B10C4100A IMO MCB 10kA, C Curve 4 Pole, 100 Amp

Why Choose the IMO B10C4100A Miniature Circuit Breaker?

The IMO B10C4100A is a heavy-duty four-pole miniature circuit breaker designed to protect higher-current three-phase electrical circuits against overload and short-circuit conditions. Combining a 100 A rated current with a C curve tripping characteristic, it is suitable for industrial distribution systems, machinery supplies, commercial switchboards and electrical control panels.

As part of the IMO B10 circuit protection range, the B10C4100A uses a thermal-magnetic operating mechanism to provide dependable protection across a wide range of fault conditions. The thermal element responds to sustained overloads, while the magnetic trip mechanism provides rapid disconnection when a severe short circuit occurs.

The four mechanically linked poles operate simultaneously, supporting complete isolation of three phases and the neutral conductor where applicable. Its modular DIN rail format enables straightforward integration into compatible distribution boards and control enclosures while helping installers maintain an organised panel layout.

Key Advantages

• Four-pole protection for three-phase electrical systems.
• 100 A rated current for higher-load circuits.
• C curve tripping characteristic for moderate inrush currents.
• Thermal-magnetic overload and short-circuit protection.
• Mechanically linked poles provide simultaneous circuit isolation.
• DIN rail mounting supports fast and orderly panel installation.

Key Features

• IMO B10 Series miniature circuit breaker.
• Four-pole configuration.
• 100 A rated current.
• C curve operating characteristic.
• Thermal overload protection.
• Instantaneous magnetic short-circuit protection.
• Common operating handle across all four poles.
• Manual switching and reset functionality.
• Compact modular construction.
• Suitable for standard DIN rail installation.
• Designed for industrial and commercial electrical distribution.

High-Current Four-Pole Circuit Protection

The IMO B10C4100A is designed for applications that require dependable protection at currents up to 100 A. Its thermal element monitors sustained overcurrent conditions that could cause excessive cable heating, insulation damage or premature equipment failure. When an overload persists, the breaker trips and disconnects the circuit.

For severe short-circuit conditions, the magnetic trip mechanism responds rapidly to interrupt the fault current. This dual operating principle provides effective protection for electrical conductors, distribution equipment and connected loads when the breaker has been correctly selected for the installation.

The C curve characteristic accommodates moderate starting currents that may occur when energising transformers, motors, contactors and other inductive equipment. This helps reduce unnecessary tripping during normal start-up while retaining reliable protection against genuine electrical faults.

Typical Applications

• Industrial distribution boards.
• Three-phase machinery supplies.
• Commercial switchboards.
• Manufacturing and production equipment.
• HVAC distribution circuits.
• Pump and compressor installations.
• Automation control panels.
• OEM electrical systems.