Single-Pole DC Protection – Designed to protect single-pole DC circuits.
Overload Protection – Trips automatically when current exceeds safe limits.
Short-Circuit Protection – Quickly disconnects power during faults.
High Voltage Rating (500V DC) – Suitable for high-voltage DC systems like solar setups.
High Current Capacity (Up to 125A) – Supports heavy DC loads and battery systems.
6kA Breaking Capacity – Safely interrupts high fault currents.
DIN Rail Mounting – Easy installation in electrical panels.
₨ 1,250 ₨ 1,500
The CNC DC 1P MCB 500V 125A YCB1 is a high-performance circuit breaker designed for DC power systems such as solar and battery installations. It provides reliable overload and short-circuit protection, automatically disconnecting the circuit to prevent damage to equipment and wiring. With a 500V DC voltage rating and 125A current capacity, it is suitable for heavy-duty DC applications. Its compact DIN rail design allows easy installation in electrical panels, making it ideal for solar photovoltaic and DC distribution systems.
| Specification | Details |
| Standard | IEC/EN 60947-2 |
| Rated Current In (A) | 125 |
| Number of Poles | 1Pole |
| Rated Working Voltage Ue (V DC) | 500 |
| Rated Impulse Voltage Uimp (kV) | 6 |
| Operation Breaking Capacity Ics (kA) | Pv: 6, PVn: 10 |
| Ultimate Breaking Capacity Icu (kA) | li = 10ln (default) |
| Tripping Type | Thermomagnetic |
| Mechanical Life (times) | 20,000 |
| Electrical Life (times) | PV: 1000, PVn: 300 |
| Polarity | Heteropolarity |
| Inline Methods | Can be up and down the line |
| Storage Temperature (°C) | -35 ~ +70 |
| Working Temperature (°C) | -40 ~ +85 |
| Altitude (m) | Use with derating above 2000m |
| Protection Degree | IP20 |
| Pollution Degree | Level 3 |
| Installation Environment | Places without significant vibration/impact |
| Installation Category | Category III |
| Installation Method | DIN35 standard rail |
| Wiring Capacity | 2.5–50 mm² |
| Terminal Torque | 3.5 NM |
4-Pole Surge Protection Device (SPD) – Designed to protect three-phase AC systems plus neutral from voltage surges and transient over voltages.
High Surge Current Handling – Built to absorb surge currents (typically around 20 kA–40 kA depending on rating) to protect equipment from lightning strikes and switching transients.
Designed for Low-Voltage AC Networks – Works with 230/400 V AC at 50/60 Hz, making it suitable for residential, commercial, and light industrial electrical panels.
Fast Response & Low Let-Through Voltage – Quickly clamps and diverts excess surge energy to ground, reducing the risk of damage to sensitive electronics.
DIN-Rail Mountable – Compact, DIN-rail design for easy installation in distribution boards and sub-panels.
Thermal Disconnect Protection – Often includes thermal disconnection mechanisms for added safety if internal components overheat.
Visual Status Indicators – Many models use simple status windows/LEDs (green for normal, red for fault) to show device health and when replacement is needed.
Over-Voltage Protection – Automatically cuts power when the input voltage exceeds a set safe limit.
Under-Voltage Protection – Automatically shuts off power if the voltage falls below the configured threshold.
Over-Current Protection – Trips the socket if the current exceeds the adjustable limit (1–16 A).
Automatic Recovery – Restores power automatically once voltage/current returns to normal after a fault.
Real-Time Voltage & Current Display – Built-in digital display shows live voltage and current readings.
Adjustable Calibration – Voltage calibration adjustable within ±9.5 % for more accurate readings.
Configurable Protection Values – Users can adjust over/under-voltage and over-current trigger levels and delay times.
Factory Reset & Fault Inquiry – Easy reset of settings and ability to check fault history with button presses.
Wide Voltage Range Compatibility – Works with 90–300 V AC supply, suitable for both 110 V and 220 V environments.
Durable Construction & Long Life – Low power consumption (< 2 W) and long mechanical/electrical life (~100,000 operations).
Dual‑Function Design: Acts as both a circuit breaker and a manual changeover/transfer switch to safely switch between two AC power sources (e.g., grid and generator).
63 A Rated Current: Supports loads up to 63 amps, suitable for larger circuits and subpanels.
2‑Pole Configuration: Provides simultaneous switching and isolation of live and neutral lines for safer operation.
Manual Operation: Simple hand‑operated transfer between main and backup power — no automation.
Integrated Isolation Feature: Includes a mechanical isolating function for safer maintenance and prevention of back‑feed.
Robust Construction: Made with flame‑retardant plastic and durable materials for reliability in industrial, commercial, and residential installations.
DIN‑Rail Mountable: Compact design for easy installation on a 35 mm DIN rail in distribution panels or electrical enclosures.
AC Voltage Compatibility: Typically used with standard 230 V–400 V AC systems at 50/60 Hz.
1‑Pole Configuration: Single‑pole fuse holder for one DC circuit/string in a PV system.
Wide Fuse Compatibility: Works with 10×38 mm PV fuse links rated from around 3 A up to 30 A (varies by model and application).
Robust Construction: Made from high‑temperature resistant plastic with good insulation for safer DC operation.
DIN‑Rail Mountable: Standard 35 mm DIN rail mounting allows easy installation in PV combiner boxes and DC panels.
Essential PV Protection: Acts as a base for fuse links that protect against overcurrent, overloads, and short‑circuit faults in solar strings.
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