Siemens Overload Relay 1 NO/1 NC, 1A Adjustable Current Range, 4A F.L.C, 4A Contact Rating, 1.5 kW Power Rating 3RB3016-1PB0

Siemens 3RB3016-1PB0 overload relay is a solid state device engineered for current-sensitive protection of three-phase AC motors, offering precise thermal overload protection in machines rated up to 1.5 kW. This relay supports automatic and manual reset capabilities along with adjustable current settings ranging from 1 to 4 amperes, which ensures adaptability across various motor full load currents.

The relay incorporates both normally open (1 NO) and normally closed (1 NC) auxiliary contacts to provide flexible switching configurations. Its robust screw terminal design guarantees safe and reliable electrical connections even under rigorous conditions. The compact dimensions (64.7mm length, 45mm width, 72.5mm depth) facilitate easy mounting directly on contactors or control panels.

Designed with industrial-grade durability and compliance, this Overload Relay meets international certifications such as CE, UL, CSA, and IEC standards including IEC 61000 series for electromagnetic compatibility. With an IP20 rating, it protects against solid foreign objects while operating effectively within a temperature range of -25°C to 60°C, suitable for demanding factory and process environments.

Additional features include a trip class setting suitable for Class 10 and Class 20 applications, internal ground-fault detection, and a selector switch for choosing between manual and automatic reset modes. These capabilities make it ideal for motor protection applications in industrial automation, manufacturing, HVAC systems, and water treatment plants.

This model originates from the Czech Republic and integrates seamlessly with Siemens SIRIUS contactor systems for enhanced motor management and control strategies. It is not suitable for single-phase or DC load protection.

Provides motor overload and phase failure protection. Features automatic and manual reset capabilities. Includes trip class setting for Class 10 and Class 20. Complies with CE, UL, CSA, and IEC certifications ensuring safety and reliability.

Compact form factor enables direct mounting and easy integration. Wide operating temperature range suitable for diverse industrial environments. Adjustable current range for precise motor load matching. Screw terminal type offers secure electrical connectivity.

IP20 rated for protection against solid objects. Designed for 3-phase AC motors only, not for single-phase or DC motors. Explore the Electronics & Electricals category at EnvMart for more Siemens automation and control gear products designed to enhance industrial and commercial applications.