MCB, 4 Pole, C Curve, 15kA, 125A, 415V

About the Product

The AU HR MCB 125A FP 415V AC 15kA C Curve is a high-capacity Miniature Circuit Breaker engineered to provide robust protection against overloads & short circuits in three phase electrical installations. It is ideal for industrial, commercial, & heavy-duty applications where very high current handling & full circuit isolation are essential.

With a 125A current rating & a high 15kA breaking capacity, this MCB ensures safe interruption of fault currents even under severe electrical fault conditions. The four pole (FP) configuration enables protection & isolation of all three phases along with the neutral, ensuring comprehensive safety & system reliability.

How the MCB Works

This MCB protects electrical circuits through continuous monitoring & automatic operation:

• Monitors current flow across all three phases & neutral

• Trips during sustained overload conditions

• Instantly disconnects supply during short circuit faults

• Simultaneously isolates all phases & neutral

This ensures complete protection of wiring, equipment, & overall electrical systems.

Electrical Configuration

• Rated current: 125A

• Poles: Four pole (FP – 3 phase + neutral)

• Rated voltage: 415V AC

• Breaking capacity: 15kA

• Tripping curve: C Curve

• Function: Overload & short circuit protection

• Application: High-capacity three phase systems

Construction & Design

The MCB is engineered for durability & high-performance operation:

• Four pole design for full system isolation

• High 15kA breaking capacity for handling severe fault currents

• C Curve tripping suitable for inductive & moderate inrush loads

• Compact modular design compatible with DIN rail mounting

• Advanced arc extinguishing mechanism for safe fault interruption

• Reliable & consistent tripping characteristics

Safety & Protection

• Protects against overload & short circuit faults

• Ensures simultaneous disconnection of all phases & neutral

• Reduces risk of electrical hazards & equipment damage

• Enhances system safety, reliability, & performance

• Supports safe operation & maintenance

Mounting & Durability

• DIN rail mountable for easy installation

• Suitable for distribution boards & industrial panels

• Compact modular construction

• Designed for long mechanical & electrical life

• Reliable under continuous high load & demanding conditions

Application Domains

• Industrial electrical systems

• Commercial installations

• Three phase distribution boards

• Motor & machinery circuits

• HVAC & inductive load applications

Key Features

• 125A rated MCB for high-capacity three phase circuits

• Four pole (FP) configuration including neutral isolation

• 15kA high breaking capacity

• C Curve for inductive & moderate inrush loads

• Reliable overload & short circuit protection

• Compact DIN rail mountable design

• Durable, long-life construction

Applications

• Industrial power distribution systems

• Commercial electrical installations

• Three phase distribution boards

• Motor & equipment protection

• High capacity power circuits

FAQs

1. What does FP mean in this MCB?
Ans: FP (Four Pole) means the breaker protects & disconnects all three phases along with the neutral simultaneously.

2. What is the importance of 15kA breaking capacity?
Ans: It ensures the MCB can safely interrupt very high fault currents up to 15kA.

3. Why is a C Curve used?
Ans: C Curve is suitable for circuits with moderate inrush currents like motors & inductive loads.

4. Where is a 125A FP MCB used?
Ans: It is used in high-capacity three phase systems in industrial & commercial installations.

5. Does it isolate the neutral conductor?
Ans: Yes, the four pole design ensures complete isolation including the neutral.

6. How is this MCB installed?
Ans: It is installed on a DIN rail inside a distribution board or control panel.

7. Why is an FP MCB important?
Ans: It provides complete circuit isolation, improving safety & ensuring reliable protection in three phase electrical systems.