CBI 25A 3P+N 6kA Circuit Breaker C2 D/M

• The CBI Electric QA(13) 4-Pole (3P+N configuration) Miniature Circuit Breaker delivers robust three-phase circuit protection with switched neutral isolation in an industry-leading compact design.
• Measuring only 52mm wide (4x13mm modules), this Dual Mount breaker fits both DIN and Mini rails.
• Utilizing precise hydraulic-magnetic technology, it ensures accurate, temperature-independent tripping performance from -40°C to +85°C.
• With a Medium (Curve 2) time delay characteristic and a 6kA interrupting capacity at 415 Vac (to IEC/EN 60947-2), this MCB provides reliable protection for industrial machinery, commercial distribution panels, and applications requiring full 4-pole isolation and high fault current handling in a space-saving format.

Features

• Type: AC Circuit Breaker, 4 Pole (3 Poles Protected + 1 Switched Neutral / 3P+N)

• Series: QA(13) - D/M Dual Mount

• Technology: Hydraulic-Magnetic (Temperature Independent Tripping)

• Interrupting Capacity: 6 kA @ 415 Vac (IEC/EN 60947-2, VDE, CE, EAC, GB14048.2, AS/NZS 3111)

• Rated Voltage: 415 Vac (Line-to-Line)

• Current Ratings: 1A to 25A (for 6kA rating per IEC/EN 60947-2)

• Time Delay Curve: Curve 2 (Medium Delay, Instantaneous Trip 5-10 x In)

• Mounting: Dual Mount (Fits 35mm DIN Rail & Mini Rail)

• Compact Design: Ultra-compact 52mm width (4 x 13mm modules).

• Shell Colour: Black

• Functionality: Overcurrent protection on 3 poles (L1, L2, L3), simultaneous switching of all 4 poles (L1, L2, L3, N).

• 100% Rating Capability: Operates at full rated current regardless of ambient temperature.

• Trip Indication: Linked mid-trip handle position indicates fault on any protected phase.

• Immediate Reset: Can be reset instantly after clearing the fault.

• Isolation Capable: Provides full 4-pole (3P+N) electrical isolation.

• Operating Temperature: -40°C to +85°C.

• Durability: High mechanical endurance (10,000 operations), withstands 5G vibration & 16G shock.

• Safety Compliance: Meets multiple international standards including IEC/EN 60947-2, VDE, CE, EAC, AS/NZS 3111. UL 1077 Recognised.

• Busbar Friendly: Design facilitates use with compatible busbar systems.

• LED Indicator: Visual confirmation of power status.

Benefits

• Complete Circuit Isolation: Ensures maximum safety during maintenance by disconnecting all phases and the neutral simultaneously.

• Reliable High-Fault Protection: 6kA rating protects circuits in commercial and industrial settings with higher potential fault currents.

• Temperature Independent Accuracy: Prevents nuisance tripping due to heat and ensures reliable protection in extreme temperatures.

• Maximum Panel Density: Extremely narrow profile significantly saves valuable rail space in distribution boards and control panels.

• Mounting Versatility: Dual Mount capability allows installation flexibility across different projects and panel types.

• General Purpose Application: Curve 2 trip characteristic suits a wide variety of three-phase loads with moderate start-up currents.

• Clear Fault Indication: Simplifies troubleshooting by clearly showing when a trip is due to an electrical fault.

• Reduced Downtime: Immediate reset function minimizes system interruption after fault clearance.

Technical Specifications

Ideal Use

• Three-Phase + Neutral Main Switch: Provides main circuit protection and full isolation (including neutral) for distribution boards.

• Industrial Machinery: Protecting 3-phase equipment requiring simultaneous neutral disconnection for safety or control reasons.

• Commercial Distribution Panels: Branch circuit protection for 3-phase loads where 4-pole breaking is specified, especially in compact panels.

• Data Centers / UPS Systems: Protecting input or output circuits where neutral integrity and full isolation during faults or maintenance are critical.

• Applications requiring Curve 2: Suitable for general three-phase loads like resistive heating, lighting, or motors with moderate starting currents.

Tips

• Confirm Configuration: Ensure the 3P+N (3 protected poles, 1 switched neutral) configuration is correct for the application.

• Voltage Rating: Verified for 415 Vac Line-to-Line systems.

• Interrupting Capacity: Check that the 6kA rating is sufficient for the installation's fault level.

• Curve Choice: Curve 2 is general purpose; consider if Curve 1 is needed for higher inrush loads.

• Mounting System: Compatible with both standard DIN rail and Mini Rail systems.

• Wiring: Connect L1, L2, L3 to the protected poles and Neutral to the switched (unprotected) pole. Use appropriate wire sizes (0.75-25mm² IEC) and torque terminals to 2.5 Nm (IEC).

• Temperature Independence: Ideal for panels with heat sources or fluctuating ambient conditions.

• Full Isolation: Leverages the 4-pole simultaneous switching for enhanced maintenance safety.