Siemens Solid State Overload Relay 1 NO/1 NC, Adjustable Current Range 0.32 to 1.25 A, 370 W Power Rating 3RB3026-2NB0

Siemens 3RB3026-2NB0 solid state overload relay is an industrial-grade device designed for precise and reliable motor overload protection. Operating within an adjustable current range of 0.32 to 1.25 amperes, this relay offers a power rating of 370 watts, providing robust protection to three-phase AC motors in sinusoidal 50/60Hz power networks.

The relay features a 1 normally open (NO) and 1 normally closed (NC) contact configuration with a relay contact current rating of 1.25 A and contact voltage rating of up to 690 V AC. It supports direct mounting with screw terminal types ensuring secure and convenient installation in control panels and automation gear.

Equipped with both automatic and manual reset methods, the relay includes a selector switch for easy selection between these modes. Additional functionality includes trip class setting, internal ground-fault detection, and a switch position indicator with test function for comprehensive monitoring and operation.

Compact and robust, the device measures 69.7 mm in length, 45 mm in width, and 83.5 mm in depth, with an IP20 protection rating suitable for industrial environments. It operates efficiently across a temperature range from -25°C to 60°C, making it reliable for various industrial and manufacturing applications.

It complies with stringent international standards such as IEC series (60068-2-27, 61000-4-2 to 6, 61508, 65029, 81346-2), UL, CCC, CE, CSA, and EAC approvals, ensuring high safety and quality standards for critical industrial protection tasks.

This Siemens overload relay is intended for protection of three-phase AC motors against overload conditions, phase unbalance, or phase failure. It is not suitable for single-phase or DC load protection. Users are advised to select the relay according to the motor's full load current and contactor frame size.

Provides current-sensitive protection for 3 phase AC motors in sinusoidal 50/60Hz networks. Features 1 normally open and 1 normally closed contact configuration. Supports manual and automatic reset methods with selector switch.

Includes trip class setting and internal ground-fault detection for enhanced safety. Direct mounting design with screw terminal type for secure connections. Adjustable current range from 0.32 to 1.25 A to match motor full load current and contactor size.

Operating temperature range from -25°C to 60°C suitable for varied environments. Complies with numerous international standards including CE, UL, CSA, and IEC approvals. Compact size with dimensions 69.7mm length, 45mm width, and 83.5mm depth.

Designed for protecting motors against overload, phase unbalance, and phase failure.

Suitable for industrial automation, manufacturing, electrical control panels, and motor protection setups in laboratories and commercial facilities. Siemens overload relays are optimized for performance, safety, and compliance to ensure long-term operational reliability.

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