Inrush current limiter 16A DIN ICL-16R

Inrush current limiter – protection and installation reliability

The ICL-16R inrush current limiter is a component designed to reduce high currents occurring during the start-up of devices with capacitive or inductive loads. This prevents unnecessary tripping of overcurrent circuit breakers and increases power supply stability. The device is particularly useful in installations where many loads are connected, such as switch-mode power supplies. DIN rail mounting simplifies integration with existing electrical infrastructure.

Construction and application

ICL-16R uses a cement resistor in combination with a bypass relay, which effectively limits the inrush current without unnecessary energy losses, unlike traditional solutions based on NTC thermistors. The relay automatically bypasses the resistor after the device stabilizes, minimizing the impact on system efficiency. This solution allows more power supplies to be connected to a single circuit without the risk of overload. The device finds application in industrial, commercial installations and wherever protection against inrush currents is required during device start-up.

Key features and benefits

• Effective protection: Protects the circuit against overload and short circuit — like most circuit breakers in this class.
• High reliability: The construction based on a cement resistor and relay ensures stable operation for a long time.
• Easy installation: Designed for mounting on a standard DIN rail TS-35/7.5 or TS-35/15, which simplifies installation and integration with existing systems.
• No energy loss: After the start-up is completed, the bypass relay switches off the resistor, minimizing power losses and impact on system efficiency.
• Versatility: Can be used with various types of switch-mode power supplies, especially where high inrush currents occur.
• Wide operating temperature range: Allows operation in harsh environmental conditions (-30°C to +70°C).
• Increased number of connected devices: Allows you to connect more loads to a single circuit without the risk of exceeding the permissible current.

Remember to choose the appropriate overcurrent circuit breaker (type C or D) to ensure optimal protection of the electrical installation. The selection of the circuit breaker should take into account the rated current and short-circuit capacity, in order to avoid unnecessary tripping of the protection during normal system operation.