Siemens 3RB30262SB0 Solid State Overload Relay Class 20

Product Description

The SIEMENS 3RB30262SB0 is a solid state overload relay rated for Class 20 trip response, designed to protect three-phase motors from overload and phase-failure conditions. Unlike traditional bimetallic relays, solid state overload relays use electronic sensing to deliver precise, repeatable trip performance across a wide current range. This relay is typically installed in motor control centers, combination starters, and standalone contactor assemblies. Electricians and industrial controls technicians are the primary installers. The unit weighs 0.474 pounds and measures 4.528 inches by 3.858 inches by 2.205 inches, making it compact enough for panel-mount applications with limited enclosure depth.

The 3RB30262SB0 is suited for industrial and commercial motor protection applications where accurate overload response and electronic trip reliability are required. Class 20 trip class means the relay will trip within 20 seconds at 7.2 times the set current, which is appropriate for motors with higher inertia loads such as fans, pumps, and compressors. This relay fits into motor starter assemblies where solid state protection is specified over electromechanical alternatives.

Key Features

• Solid state overload protection for three-phase motor applications
• Class 20 trip class for high-inertia load compatibility
• Electronic sensing provides repeatable, accurate trip response
• Compact form factor at 4.528 x 3.858 x 2.205 inches
• Lightweight construction at 0.474 pounds for easy panel integration

Compatibility

Designed as an OEM-style solid state overload relay for use in three-phase motor starter and contactor assemblies where Class 20 electronic overload protection is required.

Installation Notes

Installation should be performed by a licensed electrician or qualified controls technician in accordance with NEC Article 430 governing motor branch circuit and overload protection. Disconnect and lock out all power to the motor control assembly before removing or installing the relay. Verify that the current setting is properly adjusted to match the motor full-load amperage rating after installation. Do not energize the circuit until all wiring connections are confirmed secure and the enclosure is properly closed.

Technical Specifications

• Trip Class: Class 20
• Relay Type: Solid State
• Length: 4.528 inches
• Width: 3.858 inches
• Height: 2.205 inches
• Weight: 0.474 pounds
• UPC: 66264390304

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RB30262SB0