
Siemens Industrial Controls 3RU2126-1GB0 Relay
The Siemens 3RU2126-1GB0 thermal overload relay is a critical protection component for S0 size contactors, specifically designed for current-dependent protection of loads with normal starting conditions. Operating within a 4.5 to 6.3 Amp setting range, this SIRIUS terminal-mounted relay provides reliable monitoring of phase failure and load imbalance. Engineered with Class 10 tripping characteristics, it ensures the security of three-phase motors against excessive temperature rise according to IEC 60947-4-1. The unit features built-in manual and automatic reset options, a dedicated switch position indicator, and a TEST function for verifying auxiliary contact performance. This bimetallic overload relay integrates seamlessly into S0 control circuits, offering a compact footprint and screw-type terminals for DIN rail mounting or direct attachment to 3RT202 contactors, making it a standard choice for industrial motor starter assemblies.
Technical Specifications & Benefits
- System Compatibility: Optimized for use with SIRIUS 3RT2 contactors, size S0.
- Adjustable Trip Current: Precise 4.5-6.3A current setting range to match specific motor nameplate data.
- Phase Monitoring: Integrated phase failure sensitivity protects against single-phasing conditions.
- Control Interface: Equipped with 1 NO + 1 NC auxiliary contacts for fault signaling and motor disconnection.
- Environmental Resilience: Features temperature compensation from -40°C to +70°C, maintaining trip accuracy in fluctuating cabinet environments.
Common Installation Questions
What is the maximum voltage rating for the auxiliary contacts on the 3RU2126-1GB0?
The auxiliary contacts are rated for an operational voltage of 690V, suitable for standard industrial control logic and signaling circuits.
Can this relay be mounted independently or only on a contactor?
While designed for direct mounting to S0 contactors, it can be installed as a standalone unit on a 35mm DIN rail using a 3RU2926-3AA01 stand-alone installation support.
Does this unit support reset automation?
Yes, the 3RU2126-1GB0 features a selector switch that allows technicians to toggle between Manual and Automatic reset modes depending on the application safety protocol.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Industrial Controls 3RU2126-1GB0 Relay
The Siemens 3RU2126-1GB0 thermal overload relay is a critical protection component for S0 size contactors, specifically designed for current-dependent protection of loads with normal starting conditions. Operating within a 4.5 to 6.3 Amp setting range, this SIRIUS terminal-mounted relay provides reliable monitoring of phase failure and load imbalance. Engineered with Class 10 tripping characteristics, it ensures the security of three-phase motors against excessive temperature rise according to IEC 60947-4-1. The unit features built-in manual and automatic reset options, a dedicated switch position indicator, and a TEST function for verifying auxiliary contact performance. This bimetallic overload relay integrates seamlessly into S0 control circuits, offering a compact footprint and screw-type terminals for DIN rail mounting or direct attachment to 3RT202 contactors, making it a standard choice for industrial motor starter assemblies.
Technical Specifications & Benefits
- System Compatibility: Optimized for use with SIRIUS 3RT2 contactors, size S0.
- Adjustable Trip Current: Precise 4.5-6.3A current setting range to match specific motor nameplate data.
- Phase Monitoring: Integrated phase failure sensitivity protects against single-phasing conditions.
- Control Interface: Equipped with 1 NO + 1 NC auxiliary contacts for fault signaling and motor disconnection.
- Environmental Resilience: Features temperature compensation from -40°C to +70°C, maintaining trip accuracy in fluctuating cabinet environments.
Common Installation Questions
What is the maximum voltage rating for the auxiliary contacts on the 3RU2126-1GB0?
The auxiliary contacts are rated for an operational voltage of 690V, suitable for standard industrial control logic and signaling circuits.
Can this relay be mounted independently or only on a contactor?
While designed for direct mounting to S0 contactors, it can be installed as a standalone unit on a 35mm DIN rail using a 3RU2926-3AA01 stand-alone installation support.
Does this unit support reset automation?
Yes, the 3RU2126-1GB0 features a selector switch that allows technicians to toggle between Manual and Automatic reset modes depending on the application safety protocol.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Shipping & Returns
Description
The Siemens 3RU2126-1GB0 thermal overload relay is a critical protection component for S0 size contactors, specifically designed for current-dependent protection of loads with normal starting conditions. Operating within a 4.5 to 6.3 Amp setting range, this SIRIUS terminal-mounted relay provides reliable monitoring of phase failure and load imbalance. Engineered with Class 10 tripping characteristics, it ensures the security of three-phase motors against excessive temperature rise according to IEC 60947-4-1. The unit features built-in manual and automatic reset options, a dedicated switch position indicator, and a TEST function for verifying auxiliary contact performance. This bimetallic overload relay integrates seamlessly into S0 control circuits, offering a compact footprint and screw-type terminals for DIN rail mounting or direct attachment to 3RT202 contactors, making it a standard choice for industrial motor starter assemblies.
Technical Specifications & Benefits
- System Compatibility: Optimized for use with SIRIUS 3RT2 contactors, size S0.
- Adjustable Trip Current: Precise 4.5-6.3A current setting range to match specific motor nameplate data.
- Phase Monitoring: Integrated phase failure sensitivity protects against single-phasing conditions.
- Control Interface: Equipped with 1 NO + 1 NC auxiliary contacts for fault signaling and motor disconnection.
- Environmental Resilience: Features temperature compensation from -40°C to +70°C, maintaining trip accuracy in fluctuating cabinet environments.
Common Installation Questions
What is the maximum voltage rating for the auxiliary contacts on the 3RU2126-1GB0?
The auxiliary contacts are rated for an operational voltage of 690V, suitable for standard industrial control logic and signaling circuits.
Can this relay be mounted independently or only on a contactor?
While designed for direct mounting to S0 contactors, it can be installed as a standalone unit on a 35mm DIN rail using a 3RU2926-3AA01 stand-alone installation support.
Does this unit support reset automation?
Yes, the 3RU2126-1GB0 features a selector switch that allows technicians to toggle between Manual and Automatic reset modes depending on the application safety protocol.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












