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Siemens 3RU2116-1BB0 Thermal Overload Relay - 1.4-2.0A

Siemens 3RU2116-1BB0 Thermal Overload Relay for motor protection.

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ManufacturerSiemens

Part number3RU2116-1BB0

Type Thermal Overload Relay

Manufacturer Siemens

Series SIRIUS 3RU21

Part Number 3RU2116-1BB0

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Thermal Overload Protection Motor Protection Contactor Mountable Screw Terminals Manual/Automatic Reset Class 10 Trip Class

Product description

The Siemens 3RU2116-1BB0 is a thermal overload relay designed for robust motor protection, with an adjustable current range from 1.4 to 2.0 A. It features Class 10 tripping characteristics and is intended for direct mounting onto compatible Siemens contactors. This model uses screw terminals for both the main power circuit and auxiliary control connections, and provides manual or automatic reset options.

This overload relay is critical for safeguarding motors in demanding industrial applications, including heavy machinery, processing equipment, and material handling systems. It effectively prevents damage from sustained overcurrents and phase imbalances, contributing to operational reliability and extended equipment life.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RU2116-1BB0. We are committed to providing quality components and exceptional service to meet your automation needs.

Technical specifications

Type	Thermal Overload Relay
Manufacturer	Siemens
Series	SIRIUS 3RU21
Part Number	3RU2116-1BB0
Current Range	1.4-2.0 A
Size	S00
Trip Class	Class 10
Mounting	Contactor Mounting
Reset	Manual/Automatic
Main Circuit Terminals	Screw
Auxiliary Circuit Terminals	Screw

Common applications

Motor Control

Pump Control

Conveyor Systems

HVAC Equipment

Industrial Machinery

Manufacturing Automation

Compatible systems

Siemens 3RT Contactors

Also known as

Siemens 3RU21161BB0 SIRIUS 3RU21 Overload Relay Siemens Motor Protection Relay

Replaces / compatible with

Replaces older Siemens overload relays with similar current ratings and mounting specifications. Compatible with Siemens 3RT contactors.

Technical note

Expert tip

For optimal performance, ensure the relay is mounted within the specified proximity to the associated Siemens contactor to prevent excessive heat buildup.

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Frequently asked questions

What is the appropriate motor size for the Siemens 3RU2116-1BB0 overload relay?

The Siemens 3RU2116-1BB0 overload relay is adjustable from 1.4 to 2.0 A. It is suitable for motors with full load current ratings within this range, ensuring accurate thermal protection. Always refer to motor nameplate data for precise sizing.