B57153S0150M000

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Inrush Current Limiters (ICL)

Inrush Current Limiters (ICLs) are electronic components which limit very high inrush currents to a load caused by the sudden application of AC electric power. Installed near the load, they allow the system to function correctly under normal operating conditions, but protect against an overload in the event of a short circuit or other fault in the system.

B57153S0150M000 ICL is designed to protect low voltage AC and DC power supplies, both resistive and inductive, from overload and/or short-circuit events. It limits inrush current to the specified value while allowing maximum current for normal operations. The device features an additional internal protection limit circuit, ensuring that the current stays within the limits even when the load wows out of range.

The B57153S0150M000 ICL offers a wide range of application fields, such as control automation, computers, consumer electronics, motors, household appliances, and lighting. It is designed with a low profile package suitable for applications with tight space requirements and supports mains voltage up to 250V AC per phase.

The B57153S0150M000 ICL works on a principle that relies on the simple fact that current through an inductor cannot change instantaneously. When an AC voltage is applied to a load, an inrush current flows until the potential energy stored in the inductor is equal to the load on the line. The B57153S0150M000 ICL uses a metal oxide varistor (MOV) and a capacitor to reduce the inrush current to the specified limit, allowing up to yet another specified, safe current limit.

The metal oxide varistor works by clamping the voltage across it when the pre-set limit is exceeded. The excess energy is dissipated as heat and therefore the excess current is reduced. The capacitor works in conjunction with the MOV to control the current flow. It absorbs a portion of the initial energy from the power supply, gradually releasing it back to the supply as the SOC is established. This helps reduce di/dt of the current, thus limiting the current.

The B57153S0150M000 ICL is an ideal solution for a wide range of applications where limiting inrush currents is essential for safe operation. It offers a high level of current limitation accuracy and is suitable for applications with tight space requirements. In addition, it is designed with an extremely low profile package and can operate at temperatures up to 125°C.

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