3RB2153-4FC2

The 3RB2153-4FC2 overload relay from Siemens is engineered for reliable protection of motor circuits. With a resistance rating for insulation voltage at 1000 V, it is designed to safely manage high electrical loads. This unit supports thermal currents of up to 200A, providing essential protection for various types of equipment.

It is equipped with three poles intended for the main current circuit and operates within the frequency range of 50 to 60 Hz. Safety features are impressive, with a surge voltage resistance rated at 8 kV, designed to protect against voltage spikes. In terms of mechanical endurance, the relay demonstrates significant resilience with shock resistance rated at 15g and a robust vibration resistance over a wide frequency range.

The unit's operational parameters allow installation at altitudes reaching up to 2000 meters above sea level without performance degradation. It maintains functionality under relatively high humidity, ranging from 10% to 95%. Notably, the grounding protection system responds within 1000 milliseconds, which is crucial for safety in operational settings.

With dimensions measuring 119 mm in height, 155 mm in depth, and 120 mm in width, the compact form of the 3RB2153-4FC2 allows for efficient installation in various environments. Weighing approximately 1.055 kg, this relay combines durability and efficiency in a streamlined design, making it suitable for a wide range of applications.