Siemens 3RU21160AB0 Overload Relay Class 10

Product Description

The SIEMENS 3RU21160AB0 is a Class 10 thermal overload relay designed to protect motors and associated electrical equipment from damage caused by overcurrent and overload conditions. This relay monitors current draw in three-phase motor circuits and trips the circuit when sustained overload is detected, helping prevent motor burnout. It is a compact, panel-mount device installed by licensed electricians and industrial controls technicians in motor control centers, control panels, and starter assemblies. The Class 10 trip characteristic means the relay responds within 10 seconds at 7.2 times the set current, making it suited for standard motor load applications.

The 3RU21160AB0 is intended for use in industrial and commercial motor protection applications. It is typically paired with a compatible contactor in a direct-on-line or reversing motor starter configuration. Common installation environments include manufacturing facilities, HVAC mechanical rooms, pump control panels, and conveyor systems where reliable motor protection is required. This relay is a direct-mount style unit suited for DIN-rail or contactor-mounted assembly.

Key Features

• Class 10 trip characteristic for standard motor overload protection
• Compact form factor fits within motor control center and starter enclosures
• Thermal overload sensing protects against sustained overcurrent conditions
• Direct-mount design for integration with compatible contactor assemblies
• Lightweight construction at 0.331 pounds for easy panel installation

Compatibility

Designed as an OEM-style overload relay for use in industrial motor starter and control panel assemblies requiring Class 10 overload protection. Consult the equipment wiring diagram and SIEMENS product documentation to confirm contactor compatibility before installation.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the panel or motor control center before installing or replacing the relay. Verify that the relay current setting matches the full-load amperage rating of the motor being protected. Do not energize the circuit until all connections are confirmed secure and the enclosure is properly closed.

Technical Specifications

• Trip Class: Class 10
• Dimensions (L x W x H): 4.016 inches x 1.929 inches x 3.307 inches
• Weight: 0.331 pounds
• Quantity per Pack: 1
• UPC: 66264392124

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RU21160AB0