breaker – Provides protection for all three phases plus neutral (3P + N) in AC systems.
C‑Type Trip Curve – Trips reliably on overloads and short circuits, and can handle moderate inrush currents from motors and lighting loads.
Wide Voltage Compatibility: Rated for 230/400 V AC and works with 50 Hz/60 Hz electrical networks.
Multiple Current Ratings Available – Often offered in ratings up to 63 A (and sometimes 16 A, 20 A, 25 A, 32 A, 50 A).
Overload & Short‑Circuit Protection – Automatically disconnects the circuit if current exceeds safe limits.
DIN Rail Mounting – Compact design for easy installation in distribution boards.
Durable Construction – Built with robust materials for reliable performance in residential, commercial, and industrial installations.
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