Microprocessor based overload relay - 3RB (Class 10E) - 3RB3036-1WB0

Product Description

Siemens 3RB3036-1WB0 Electronic Overload Relay – Reliable Class 10E Motor Protection for Industrial Automation

The Siemens 3RB3036-1WB0 Electronic Overload Relay is a high-performance microprocessor-based motor protection device designed to deliver accurate and dependable protection for three-phase motors in demanding industrial environments. Part of the highly trusted Siemens SIRIUS 3RB3 Series, this advanced electronic overload relay provides intelligent overload protection, phase failure monitoring, and thermal motor protection to help maximize equipment reliability and operational efficiency.

Designed with a 20A to 80A adjustable current range and a Class 10E tripping characteristic, the Siemens 3RB3036-1WB0 is ideal for protecting motors operating under normal starting conditions. It is widely used in pumps, fans, conveyors, compressors, HVAC systems, packaging machinery, material handling equipment, and industrial automation applications where reliable motor protection is essential. Siemens SIRIUS electronic overload relays are recognized globally for delivering precise protection and long-term performance in industrial control systems.

Unlike conventional thermal overload relays that rely on bimetal technology, the 3RB3036-1WB0 Electronic Overload Relay uses advanced electronic current sensing combined with microprocessor-controlled evaluation. This intelligent system continuously monitors motor current and operating conditions, enabling the relay to detect overload situations with greater accuracy and repeatability than traditional thermal devices. By responding quickly to abnormal current conditions, the relay helps prevent motor overheating, insulation damage, winding failures, and costly production downtime. Similar Siemens 3RB electronic overload relays are designed specifically for precise motor protection and improved operational reliability.

One of the key advantages of the Siemens 3RB3036-1WB0 is its Class 10E protection characteristic. Class 10E is optimized for standard-duty motors with normal acceleration times. It provides an excellent balance between startup flexibility and fast fault response, ensuring that motors can start normally while still receiving rapid protection against overload conditions. This makes the relay particularly suitable for industrial applications where dependable motor performance and continuous operation are required.

The relay incorporates advanced electronic thermal modeling technology that continuously calculates motor heating conditions. This allows the 3RB3036-1WB0 Motor Protection Relay to provide accurate inverse-time delayed protection based on actual motor operating conditions rather than ambient temperature alone. As a result, motors receive consistent protection even when environmental conditions change significantly. Electronic overload relays offer improved protection accuracy compared to traditional thermal relay technologies.

A major safety feature of the Siemens 3RB3036-1WB0 is its integrated phase failure protection. Single-phasing conditions can rapidly increase current in the remaining motor phases, leading to excessive heating and severe motor damage. The relay continuously monitors all phases and automatically disconnects the motor whenever dangerous phase-loss conditions are detected. This proactive protection helps prevent expensive equipment failures and minimizes unplanned downtime.

The relay is designed for easy integration into Siemens motor starter assemblies and industrial control panels. Its compact construction allows efficient installation with compatible Siemens SIRIUS contactors while optimizing valuable panel space. Reliable screw terminal connections ensure secure wiring, vibration resistance, and long-term electrical stability in demanding industrial environments. Similar SIRIUS 3RB overload relays feature contactor mounting and screw terminal connections for simplified installation.

For enhanced monitoring and automation capabilities, the 3RB3036-1WB0 includes 1 Normally Open (1NO) and 1 Normally Closed (1NC) auxiliary contacts. These contacts can be used for overload trip indication, PLC monitoring, alarm signaling, remote diagnostics, and control circuit interruption. Integrated auxiliary contacts improve system visibility and simplify maintenance activities by providing real-time feedback regarding motor operating status.

The relay supports both manual and automatic reset functions, allowing users to choose the most suitable recovery method for their application. Automatic reset functionality helps minimize downtime in automated systems, while manual reset provides enhanced operational safety in critical processes. This flexibility makes the relay suitable for both standalone motor starters and fully automated production environments.

Built according to Siemens' stringent industrial standards, the Siemens 3RB3036-1WB0 Electronic Overload Relay offers reliable performance across a wide operating temperature range and delivers long service life in harsh industrial environments. Its rugged design, intelligent protection technology, and proven Siemens engineering make it a preferred choice for OEMs, panel builders, electrical contractors, and maintenance professionals.

At SBsmart.in, we supply genuine Siemens industrial automation and motor protection products trusted by industries across India. When you purchase the Siemens 3RB3036-1WB0, you receive an authentic Siemens SIRIUS motor protection solution engineered for superior reliability, enhanced equipment safety, and long-term industrial performance.